What it's like to be a network engineer...translated into normal people speak

User: I think we are having a major road issue.

Me: What? No, I just checked, the roads are fine. I was actually just on the roads.

User: No, I’m pretty sure the roads are down because I’m not getting pizzas.

Me: Everything else on the roads is fine. What do you mean you aren’t getting pizzas?

User: I used to get pizzas when I ordered them, now I’m not getting them. It has to be a road issue.

Me: As I said, the roads are fine. Where are you getting pizzas from?

User: I’m not really sure. Can you check all places that deliver pizzas?

Me: No I don’t even know all the places that deliver pizza. You need to narrow it down.

User: I think it is Subway.

Me: Okay, I’ll check…No, I just looked and Subway doesn't deliver pizzas.

User: I’m pretty sure it is Subway. Can you just allow all food from Subway and we can see if pizza shows up?

Me: Sigh, fine I’ve allowed all food from Subway, but I don’t think that is the issue.

User: Yeah I’m still not getting pizza. Can you check the roads?

Me: It’s not the roads, the roads are fine. I’m pretty sure Subway isn’t the place.

User: Okay, I found it. It’s Papa Johns.

Me: Okay, I looked and Papa Johns does deliver pizza. Is it the local Papa Johns or one in a different town?

User: I don’t know. Can you allow pizza from all Papa Johns to me?

Me: No I can’t do that. Can you get me an address for Papa Johns?

User: No, I only know it as Papa Johns. Can you get me all the addresses of all Papa Johns and I’ll tell you if one of them is correct?

Me: No, I don’t have time for that. Okay, I looked at the local one and it looks like they have sent you pizza in the past and they are currently allowed to send you pizzas. Try ordering a pizza while I watch.

User: Yeah still no pizza. I’m guessing they are getting blocked at the freeway. Can you check the freeway to make sure they can get through?

Me: No, this is a local delivery. They aren't even using the freeway.

User: Okay, well then it has to be a road issue.

Me: No, the roads are fine. Okay, I just drove from the Papa Johns to the address they have on file for you and there is nothing there.

User: Hmm, wait we did move recently.

Me: Did you give your new address to Papa Johns?

User: No, I just thought they would be able to look me up by name.

Me: No they need your new address. What’s your new address?

User: I’m not really sure. Can you look it up?

Me: Sigh, give me a second…Okay, I found your address and gave it to Papa Johns. Try ordering a pizza now.

User: HEY! PIZZA JUST SHOWED UP!

Me: Okay, good.

User: (To everyone else they know) I apologize for the delay in the pizza but there was a major road issue that was preventing the pizza from getting to me. The network engineer has fixed the roads and we are able to get pizza again.

Me: But it wasn’t the roads…whatever.

User: Oh, can you also check on an issue where Chinese food isn’t getting to me? I think it may be a road issue

using my local provider

Best DHCP server ever.

Network joke

Completed!!!
Now I'm waiting for the printed copies.
My first book. I still can't believe it.

be like a neural network

The feeling you get when you've accepted a job offer and then discover this

On Slack
Me: I can't access the VPN
Network team: You have to create a user incident
My browser: 403
Network team: Yeah you need to be on the VPN to access the incident system
Me: 😐

IP Man == Network administrator

Spiderman as Network Admin

You won’t get it. But I don't care.... :)

how email really works

My life right now

Find the difference...

Find it...

So we were doing Computer Network revision.

our teacher asks,' what is another method except GUI to send mail?'

I know it is using terminal.
'Terminal' I replied.
'No, it was something else'
'Console'
'No, not that'
.
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.
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'Command line?'
'Yes, that's it. That's what I m talking about'

FML!

100% network engineer

Red Sox: Super secure.

This is why I remember the network's levels

When 500 ms have passed and you have not yet received the ACK

#10yearchallenge

There are some interesting MAC addresses in my area.

My Neural Network can recognise handwritten digits!!!

It's my second try at NN so it's faaaar from perfect (or maybe even good), but hey, it's something and only with High schools, I'm pretty satisfied with the results. If you've not seen my previous post, I'm just trying to learn NNs in C and am doing just really basic things.
Still I'm proud of my progress!

Now I'm looking forward learning some library (OpenNN + OpenCV seems cool) and trying more advanced stuff, wish me luck 😆

My friend Bob : "Hey meet my girlfriend Alice"
Me : "I always knew about you two"

I just wanted to show off my battle station.
I figured that some would appreciate it. :)

Ubisoft's emergency procedures...

!!!rant
Actually happened to me , once.

User Ip Address is too long (maximum is 30 characters).

Okay, dear third-party API, I guess users with IPv6 don't deserve the service... And wtf is 30-char limit for an IP address, when IPv4 can be only 15 characters long, and IPv6 can be up to 39 characters? Did you calculate a weighted average of IP length to get that number?

Pi-hole is the best thing to ever be added to my home network.

Skype has a mean auto reply. If the auto reply is based on a neural net, then they must be sampling from bullies.

Get the batteries!!!

Source : reddit

I would like to tell you a UDP joke, but you might not get it..

So, continuing the story, in reverse order, on the warship and its domain setup...
One day, the CO told me that we needed to set up a proper "network". Until now, the "network" was just an old Telcom switch, and an online HDD. No DHCP, no nothing. The computers dropped to the default 169.254.0.0/16 link local block of addresses, the HDD was open to all, cute stuff. I do some research and present to him a few options. To start things off, and to show them that a proper setup is better and more functional, I set up a linux server on one old PC.
The CO is reluctant to approve of the money needed (as I have written before, budget constraints in the military is the stuff of nightmares, people there expect proper setups with two toothpicks and a rubber band). So, I employ the very principles I learned from the holy book Bastard Operator From Hell: terrorizing with intimidating-looking things. I show him the linux server, green letters over black font, ngrep -x running (it spooks many people to be shown that). After some techno-babble I got approval for a proper rack server and new PCs. Then came the hard part: convincing him to ditch the old Telcom switch in favour of a new CISCO Catalyst one.
Three hours of non-stop barrage. Long papers of NATO specifications on security standards. Subliminal threats on security compromises. God, I never knew I would have to stoop so low. How little did I know that after that...
Came the horrors of user support.
Moral of the story: an old greek saying says "even a saint needs terrorizing". Keep that in mind.

Social network preferences:
1. devRant
2. Hashnode
3. dev.to
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6. Telegram
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14. Google+
15. Twitter
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27. Mastodon
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136. WhatsApp
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// 500 feet of crap
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574774367. Facebook

Weak signal at the garden? No problem

"There is a network loop"

Friend: Hey did you saw this neural network which can solve captchas?
Me: No, does that even exist?
Friend: Yes, its awesome, isn't it?
Me: Yeah, awesome...
Inner Me: Now machines are already better at solving captchas than me :/

The stupid stories of how I was able to break my schools network just to get better internet, as well as more ridiculous fun. XD

1st year:
It was my freshman year in college. The internet sucked really, really, really badly! Too many people were clearly using it. I had to find another way to remedy this. Upon some further research through Google I found out that one can in fact turn their computer into a router. Now what’s interesting about this network is that it only works with computers by downloading the necessary software that this network provides for you. Some weird software that actually looks through your computer and makes sure it’s ok to be added to the network. Unfortunately, routers can’t download and install that software, thus no internet… but a PC that can be changed into a router itself is a different story. I found that I can download the software check the PC and then turn on my Router feature. Viola, personal fast internet connected directly into the wall. No more sharing a single shitty router!

2nd year:
This was about the year when bitcoin mining was becoming a thing, and everyone was in on it. My shitty computer couldn’t possibly pull off mining for bitcoins. I needed something faster. How I found out that I could use my schools servers was merely an accident.
I had been installing the software on every possible PC I owned, but alas all my PC’s were just not fast enough. I decided to try it on the RDS server. It worked; the command window was pumping out coins! What I came to find out was that the RDS server had 36 cores. This thing was a beast! And it made sense that it could actually pull off mining for bitcoins. A couple nights later I signed in remotely to the RDS server. I created a macro that would continuously move my mouse around in the Remote desktop screen to keep my session alive at all times, and then I’d start my bitcoin mining operation. The following morning I wake up and my session was gone. How sad I thought. I quickly try to remote back in to see what I had collected. “Error, could not connect”. Weird… this usually never happens, maybe I did the remoting wrong. I went to my schools website to do some research on my remoting problem. It was down. In fact, everything was down… I come to find out that I had accidentally shut down the schools network because of my mining operation. I wasn’t found out, but I haven’t done any mining since then.

3rd year:
As an engineering student I found out that all engineering students get access to the school’s VPN. Cool, it is technically used to get around some wonky issues with remoting into the RDS servers. What I come to find out, after messing around with it frequently, is that I can actually use the VPN against the screwed up security on the network. Remember, how I told you that a program has to be downloaded and then one can be accepted into the network? Well, I was able to bypass all of that, simply by using the school’s VPN against itself… How dense does one have to be to not have patched that one?

4th year:
It was another programming day, and I needed access to my phones memory. Using some specially made apps I could easily connect to my phone from my computer and continue my work. But what I found out was that I could in fact travel around in the network. I discovered that I can, in fact, access my phone through the network from anywhere. What resulted was the discovery that the network scales the entirety of the school. I discovered that if I left my phone down in the engineering building and then went north to the biology building, I could still continue to access it. This seems like a very fatal flaw. My idea is to hook up a webcam to a robot and remotely controlling it from the RDS servers and having this little robot go to my classes for me.

What crazy shit have you done at your University?

me: do you know what is so great about UDP jokes?
you: No
me: the fact that i don't care if you got them.

This is very usual with AWS

I JUST FINISHED MY FIRST NEURAL NETWORK!!!

But first of all, as I know you guys, it's spaghetti code and even I as a newb see places where I used too few-dimensional array or passed useless parameters or simply wrote too many redundant lines of code. I know it. I will make it MUCH better next time. Period.

But OMFG this made me scream from happiness today!! Just these few seemingly random numbers... I'm really done.. That's why I jumped into coding year or two ago..

And for some background, I didn't study any IT school, I'm just highschooler (general grammar school) who traded gaming for learning. Also my maths teacher teached NNs on university and is very keen to teach me, so that's that.

Now I wanna make the best out of it and I'm looking forward to write some well documented and flexible library, parallelized and everything (I'm gonna learn a lot in the process of doing this) better then FANN.

Maybe I'm gonna fail(99% probability but hey, I'm programmer beginner, I still think I can code everything I want). But if there is just one moment like when I saw this screen today, I'mma trade my life for it.

Sorry for taking your time guys, I was just genuinely stunned... A lot

My friend just send me this...and i think you guys must watch this two movies.. Comment. Who will win??

Valve:
*makes good games*
*gets fame and money*
*sells other peoples games*
*announcing future games*
*stops making games*
*sells virtual items for a ridiculous high price*
*get sued for gambling in their games*
---
*getting criticized for not making games*
*people hope*
*devs and writers for their popular games leave*
*people loose hope*
---
*valve experimenting with VR*
*not making games for over 10 years*
*still calling themselves a game developer*
---
*valve buys successful indie game developer*
*valve claims they're making games again*

Oh my god...

My friend typed "hack" into a .bat file on our school network and got an after-school detention and his account disabled for like a week because he simply had the intention of trying to hack the network....

Lord forgive me for laughing too hard at this person/situation... I kid you NOT!

So today while everything was going well, we suddenly had network issues at work. We worked to get everything back up online asap and then sent out an email for those affected to either restart their machines or refresh their desktops but we recommend restarting... After some few client calls, this special call came in..

Riiing, riiiiiing, ring....
Me: hi, how can help you?

Client: *laughing.. This is probably a stupid question but I forgot how to "refresh" my desk top..the thing is, I have Febreeze but I don't think that's for desk tops.

Me: Wait, what? 🤔 Febreeze for what?😕

Client: You guys sent an email to refresh our desk tops and I said I have Febreeze so how will that get my things in the computer back to show again?

Me: Ohhh, no no. We meant your computer desktop. You don't need Febreeze. Right click anywhere on your computer in the screen and select refresh from the pop up menu. We meant your computer "desktop" not your actual "desk top".

Client: *starts laughing...I told you it was a stupid question

Me: don't worry.. It wasn't stupid.

After I hang up, some of my team members asked me why someone is asking about Febreeze...I told them and they all started laughing hysterically

I was still trying to digest the conversation I had just have on the phone. 😂😂😂

Working on cool (and last) school project before starting my internship !

Can you fix this?

--- UK Mobile carrier O2's data network vanishes like a fart in the wind ---
One of the largest mobile carriers in the UK; O2 has been having all manner of weird and wonderful problems this morning as bleary eyed susbcribers awoke to find their data services unavailable. What makes this particular outage interesting (more so than the annoyingly frequent wobblers some mobile masts have) is that the majority of the UK seems to be affected.

To further compound the hilarity/disaster (depending on which side of the fence you're on), Many smaller independent carriers such as GiffGaff and Tesco Mobile piggy-back off O2's network, meaning they're up the stinky creek without a paddle as well. Formal advice from the gaseous carrier is to reboot your device frequently to force a reconnect attempt, Which we're absolutely sure won't cause any issues at all with millions of devices screaming at the same network when it comes back up.

Issue reports began flooding DownDetector at around 5am (GMT), With PR minions formally acknowledging the issue 2 hours later at 7am (GMT) via the most official channel available - Twitter. After a few recent updates via the grapevine (companies involved seems to be keeping their heads down at the minute) Ericsson has been fingered for pushing out a wonky software update but there's been no official confirmation of this, so pitchforks away please folks.

If you're in need of a giggle while you wait for your 4G goodness to return, You can always hop on an open WiFi network and read the tales of distress the data-less masses are screaming into the void.

pear to pear Network for dummies

The link between one of the server units and our router has been disconnected and the sales dept. has gone completely offline,

Just because of this piece of crap:

Customer: CSS is not loading on [specific phone model & browser], here's a screenshot

My office has blocked access to all external websites. Only internal, self-hosted sites under our domain work.

P E A K. S E C U R I T Y.

Uninstalled Whatsapp
Uninstalled Facebook
Uninstalled Instagram
Uninstalled Twitter

Don't use Snapchat

Didn't uninstall DevRant😁

Coz it is resourceful and fruitful conversations are not worth to be missed even during exam time!

Exams got me like this 😣

Btw Which social apps do you use on daily basis ? Just curious to know 😅

Machine learning is super hard and frustrating. I have no idea where to start 😓

I’m so happy right now, I love doing this. Now just gotta wait for the 10Gbit switch so I can start working on the 150TB storage server solution

2 things arrived in the mail today, still not my serial cable though. How fucking stressful, what am I gonna do!?

This happened sometime back..

A guy came to our university with a social network that he created. It was for students and professors to interact, to form study groups and earn points as they mark done topic as "studied". He made a deal with our university, so everyone was forced to sign up for this.

While he was giving a demo of the website, me and my friend started ranting.

"This website is shit. Why are we forced to use this?"

"This UI looks just like LinkedIn"

"This top bar is right out of bootstrap"

"I have seen that graph in one of the libraries. He didn't even change the defaults."

Another friend who was sitting besides us was hearing all this.

"I don't understand a word you guys are talking. It is too high level for me"

We replied, "Don't worry. We will talk in low level. 00101110010101..."

Today I'm trying to study how to encode data in idx-ubyte format for my machine learning project.
Professors I'm going to astonish you!

Good day and good coding to all of you! :)

It pisses me off that germany has no proper mobile reception fucking anywhere near rural areas.
And don't get me started on railway lines.

Also Telekom is just garbage.
We pay full price and get less than half of the data we're paying for.

Fucking hell rant over.

Over the counter network operations

Boss calls: "Can you give me more bandwith?"
Me: "I can, but the other coworkers will have issues"
Boss: "Doesn't matter, and please, lift up the proxy too"
Me: "I am sorry, but I can't, that could compromise our security"
Boss: "I am giving you an order..."
Me: "Ok then..."
Me: *proceeds to give boss more bandwith and lifts up proxy (all is lost now)*

I go to see what is the boss doing with the bandwith...he was downloading League of Legends in his personal notebook...

TL;DR: Boss asks to put company at risk for the sake of a game...

Home is where...

... was in the detectify newsletter today, thought you may find this as funny as I do 😅

Didn't think this was necessary!

Boss: We have a company doing deep learning coming by. Go learn about it so we can understand what their talking about.
Me: Ok.
Me 6 hours later: ...help.

"PLEASE COME QUICKLY OUR INTERNAL NETWORK IS FUCKED!
-Uh, mam', could you describe the problem?"
Spent an hour, trying to fix this "network issue". Basic level 1 and 2 support. Can't connect using RDP on the server. No teamviewer either. Unplug, replug everything. Restart the server, the router, the switches. I knew that it was something dumb. I spent 3h on the highway.
To find.
That the fucking.
Ethernet cable.
Was plugged oN THE MOTHER FUCKING ILO PORT! FUCK HP, FUCK THIS, FUCK ME BECAUSE I SHOULD'VE ASKED FOR A PHOTO.

"It's fixed, mam'. Did you touch something when it was working?
-Uh, no, I swear. Also, could you please take a look at our printer? It's not working. It was out of ink so I changed the cartridge yesterday, but today it's not working!"

The cartridge was not inserted correctly.

Then she nicely made me a coffee, thanking me for the fix and asking what the problems were.

Just kidding.

Joke or... :D

I just watched The Social Network and I'm so depressed that I'm through quarter of my life and haven't done anything significant yet.....😭😭

Probably built by network engineer 🙄

Neural network for playing Tetris.

I've created an AI!!!!
Code:
switch msg:
case "Hi": return "Hello";
case "What's the weather": return "Weather is great";
case "Are you an AI?": return "Yes, I'm highly intelligent"

A neural network?

It took 2 fucking days for the network team to assign permission to my username to access 2 x dedicated servers on the network.

Like dude WTF, it's a 5 (max) minute job. I'm not judging just saying.

Internet is fluctuating in our office.
The network team sent out an email of unscheduled outage.
I thought of replying back,
"Have you tried turning it off and on again".

!dev

The school I went to didn't have PCs when I first joined (had some RISC OS machines instead). They got Windows 95 PCs eventually and networked them. I had no experience with networking before this, but had a PC at home. We all had mapped drives to resources on the server. The PCs were pretty locked down - no "Run" command etc.

Anyway, one day the head of IT came in to one of the lessons and asked me "how I did it".

What had I done? Well, clearly he had seen something I'd taught one of my friends. I wrote it down for him.

1. Right-click the desktop
2. New shortcut
3. \\nameofserver
4. OK

Such hax, being able to see the file shares on the server.

Shortly after this, all computer areas had signs saying "no shortcuts allowed"...

Managed to make myself look like a fucking moron again today...

Can't mount NFS share, get "permission denied". Huh, that's weird... It's correctly exported.

Well it's correctly exported and rpcinfo -p $HOST times out... Must be firewall rule.

Firewall rule is changed but still no joy "permission denied"... Fuck sake networks, can't you do anything right first time?!!!

Firewall rule is correct I am reliably informed... Go about proving that it's not fucking correct and provide "evidence" to show this, I was a little bit more blunt than was strictly required.

Networks say they will take another look.

I turn NFS logging to verbose for my own interest and notice the line "path/to/directory is not a valid directory".

I, as a moron, had missed a "/" at the start of the path. That's why I still couldn't mount after the firewall change.

Go over and apologise in person and explain how I'm a total idiot.

Uuuh.... I don't...
Uuuuuhh...

Since I already posted images of my desktop setups at work(Mac) and home(Linux), I didn't want to repost this week. So, to keep it at least mildly interesting, here's a shot of my garage networking setup.

Pictured:
Ubiquiti Edgerouter-L
Ubiquiti UAP-AC Lite
Drobo 5N
TP-Link cable modem
A big UPS, so we'll still have wifi during a power outage, since that's apparently important
A couple of older machines I'm working on when I have time
A Philips Hue Bridge
An unremarkable 7-port switch
An Ooma phone device
A shitload of my wife's stuff that she's left there on her way in and out of the house.

*takes Raspberry Pi*
*creates private Wi-Fi network"
*hides it in pencil case*
*brings it to school*
*chats with friends on network*

HACKING 9000

Well, I just learned how much of a pain it is to learn the math for learning neural networks. I really should have paid more attention in high school.

I will learn, the hard way I guess...

Internet down.. no problem, i will play dinasour game in chrome 😎😎

Neural Network Stones
Credits: Mritunjay

devRant is the new Facebook+reddit+Tumblr and more! Finally, a crowd that gets me. :') <3

Network cable...

After moving, I don't have DSL yet so I have to use mobile data to get internet access. Additionally I had to finish a freelancing job. In Germany you have one of the most expensive and least reliable mobile networks in europe.

I had to upload my develpoed software to a remote server

So I suddenly was sent back in time. A single call would have disrupted the download (I can't use internet and phone at the same time, might be a phone issue). While my phone has "high speed" volume left and showed at least HSPA, but I still, the upload rate was prehistoric:

Right, I've been here before.
Our app requires an internet connection, and one of our clients wants to roll it out on a strictly managed network.
We told them which addresses our app communicates with and their network team opened them up for traffic. Should work, right?
Nope, doesn't work.

So I request them to use Fiddler to do some debugging of the network traffic, and lo and behold, it does work when Fiddler is active.
One important detail is that Fiddler uses it's own SSL certificate to debug HTTPS communications. I've had moments where expired certificates were the cause of things not working and running Fiddler "fixes" this because of their own certificate.

So I point this out in numerous mails to their network team, every time I get a response saying "nah, that can't be it".
I keep insisting "I have had this before, please check if any installed Root CA Certificates is expired"
At this point I'm certain they have updates turned off on these machines, and their certificates must not have been updated for a long time.

At one point they come back to me. "Hey, when Fiddler is off, WireShark shows the app communicating with ICMP calls, but when it's on it shows HTTP calls instead".

...YOU'RE THE SUPPOSED NETWORK EXPERTS?! You think data can be send via ICMP? Do you even know what ICMP is? Of course you'll see ICMP calls when the network is rejecting the packages instead of HTTP calls when everything's fine.
(ICMP is used to communicate errors)

I'm trying to keep my patience with these guys until they find exactly what's wrong because even I am somewhat grasping at straws right now. But things like this makes me doubt their expertise...

So I just finished a prototyp for my thesis. Still need to segment the real data myself and collect some statistics stuff to write about the network, but I am pretty proud of the result considering the dataset is very small.

For now I need some god damn sleep.

How can people use git like that ?
Paris' metro has a simpler network.
If you can stop yourself from all working on the same branch at least do `pull --rebase`.

Oh look. The monitoring channel is in flames, smartphone is vibrating so hard it's having a seizure.

Hm. Nah it's fine. Not my...

Damn it. Incoming call. -.-

I'm actually on vacation (more like you need to trim down overtime before management get's angry).

They decided to test the new hardware / os stack I set up in the last weeks. I'd actually be happy about it If I wasn't on vacation and would be part in something that I invested a lot of time...

Well now I am. Guess what. It's running too good.

And that's not a joke. It's partly due to an upgrade in infrastructure (got rid of some last remaining 1 Gbps networks)… but also because I changed quite a lot on the OS / VM side plus we changed from XEN to Proxmox... With major tweaks, too.

The whole stack can now handle peak traffic where it would choke before, and even go beyond the old peak traffic.

Enough of introduction, the simple reason why shit burned down was because they tried out the current development branch and let it ran.

The development branch had an currently unfinished ratelimiter framework, since I didn't had time for an full burn in and didn't knew what the maxima / limits were. And since I hadn't finished that, I didn't finish the traffic shaping either.

Hm. Guess it's not good when you let a bunch of heavy parallelized data generators / analyzers run for free....

In the end, we simply shotgunned the docker development machines, because thanks to network congestion / retransmissions and feedback, they were not really cooperative via network / REST.

But hey: To infinity and beyond. XD

When you forget to normalize or standardize your data.

A nice side effect of running a neural network on my home server is that I no longer need a white noise machine

My shitty neural network doesn't want to learn.

Wondering if the problem is in my implementation of the backpropagation, or in the fucking hyperparameters.

Stupid network go fuck yourself and suck my neuron.

Hello everyone,
I'm new here. [OK. Let's skip this]
I want to know where to begin on my journey on learning how to create a program that predicts what a user will say next by storing already said things and by making specific characteristics for the users.

I know that I will need to train it with some data first lol.
But how will it do the prediction. I just need this part of understanding.

I'm sorry for my bad English btw.

This is the best Github history I have ever seen.

Building my own router was a great idea. It solved almost all of my problems.

Almost.

Just recently have I started to build a GL CI pipeline for my project. >100 jobs for each commit - quite a bundle. Naturally, I have used up all my free runners' time after a few commits, so I had to build myself a runner. "My old i7 should do well" - I thought to myself and deployed the GL runner on my local k8s cluster.

And my router is my k8s master.

And this is the ping to my router (via wifi) every time after I push to GL :)

DAMN IT!

P.S. at least I have Noctua all over that PC - I can't hear a sound out of it while all the CPUs are at 100%

I remember the days when the work internet was faster than your home internet.

I love this Google's Colab feature, when I saw it, I just laughed for no reason!
A button to the answer :)

Good day today, my birthday and I passed the network examination!

I was programming a basic neural network in Python and was getting the same error message again.Then after 2 hours of frustration I realized that I was using Python 2.7 instead of 3.6

How do l keep my MOUSE from making the whole NETWORK go DOWN ?

#C0MM1T

the power of the network😈😈

All of those books in my wishlist, but no money 😢😭

Network Security at it's best at my school.
So firstly our school has only one wifi AP in the whole building and you can only access Internet from there or their PCs which have just like the AP restricted internet with mc afee Webgateway even though they didn't even restrict shuting down computers remotely with shutdown -i.
The next stupid thing is cmd is disabled but powershell isn't and you can execute cmd commands with batch files.
But back to internet access: the proxy with Mcafee is permanently added in these PCs and you don't havs admin rights to change them.
Although this can be bypassed by basically everone because everyone knows one or two teacher accounts, its still restricted right.
So I thought I could try to get around. My first first few tries failed until I found out that they apparently have a mac adress wthitelist for their lan.
Then I just copied a mac adress of one of their ARM terminals pc and set up a raspberry pi with a mac change at startup.
Finally I got an Ip with normal DHCP and internet but port 80 was blocked in contrast to others like 443. So I set up an tcp openvpn server on port 443 elsewhere on a server to mimic ssl traffic.
Then I set up my raspberry pi to change mac, connect to this vpn at startup and provide a wifi ap with an own ip address range and internet over vpn.
As a little extra feature I also added a script for it to act as Spotify connect speaker.
So basically I now have a raspberry pi which I can plugin into power and Ethernet and an aux cable of the always-on-speakers in every room.
My own portable 10mbit/s unrestricted AP with spotify connect speaker.
Last but not least I learnt very many things about networks, vpns and so on while exploiting my schools security as a 16 year old.

Is this what's called a firewall?

my mind in the last days

!rant, but... It’s really nice to live in a country with decent LTE speeds... ;) It’s nice addition to my home 250Mbit DOCSIS connection...

So my new toys just arrived in the mail today :) Time for an overhaul of the home network!

What if we fed all rants and comments on devRant to a neural network trained to write rants and comments on others?

Microsoft servers just right now were the first servers giving me the full speed my connection can bear.

Downloading a Windows ISO in under a minute with a speed of up to 106MB per second, according to Firefox.

Microsoft, this is a first, but you gave me the biggest grin I had in a while.

Customer complains that the deployed desktop app is slow at site x.
I check it out with users at site x, and indeed, it does have a delay when trying to connect to a share on a server.
Checks with users at site y and z, no issues.
After a bit of digging, the resolve of a DNS record is most likely the culprit.
Send the ticket to the customer network team to investigate.
Get it back after an hour.

"We have pinged the DNS name, and it responds fine, there must be a bug in the application".

Oh and also, I wrote this rant at work, in my head, with a lot more cursewords involed.

So today's the day.

We've now successfully installed four Ubiquity AP's with a Ubiquity Security Gateway onto a 1000/1000 fiber line. Feels really nice when you're finished with the cable laying and everything just works™. Just getting the fiber in there was a project of its own, but now it's all complete. Tommorow I'll be working from home, and on Monday I guess I'll be bombarded with connectivity issues. Oh well, let's enjoy the weekend first 😁

It's been three weeks now that „SPRING“ is over and Nerdism won over our interior decorations. Neither wife nor friends and family noticed. But I do. Every morning. This time I made an impact to our decoration. This single time

Fuck! My brain just had a catastrophic forgetting!!

I can't remember the PIN of my Android phone that I'm using right now. Luckily, I'm still in because of my finger print but won't help is phone restarts.

Seems like your can't reset PIN without entering previous PIN.

Help!

Did anyone reach this black background? (score > 800)
Are there any more levels? I didn't try.

Boss: so let's get AWS in to ask their advise on the new architecture, but let's not bother involving the systems architect who actually knows what is going on.

OMFG network-manager randomizes the mac of wlan0. And it ignores me turning this "feature" off. WHAT THE HELL MAN

Now that most people at our company is working remotely at home, the worst thing is that everyone thinks I can somehow magically fix their home network..

First message of today :
"Hi, I'm X from the Y office. Do you remember that was you to set up our internal network two months ago? Ok, yesterday we called the elettrician to fix two wall plugs. Now our network is completely broken. Come to fix because we think you did something wrong."

I forced myself into some other jobs i had to do for about 2 hours. After that i grab the smartphone to answer.

Oh look, there is another message.

"Hi, always X from the Y office. We just restored the static IPs you setup after we've changed them early this morning. Now everything works again."

Oh really ?

Social network

Took dad's phone in hand to find out a contact number and realised that his phone has become quite slow to respond.
Asked him why is that and he didn't answer my question and said that he has got a message that Airtel is giving away free 4G Sims.
Bewildered, I asked him so what is that supposed to do with his phone being slow and he said, "If we take the 4G sim, then won't that make my phone faster? I have heard that 4G is fastest network".
And my reaction was like

Context: I (among other things) manage some servers for my students' club so I have first-hand information about anything network or server-related that happens. We basically run a big enterprise network and we allow devices to connect if a person has paid their membership and the device's MAC address (be it wireless or ethernet) is recognized by our switches/aruba controllers.

Story: So today a first complaint about "the wifi not working" came in because of Android 10 and its MAC randomization. We deal with MAC randomization on Windows laptops and PCs but I think it is disabled by default so we almost never get this type of complaint.
It took one of the other guys probably 5 minutes to figure out how to disable it... only to discover it is a per-network setting.

The actual question: If there are any network administrators here on devRant - how do you deal with this MAC filtering vs MAC randomization issue?

I genuinely didn’t think I’d ever get this.

My school blocks all UDP traffic going outside their network. 1 - 65535. Which in turn means that I had to switch to TCP for my VPN to connect. Now my VPN is slow as shit. -.-

Can someone explain me why Ubuntu 18.04 uses a new net plan administrator?

Tmw the setup CD for your new network switch only works on Windows XP...

the network at my job drops more than underwear at an orgy -.-

(variety of reasons, wifi is bad, and my vm hiccups the ethernet at least once a day)

luckily i move in a monthish

Too bad it's not a touchscreen. Would have been nice to play a bit.

Which is the most promising sector of Artificial Intelligence in future(2025) ?

I am currently studying about 'Machine learning'.

I'm reinventing the wheel by making yet another neural network library. It's not any good yet but I learn as I go along.

The only documentation that exists now is the admittedly quite comprehensive code comments. I'm it because Keras (using TensorFlow) requires a 3.5 compute ability rating for CUDA acceleration (which I don't have) and it doesn't support OpenCL. Eventually, I will make my implementation support both with varying levels of acceleration for different compute capabilities with the oldest supported being my hardware. If I ever get around to it.

I'd say wish me luck but determination would be infinitely more useful.

Saw this old post in my backup drive! Now that was a good one.

Took the day and rebuilt my home network with no major issues along the way.

Migrated to a new NAS and gave a Raspberry Pi a new life as a PiHole + DHCP.

Rant: Why can't things always go this smoothly on my projects? 😎

Today I'm picking up our new network gear for our new office. Exciting!

Who blocks "dell.com" for God's sake.
This is getting out of hands now >_<

Kubernetes is a breeze they said. Now I‘m sitting here for several hours trying to find out why my pods randomly fail to resolve domain names.

Coming along my adventure: broken systemd configs, systemd-resolved stub causing loops, broken k3s modules and finding out that busybox‘s nslookup is broken for versions greater than v1.28.4.

50 issues later, I figured out that the dude who setup the corporate network (where the machine in question is located) uses two nameservers: one to resolve the internal routes and one for all the external domains. Luckily, coredns randomly picks a nameserver for each request. Therefore, sometimes queries for external domains reach the nameserver dedicated to the internal network which then answers with NXDOMAIN.

I hate networking so so much...

New twist on an old favorite.

Background:
- TeamA provides a service internal to the company.
- That service is made accessible to a cloud environment, also has a requirement to be made available to machines on the local network so you can develop against it.
- Company is too cheap/stupid to get a s2s vpn to their cloud provider.
- Company also only hosts production in the cloud, so all other dev is done locally, or on production non-similar infra, local dev is podman.
- They accomplish service connectivity by use of an inordinately complicated edge gateway/router/firewall/message translator/ouija board/julienne fry maker, also controlled by said service team.

Scenario:
Me: "Hey, we're cool with signing requests using an x509 cert. That said, doing so requires different code than connecting to an unsecured endpoint. Please make this service accessible to developer machines and lower environments on the internal network so we can, you know, develop."
TeamA: "The service should be accessible to [cloud ip range]"
Me: "Yes, that's a production range. We need to be able to test the signing code without testing in production"
TeamA: "Can you mock the data?"
Me: "The code we are testing is relating to auth, not business logic"
TeamA: "What are you trying to do?"
Me: "We are trying to test the code that uses the x509 you provide to connect to the service"
TeamA: "Can you deploy to the cloud"
Me: "Again, no, the cloud is only production per policy, all lower environments are in the local data center"
TeamA: "can you try connecting to the gateway?"
Me: "Yes, we have, it's not accessible, it only has public DNS, and only allows [cloud ip range]"
TeamA: "it work when we try it"
Me: "Can you please supply repro steps so we can adjust our process"
TeamA: "Yes, log into the gateway and try issuing the call from there"
Me: (╯°□°)╯︵ ┻━┻

tl;dr: Works on my server

Soon to finish my CompSci degree and already have been invited to relatives for dinner... And IT-support...
(They had statically set their NAS to the same IP as the router and lost it)

I guess its time to prepare for the onslaught of screw-ups I'll be asked to fix.

F**king hate Windows for its insanely confusing proxy setup required for software development...

> Setup proxy in Windows network settings
> Then, setup HTTP_PROXY & HTTPS_PROXY environment variable at the system/user level.
> Followed by separate proxy settings for java, maven, docker, git, npm, bower, jspm, eclipse, VS Code, every damn IDE/Editor which downloads plugins...
> On top of everything, find out the domains which does not need to go through proxy and add them to NO_PROXY.. at each level..
> It does not end here. Sometimes, I need to setup proxy for SSH connections... like, if I have to use git with SSH and not HTTP/S... Uhhh....

More than half of the problems me and my dev team face is related to setting the right proxy. Why can't it be like, set in one place and everything picks up from there, like in any linux machine or for God's sake, a Mac ?

Worst of all is, my org uses a configuration script, which resolves into a list of proxy servers, from which one of them will be used. So, I need to download that script, find out which is the right proxy server and then, use it in all the aforesaid places... WTH ?????

Is this a common workplace problem for all developers ??? Will this be solved by Windows Subsystem for Linux ???

So I was setting up ELK (Elasticsearch, Logstash and Kibana) all in one EC2 on AWS today for demo purposes. I had everything prepared. Elastic IP, correct security group rules, etc.

I figured I would just do quick test before writing filters and templates if I can access Kibana. So I started service for it and tried to open it with Chrome.

Timeout.

Checked config file. Compared it to documentation. Seemed good but changed some things just for sake of change. Restarted service.

Timeout.

Reverted changes I've made in config. Restarted service. Curl on localhost. It work... OK. 😐

It took me half an hour but finally I figured it out after I took my phone and opened it from there. It was working from the beginning. Stupid company network was for some reason blocking this connection. Fuck! 😡And I was restarting that poor service like crazy trying to fix something that wasn't broken.

A 100% my github contribution timeline

Pic from Mozilla dev network

Probably my social network website.

There will always be an idiot in a IT department that will ruin your Saturday, by adding a few more network restrictions for no freaking reason, breaking everything else.

The first rule of networking: You can't claim that a message had been received until you have heard the reply.

The most crazy issue I've fixed was caused by a TCP behavior which I didn't know, called the "half-closed connection".
There was a third-party application installed on a production server which called a LDAP server for retrieving users information. During the day we had several users using the application and all worked fine. During the night, when the application was not accessed, something happened and the first call to the application in the morning was stuck for about 5 minutes before returning a response. I tried to reproduce the issue in a testing environment without success. Then I discovered that the application and the LDAP server were located on two different networks, with a firewall between them. And firewalls sometimes drop old connections. For this reason network applications usually implement a keep-alive mechanism. Well, the default LDAP Java libraries don't set the keep-alive on their connections. So, I found a library called "libdontdie", which force the keep-alive on the connections. I installed the library on the server, loaded it at the startup and the weird stuck behavior in the morning disappeared.

A bit confused !
Must prepare an article about network pentest and defense .
Since its a very wide topic and I've been told not to just mention tools , I'm confused about categorizing these tests !
Also the footprinting stage is not likely to have any defense !(no attack is lunched yet :) )

So... Any idea?

Well.

Teachers painfully trying to diagnose internet problems when it literally says in the corner of the windows 7 install that the WiFi credentials are incorrect

Starting to learn neural network...
I have been interested in Machine Learing from long time back.
getting the basics corrected now....
Never thought calculas is going to be required in programming.

How to know your network proxy sucks: when everything IDE-related (downloading new package, using Gradle…) is blocked, but almost everything prohibited (like streaming) isn't.
Love university.

Yay! My Unifi stuff arrived today.
Time to do some Network engineering 😁

A very suspicious thing happened at work last Friday, security team told me to uninstall adblockplus and disconnect.me plugin 😟

Finally managed to get my CNN working with proper tensorboard logging. Think I'm starting to understand how it works.

But it got overfitted...

Social networks would be mostly social graves in less ten years.

Since my ISP doesn't allow port forwards on that port, does anyone want to open their port 445 (if not otherwise occupied by Microsoft-DS) and have netcat reply an empty string or so any request (such as an empty string) sent over TCP (or has anyone already done so)? It would help me out a lot with testing out some networks full port range (since portquiz.net's hoster blocks that port) and would take close to no bandwidth for you.

My client installed a new proxy that severely blocks out most of their own intranet, including their IT service desk. We can't raise tickets to let them know and their email just redirects us to their service desk. Fuck me these guys are idiots.

Anyone knows some good network penetration suite for Android?
I got cSpoit 'cause dSploit is dead. And cSploid seems to be broken - for me, too.

I guess tor and the deep web are gonna be the trend now...

Some <super smart> person ran DHCP in production lab (without disconnecting from main network and/or using firewall)
, now the admin turned all the ports off and went home.
Traffic gens are also unavailable now so are upgrade servers.
Result: I can't run my work over the weekend and the reports are expected on Monday.

Not so bad : I'll run on Monday.
Bad part : This fucking shit takes 2 days to do everything on the rack.

It might be interesting for you that Facebook and viber is somehow dead in iran and ME(since 2 years ago), the main social network in here is Instagram and chat app is Telegram

Anyone on open source social networks? E.g Diaspora* and Mastodon.

I'm diving deep down the Freedom rabbit hole. It's a whole new world.

when you are the one that knows about networks and computer and no one else knows about and it's my fault that it doesn't work and the ISP has a full log of everything that has been done. how about no they don't because it's just router changes not anything that we browsed to on the internet. why don't you go back and do what you do and I do what I do?

And this happened today:

While on ssh session, this guy restarted network manager. According to him "his Facebook page wasn't showing him recent feeds".

What is the social networking programmers use to communicate.
Hey guys.
So what program do you guys use to communicate? Something that I can drop here and not behing spammed. Time to start creating my own network arround you guys... You know, smart people.

Someone wanted to take a look to kde on Ubuntu 18.04 in my laptop, so did:

`sudo tasksel install kubuntu-desktop`

After rebooting and all did:

`sudo tasksell remove kubuntu-desktop`

and now I don't have GUI. The problem is that I can't also have network, neither by WiFi or ethernet. So I can't install packages.

The best way to fix that is to reinstall Ubuntu? Or there is a way to recover the ability to connect to network?

BTW, yes: "someone" was myself.
Shame on me 😔

When you spend 3 days on Xamarins shitty ServicePointManager for HttpClients and final get it to work on all devices

Spent the better part of an hour trying to figure out why nginx was throwing a permission error even though I had the proper user/group permissions. Ends up that the entire path to the web root must have +x applied to it, not just the webroot!!

Had trouble to connect to our MySQL database, so I decided to open a ticket to the Database admins. At least they are pros and I'm sure they'll help me:

"Hey guys, I have trouble connecting to [Hostname]. I guess it's a firewalling issue would you take a look? Attached are screenshots, saying hostname not found.

Answer:
Hey Dominique, are you sure the password you used is correct? Is it yours or the sysuser pw what you sent to the server? How did you send it?

Me: (kind of confused) Hey dear admin, did you look at my error message? It says Hostname not found. What do you think how I provided any credentials?

Support: yes, I saw your screenshot and don't see any password entry. That's why I asked!

Me: Well, than... ok... go and search for another job. Yeah and consider fucking yourself. Kisses.

I think what's worse than bad coding is bad network connection. Can't load StackOverflow, Network Assets, Run Reports, or pull updated repositories because somebody is hogging up the bandwidth. FFFFFFFFFFFFUUUUUUUUUUU

It must be good to at least know computer networking?! I remember nothing about these TCP, UDP, whatever the fudge protocol shite. I don't remember these megabit and megabyte things. All I do is code from one end to another. Anyone else watched Eli The Computer Guy's series?

lets start a lanparty

Here some more information to despise Apple.

In the past few weeks I keep having a problem making the iMac connect to whatever website/host, so I had to rerun whatever I had to do: fetching from github, push to github, connecting to a LAN server, pinging to know to IP, accessing a webpage and so on.
Luckily enough, browsers tend to request again if an error occurs.

At my job, I upload app files to servers, like GooglePlay and AppStoreConnect.

For those who don't know, Google makes you upload the app through the browser (among other ways) while Apple requires you to upload your app either through XCode. No other possible ways.

Whenever XCode requires an update, the authentication is required, but the authentication server cannot be reached for at least 5-6 tries.
Then I have to upload the app and just to be ready to hit the "upload button" it takes like 3-4 minutes, which might be completely useless if a network error occurs.

How hard is it to make your fucking app-loader to try again at least a few times?

Network...or say it's a Neurone connectome

So today I was messing with a side project and for context it’s a networking program.

So I’ve designed the programs packets and what each do. The final step is just constructing them and sending them, but wait some random error that I traced from the file path being wrong to the packet containing a files name but then I realized that the packet after the file name wasn’t sending and so I looked at the contents of the first packet and IT WAS SENDING BOTH CONTENTS IN ONE and I fucking can’t tell you how hung up on this I got because there was nothing wrong with any other packet in anyway, and if I commented the file name packet out the next one worked and vice versa and it was so fucking infuriating and out of desperation I thought “what if I just gave it time between sending both” AND IT FUCKING WORKED. ONE LITTLE FUCKING sleep(.5) FIXES THE PROBLEM THAT PLAGUED ME QUITE LITERALLY ALL DAY I CANT. IM PRETTY SURE ITS STILL NOT A GOOD SOLUTION BUT IM ROLLING WITH IT!