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Search - "tethering"
Taking IT classes in college. The school bought us all lynda and office365 accounts but we can't use them because the classroom's network has been severed from the Active Directory server that holds our credentials. Because "hackers." (The non-IT classrooms don't have this problem, but they also don't need lynda accounts. What gives?)
So, I got bored, and irritated, so I decided to see just how secure the classroom really was.
So I created a text file with the following rant and put it on the desktop of the "locked" admin account. Cheers. :)
1. don't make a show of "beefing up security" because that only makes people curious.
I'm referring of course to isolating the network. This wouldn't be a problem except:
2. don't restrict the good guys. only the bad guys.
I can't access resources for THIS CLASS that I use in THIS CLASS. That's a hassle.
It also gives me legitimate motivation to try to break your security.
3. don't secure it if you don't care. that is ALSO a hassle.
I know you don't care because you left secure boot off, no BIOS password, and nothing
stopping someone from using a different OS with fewer restrictions, or USB tethering,
or some sort malware, probably, in addition to security practices that are
wildly inconsistent, which leads me to the final and largest grievance:
4. don't give admin priveledges to an account without a password.
seriously. why would you do this? I don't understand.
you at least bothered to secure the accounts that don't even matter,
albeit with weak and publicly known passwords (that are the same on all machines),
but then you went and left the LEAST secure account with the MOST priveledges?
I could understand if it were just a single-user machine. Auto login as admin.
Lots of people do that and have a reason for it. But... no. I just... why?
anyway, don't worry, all I did was install python so I could play with scripting
during class. if that bothers you, trust me, you have much bigger problems.
I mean you no malice. just trying to help.
For real. Don't kick me out of school for being helpful. That would be unproductive.
Plus, maybe I'd be a good candidate for your cybersec track. haven't decided yet.
-- a guy who isn't very good at this and didn't have to be
have a nice day <3
oh, and I fixed the clock. you're welcome.2
My Android phone is 5 years old. Everybody tell me I should buy a new one but I'm a stingy environmentalist and I refuse buying new stuff if it is not strictly necessary.
So, for 9€ I replaced the phone battery and then I installed a custom ROM, so it looks a bit newer.
Unfortunately, it seems that something in the network configuration has been fucked up.
The phone is able to browse the Internet, but:
- WiFi hotspot is not working
- USB tethering is not working
- Bluetooth tethering is not working
- PPP over USB is not working
But, hey, I never give up, so this is my current setup:
- I installed a proxy server on the phone
- I'm using "adb forward" to forward the proxy port from the phone to my laptop
- I configured Firefox to use that proxy
And, yes, I'm using that connection to write this post. :D10
I haven't ranted for today, but I figured that I'd post a summary.
A public diary of sorts.. devRant is amazing, it even allows me to post the stuff that I'd otherwise put on a piece of paper and probably discard over time. And with keyboard support at that <3
Today has been a productive day for me. Laptop got restored with a "pacman -Syu" over a Bluetooth mobile data tethering from my phone, said phone got upgraded to an unofficial Android 9 (Pie) thanks to a comment from @undef, etc.
I've also made myself a reliable USB extension cord to be able to extend the 20-30cm USB-A male to USB-C male cord that Huawei delivered with my Nexus 6P. The USB-C to USB-C cord that allows for fast charging is unreliable.. ordered some USB-C plugs for that, in order to make some high power wire with that when they arrive.
So that plug I've made.. USB-A male to USB-A female, in which my short USB-C to USB-A wire can plug in. It's a 1M wire, with 18AWG wire for its power lines and 28AWG wires for its data lines. The 18AWG power lines can carry up to 10A of current, while the 28AWG lines can carry up to 1A. All wires were made into 1M pieces. These resulted in a very low impedance path for all of them, my multimeter measured no more than 200 milliohms across them, though I'll have to verify and finetune that on my oscilloscope with 4-wire measurement.
So the wire was good. Easy too, I just had to look up the pinout and replicate that on the male part.
That's where the rant part comes in.. in fact I've got quite uncomfortable with sentences that don't include at least one swear word at this point. All hail to devRant for allowing me to put them out there without guilt.. it changed my very mind <3
I've tried to plug my DIY extension cord into it, and plugged my phone and some USB stick into it of which I've completely forgot the filesystem. Windows certainly doesn't support it.. turns out that it was LUKS. More about that later.
Windows returned that it didn't support either of them, due to "malfunctioning at the USB device". So I went ahead and plugged in my phone directly.. works without a problem. Then I went ahead and troubleshooted the wire I've just made with a multimeter, to check for shorts.. none at all.
At that point I suspected that WanBLowS was the issue, so I booted up my (at the time) problematic Arch laptop and did the exact same thing there, testing that USB stick and my phone there by plugging it through the extension wire. Shit just worked like that. The USB stick was a LUKS medium and apparently a clone of my SanDisk rootfs that I'm storing my Arch Linux on my laptop at at the time.. an unfinished migration project (SanDisk is unstable, my other DM sticks are quite stable). The USB stick consumed about 20mA so no big deal for any USB controller. The phone consumed about 500mA (which is standard USB 2.0 so no surprise) and worked fine as well.. although the HP laptop dropped the voltage to ~4.8V like that, unlike 5.1V which is nominal for USB. Still worked without a problem.
So clearly Windows is the problem here, and this provides me one more reason to hate that piece of shit OS. Windows lovers may say that it's an issue with my particular hardware, which maybe it is. I've done the Windows plugging solely through a USB 3.0 hub, which was plugged into a USB 3.0 port on the host. Now USB 3.0 is supposed to be able to carry up to 1A rather than 500mA, so I expect all the components in there to be beefier. I've also tested the hub as part of a review, and it can carry about 1A no problem, although it seems like its supply lines aren't shorted to VCC on the host, like a sensible hub would. Instead I suspect that it's going through the hub's controller.
Regardless, this is clearly a bad design. One of the USB data lines is biased to ~3.3V if memory serves me right, while the other is biased to 300mV. The latter could impose a problem.. but again, the current path was of a very low impedance of 200milliohms at most. Meanwhile the direct connection that omits the ~200ohm extension wire worked just fine. Even 300mV wouldn't degrade significantly over such a resistance. So this is most likely a Windows problem.
That aside, the extension cord works fine in Linux. So I've used that as a charging connection while upgrading my Arch laptop (which as you may know has internet issues at the time) over Bluetooth, through a shared BNEP connection (Bluetooth tethering) from my phone. Mobile data since I didn't set up my WiFi in this new Pie ROM yet. Worked fine, fixed my WiFi. Currently it's back in my network as my fully-fledged development host. So that way I'll be able to work again on @Floydian's LinkHub repository. My laptop's the only one who currently holds the private key for signing commits for git$(rm -rf ~/*)@nixmagic.com, hence why my development has been impeded. My tablet doesn't have them. Guess I'll commit somewhere tomorrow.
(looks like my rant is too long, continue in comments)3
Can't connect to server.
Try some.url on the browser
Can't connect to server.
Google the problem
"Maybe you got the URL wrong"
(Sigh. Perhaps it's a firewall thing.)
Switch to tethering
Can't connect to server.
(This is going to be a long day.)5
Fuck the brains of circular dependency.
On a fresh install of OS X on my hackintosh.
1) Let me install HomeBrew
2) I need Command Line Tools to install HomeBrew
3) Xcode dmg is on my Android. Opens Android File Transfer tool.
4) Error: File is larger than 4GB. Need to use adb.
5) Need to install android-platform-tools, which contains adb.
6) android-platform-tools is available in brew. Goto 1).
Note: Networking is limited to tethering mobile data as Wifi chip hasn't arrived yet.4
Okay, I usually don't rant about Windows.
But why the flying fuck does it automatically pick a driver for RNDIS5 for a RNDIS6 device (USB tethering on Android devices)? It's hanging many parts of the systems until I change it to the right driver (which is not shown as compatible and warned against whilst being the only one that works). Seriously, I usually never have problems with Windows, but this is the only thing that annoys the fuck out of me with it.6
I started a short term contract job that requires access to company online resources. Only problem is the office I'm working in has really bad internet. The connection speed at best is comparable to dial up and at worse just non-existent. I tried tethering to my phone but this wasn't working either due to low signal. I mention this as an issue early on the week to the boss. Later in the week the boss asks how things are going at the same time that the network is down. I tell him the same problem. He then tells me his computer is fast and he has internet, so I show him the 2 computers I have access to and how they are too slow/no internet. He then tells me a bad workman blames his tools and he's not happy with me for having problems.
Don't even know what to say to that. I just told him this role wasn't working for me and clocked out.8
Reinstalled Windows 10. Won't detect my Android tethering. Went to another PC to download wireless drivers. Freezes up and crashes. Restarted. "Your PC ran into a problem." Restart? "Do you want your PC to be discoverable?" Yes. Opens Edge to download Chrome. Edge takes two years. Better then Chrome or Firefox of course. Crashes. OK, fuck this I'm going back to Manjaro.3
Jesus fucking christ how can the latest Macbook be such a piece of crap? I'm currently travelling and wondering why I'm getting such an atrocious 40% packet loss and round-trip time up to 3 seconds.
Then I remember having Wi-Fi issues in the office with certain adapters, one of which I'm currently using, while I'm tethering over Wi-Fi ... disconnecting the adapter yields a perfect 0% packet loss and 30ms RTT. It Just Works® my ass. This is _one_ of the things that suck about the macbook.11
Why do you root your phone?
My original reason was to enable things my restrictive carrier prohibited, like tethering. But now that carrier is years behind me. On my previous phone, I rooted to disable onerous pre-installed software. On my current phone, I see no reason to root it at all, except maybe to try out some roms.
How about you?12
I think our network was having a heart attack today. Had to jump in on a webinar after most people had gone home and ended up tethering to my phone to get a decent connection. Hopefully our network guys see the ticket and can fix things quickly.1
I am lazy to pair my android device to another android device via blutooth for tethering(Pan Access Network) for internet access. Wifi sucks too much battery. Whenever pairing is done, device asks for prompt message stating "yes" or "no" for connection. I want that it automatically by default give permission to connect. Is there any possible solution (maybe through adb shell or something). I have tried every site related to this issue but most of them have unix system Bluetooth issues so no luck. Reply if you know a fix.
Erry day I'm tetherin'
Because the fucking WiFi driver gives up on life every 3 months, repairing takes about a month everywhere and I have 3 devices, so there's not a whole week that I can spend without usb tethering from my phone.