All My Brain Where stuff from my brain lands

April 20, 2020

Pantech/Verizon UML295 USB cellular access on Linux.

Filed under: System Administration — Tags: — Dennis @ 2:47 pm

I recently had need to attach a Verizon USB dongle to a Raspberry PI device running Linux for mobile internet access. Documenting here in order so it won’t take so long to find this in the future if I need to get it to work again.

Steps:

I used another computer (Mac or Windows) in order to set up the device initially. You can browse to 192.168.32.2 and under the settings ensure that 1) the firmware is up to date and 2) the device is set to automatically connect.

On Linux, the device first enumerates with Vid/Pid 10a9:606f. If it does not receive a command to switch, it changes to 10a9:6072. This interface seems to bind properly with the qmi_wwan driver but I wasn’t able to connect to the internet with that and it isn’t what the other platforms were using. You want the 10a9:6064 interface. In order to get that interface, you can use udev and usb_modeswitch to cause the device to come up as expected.

ATTRS{idVendor}==”10a9″, ATTRS{idProduct}==”606f”, RUN=”/bin/sh -c ‘usb_modeswitch -v 10af -p 606f -F 4′”

/etc/udev/rules.d/99-lte.rules

If that works properly, you should have something like the following via lsusb:

Bus 001 Device 029: ID 10a9:6064 SK Teletech Co., LtdĀ 

From there, it just worked for me with the cdc_ether driver. Linux was able to grab an IP address from the device.

June 19, 2019

Darn Server Software

Filed under: System Administration,Web — Dennis @ 8:43 am

We commonly refer to software that you aren’t using all the time as becoming susceptible to bit rot. After discovering multiple things that didn’t work on my site, I went ahead and updated all the software to latest revisions.

In the mean time… if you need to contact me, you might try twitter @allmybrain. I’ll work out the bugs in the contact forms sooner or later.

May 11, 2018

Server Updates

Filed under: Miscellaneous,System Administration — Tags: — Dennis @ 9:20 am

I’ve tried to keep this server up to date but it seems like sometimes you just have to start over.

Here are todays adventures.

  1. Try to find out why my contact form is blank
  2. Delete the old contact plugin that won’t work.
  3. Delete all the other old plugins that won’t work for I don’t know what reason.
  4. Search google/wordpress for plugins that have good reviews.
  5. Update pages with new plugins.
  6. Install even more plugins and fixes so things can start working.

Yeah.. better now. I hope.

August 29, 2014

Slow site lately

Filed under: System Administration — Tags: , , — Dennis @ 9:04 am

Over the last few weeks I noticed this site becoming steadily slower. Turns out I had an unusual amount of requests for /xmlrpc.php.. which in turn caused the server to use up all it’s http processes answering bogus rpc queries for ping backs and whatnot that the nice script kiddies all over the world are trying to exploit I guess.

So… took care of that. Hopefully things are back to normal. I’ll have to go back and re-evaluate if I actually want any of that functionality I guess.

November 22, 2011

Changing server ip addresses

Filed under: System Administration — Tags: , — Dennis @ 9:04 am

OK, so I changed my virtual server ip address in response to my host being allocated a new block of IPs. Anyhow, things seem to have gone ok. I changed DNS timeouts to short, waited, updated everything etc etc… Of course, it seems that there are always some DNS servers here and there that don’t quite play by the rules. That and I don’t directly control my secondary name server. Hopefully nobody experiences too much down time.

January 30, 2011

Why and How to use OpenDNS.com

Filed under: System Administration — Tags: , , — Dennis @ 7:09 pm

I’ve been recommending to friends and family that they use OpenDNS.com to help safeguard their homes from adult content. A few things have changed since I originally started using their service and I thought I’d write up a little article to help everyone understand.

Lets start with the “why”. I’m not going to focus on the reason to have some filtering technology. Instead, I want to help educate on the different types of filters and why I prefer OpenDNS. Basically, there are two types of technology being used to filter content. One methodology is to install software on a computer that monitors the computers network activity and redirects filtered content to a blocked page. The second approach is to not intrude upon the computer’s installed programs, but to handle the filtering at a network level. OpenDNS.com falls into the second category. I prefer it because I don’t have to manage every computer in our home and I don’t have to have software that potentially slows my computer down.

(more…)

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