Cancel restart from automatic updates

Have you ever been working on a very important project and needed to put off the forced restart that many system administrators have setup on their domain?

As long as you have local admin rights it is a simple process of running the following command from the command prompt.

sc stop wuauserv

Sc.exe is part of the windows resource toolkit, it is called Service Control and can be used for all sorts of service manipulation.  The stop word is fairly self explanitory.  The final word is simply the name of the service to be stopped, in this case the service running the windows update that controls the annoying dialog.

Secure Shell Tunneling

Recently I have had need to get to some websites that were not reachable from my current network location.  They weren't bad websites, just a password storage site and some school related information.

So I started looking around at the various proxy solutions to see what they had to offer, unfortunately, most free proxies have been blocked on many networks in the US for the obvious reason that they help people bypass browsing limitations placed on them.  You can find a listing of many such proxy ips here at: http://hidemyass.com 

This site also offers another kind of proxy called the web-based proxy which allows you to tell their website where you want to go and it will act as a wrapper fetching the content you want inside of itself.  The downside to this method is the ways that the page masks it's content from DNS and IP blocker often leaves the page unusable if the destination page is complex enough.

Fortunately there is a third solution which I was recently taught about called SSH tunneling.  I already love dealing with remote servers so this plays right into my skill-set and has become an easy favorite.  Skill-set might be pushing it a bit far since there really is no skill-set required to implement the tunnel, all the required server software is already naively built into *nix servers and the client end can be downloaded for free.

To route your web traffic over an ssh tunnel first you need some form of ssh client, I use windows so I typically use putty.exe.  Other methods can be read about here: Free SSH.  You will need an account on a remote SSH/*nix server that you can reach.  If you don't have one you can risk using a free one from a list such as this: SSH Proxy List; keep in mind that any server you log into could potentially be tracking or reading any and all data you send through it, including passwords to all your accounts.

1. With your remote account and putty.exe in hand, start up putty.
2. Under Connection/SSH/Tunnels create a new source port, can be any port you choose that is not being used; for destination choose dynamic.
3. Under Session type in the IP or host name as well as Port number (typically 22 for SSH connections).
4. Choose a connection type of SSH and click open.
5. It will probably prompt you to store the key in the registry, go ahead and do it.
6. Login to the remote server with your username and password.
7. Next, in your web browser, get into its settings/network connections/proxy servers; you will want to configure a manual proxy server and set the SOCKS Host to 127.0.0.1 (which is your own computer that now has an open ssh connection)
8. Enter the port you choose when you created the tunnel configuration in putty.
9. And save.

You should now be able to reach any website that you can resolve a name to an ip for.  If you need a free and open DNS server you can use Googles: 8.8.4.4 or 8.8.8.8.

Power Over Ethernet in Switch-port Modules

I recently ran into a rather interesting issue regarding enabling POE for a switch-port module.  Those of you who have worked with routers extensively for years are probably well aware of both the problem and the solution, however those of us who have only a years experience managing them need some nudges in the right direction some times.

Problem:
Now for the problem. We had done some recent updates on our networks routers adding sticky mac configurations to the switch-port modules inside them.  After the update a few of our users started reporting that their IP phones would no longer power up.  Their computers hanging off the same switch-port modules were all working fine.  But not all switch-port modules were having the issue.

Solution:
After spending hours going through the configs we sought external help.  I was lucky enough that the first person I talked to had not only heard of the issue but had been able to find a solution.  The solution was so simple it is almost embarrassing to post it.  I learned that POE for routers modules is tied to the default VLAN for that router, in order to allow power to flow through to the switch-port module we needed to trunk the default vlan through on the switch-port modules trunk port, in our case vlan 1.

As soon as we trunked vlan1 through everything powered up and life was good again.  For security reasons we had been trained to shut the default vlan down and never use it.  It never occurred to me to check to see if a vlan, which was always administratively down, had access.  It is still rather odd that power flows even though the interface is down, yet still requires the interface on the trunk port.

Logitech USB Headset Low Volume

My mother was having problems with her Logitech USB headset, we would be chatting and she was having trouble hearing me.  It took a little while but she finally came across a rather unique solution on the Internet.

A few days later she lost the ability to use her headset at all, I couldn't even hear her.  After some basic troubleshooting I suggested that she try restoring her computer to date prior in which it worked.  This worked and I was once again able to hear her, however she was no longer able to hear me very well.  I looked through my email and found the solution she used once before and using that she made adjustments to her volume until things worked normally again.

She then had a feedback problem which she used a prior blog post of mine which talked about muting the microphone to fix.


I don't know where on the Internet she got the following quote, if anyone knows let me know so I can give credit to the original poster.

I have a logitech usb 250 headset that suddenly one day the volume was verly low on the headset. Have tried and searched for a solution but nothing worked. Today i found a solution that worked for me.

Try this:
1. Open control panel
2. Open sound/playback devices
3. Select Logitech USB Headset, and click on the Properties
4. Opel Levels tab, and click on Balance button
5. Slide one of the sliders so that the values are different, for example top at 100, and bottom at 99

I agree with the original poster that this is a very strange solution, but it work.  I hope this helps someone with their own issues, and hopefully Logitech will come out with an updated driver that solves these issues.

DSL Speed Issue

I ran into a rather intriguing problem recently. My mothers DSL was very slow, she wasn't even getting half of what she paid for. After an upgrade she still didn't see any increase in speed.

The customer representatives said it was because she was too far from the source to get any better speed; which I knew could be a potential factor, however her issue seemed greater than just that. After a great deal of pain and effort one company tech finally had my mother unplug her phone from the DSL filter and immediately all the speed was received.

So we learned that the little DSL filters are not capable of supporting both a computer and a phone. I assume separating two signals instead of one is just too much for the small devices to handle. Using a separate filter solved the issue and allowed my mother to have both fast internet and a working land line.

Microphone feedback problem

I recently ran into a feedback issue where my microphone was feeding back into the speakers. After a little troubleshooting I learned that muting the microphone fixed the issue which was to be expected.

Quite by chance I discovered that even with the microphone muted in the advanced sound properties on my computer the microphone on my headset still worked. So I have come to the conclusion that somehow a second microphone driver got installed on the computer and when I mute it the issue goes away.

File not found for .net page

I recently had an error on a new IIS server where it would always return an error for .aspx files. Other files would work just fine. If I changed the version of .net that the site ran in the IIS settings down to v1 it would find the file, just error out because the code wasn't designed for it.

I finally solved the problem by re-installing v2 of the .net run-time. It seems the install got corrupted.