Technology Insights

Configure WRT54GS Running DD-WRT To Connect to Office VPN Connection

I have configured a Linksys WRT600N to connect using PPTP to my company’s VPN server in the past as noted in this previous article. I have since swapped out the Linksys WRT600N with a Linksys WRT54GS because I wanted to replace the antennas with larger antennas to work on getting better wireless coverage in my workshop in the basement and with the primary wireless router being located on the second floor of my house I needed to do numerous things to squeeze as much signal as possible. I also noticed numerous other issues with the WRT600N including the router locking up on a regular basis as well as dropping connections.

Technology Insights

How to Remove GarageBand on Mac OS X

Recently my wife let me know that her Macbook would only work for about five minutes. Now in knowing that her technical knowledge is limited I asked specifically what that meant and she explained that she could visit web pages for a couple minutes and then her browser no longer worked. The computer was still on but no web pages would come up.

After a little troubleshooting I realized the Macbook was out of disk space. She uses Safari primarily so I imagine some temporary cache was filling up and not allowing future web pages to open up. She is running OS X 10.4 so I needed to find out how to clean up the disk a bit. I decided to do two things which included removing GarageBand which she has never used and archiving some of her older music and pictures.

Technology Insights

Filtering traffic by IP address with Wireshark

I use a tool called Wireshark to monitor network activity including IP traffic. Sometimes, when I’m running a music app, chat client, etc, the traffic can get overwhelming obviously. Put the following line in the Filter toolbar text field to filter by destination IP: ip.addr == 76.42.1.37 Once you apply the filter, you can sort…

Technology Insights

How to SpeedTest LAN Traffic on Windows and Linux Clients and Servers

Testing your Local Area Network (LAN) speeds on a regular basis is a good idea to make sure you don’t have any major issues that have crept into the network. I would recommend a couple different free tools to use to accurately test every machine on your network. Below will be a brief explanation of each of the solutions followed with instructions and possible issues you might run into.

Windows clients and servers can be tested using Totusoft’s LAN Speed Test which could also be used to test Window’s clients that have network shares to Linux servers. The application is extremelly simple but will provide a nice basic overview of the speeds your LAN is capable of. The application writes a file to any network share, clears the file cache, and then reads the file back to make sure its not reading the file from cache instead of writing it over the network.

Technology Insights

How to Move PPTP VPN from Windows XP to Router with DD-WRT

Its very easy to move your work PPTP VPN from your Windows XP computer to a wireless router running the dd-wrt firmware. DD-WRT firmware runs on most wired and wireless routers on the market today including the ever popular Linksys wrt54g.

Once your router has the dd-wrt firmware installed make note if the configuration settings you use for your PPTP VPN including username, password, VPN server IP, remote IP subnet mask, and remote IP subnet.