Technology Insights

How to install DD-WRT Firmware on a Asus RT-N16 Wireless Router

I recently ordered one of the newer Asus routers just to stay up on the wifi world and I decided on the RT-N16. I normally like open-wrt firmware however its still listed as a work in progress for this router. This left me with 2 options, Tomato firmware and DD-WRT firmware. For the first run I decided on DD-WRT. Below I will outline the relatively simply steps to get up and running with dd-wrt on the n16

Code Snippets

Script to Find All IP Addresses on a Internal Network

I was working on a presentation this morning and as I was writing I realized I did not have a quick fast way to make a list of all the internal Ips on a LAN (Local Area network). Many of the tools I use including nmap, nessus and nexpose will accept a list of ips so  I decided to whip up a quick dirty shell script to get the job done.  I may clean it up in the future but for now it does its job. This is meant to work on Backtrack 4 but in its current state it will work on any Debian based distro. As always with any code found on the internet you use this at your own risk. Also I am sure this can be done better but like I said it was a 10 minute fix.

Technology Insights

Xbox 360: Your NAT Type Is Moderate, Configure Port Forwarding On Your Router

If you have an Xbox 360 connected to the Internet (Xbox Live) on your LAN (Local Area Network) then you have at one point or another probably seen an error message stating something similar to “Your NAT type is Moderate”. This message was more than likely discovered while troubleshooting your Xbox 360’s connection over your home network to Xbox Live. Some of the problems associated with the “Your NAT type is Moderate” include but are not limited to problems connecting to Xbox Live online games, issues joining Xbox 360 Party Chats via Xbox Live, other Xbox Live users having problems connecting to your Xbox 360 when you are hosting an online multiplayer game, and almost any other scenario where you are attempting to communicate with other Xbox Live users from the Xbox 360 connected to your Local Area Network.

Technology Insights

Linksys WRT600N With dd-wrt Firmware VPN PPTP Client Connection to Linksys RV016 PPTP VPN Server

A company I work for has a VPN connection at the office and from time to time I need to pull firmware, software, or various documents from them. Other times there are a couple Linux servers on the local network that I need to work on so I can either SSH from the outside or create a VPN connection and hit the devices through the local network. The amount of data I am pulling from the local network has become more frequent so I needed to find a way to not have to create a VPN connection from my laptop so often and was thinking that it would probably just be easier to connect my Linksys WRT600N router running dd-wrt firmware to the office VPN server. This way I would always have a connection to the office without having to interrupt work and create a PPTP VPN connection.