Technology Insights

How to Install nmap Security Scanner on Windows XP

Installing nmap security scanner on Windows XP is fairly easy. The easiest way is to download and run the nmap stable release executable file currently located here. You can verify the latest release by visiting nmap’s download page here.

Once the nmap.exe file is downloaded just double click it and choose a location to unpack the files. The easiest place would be something like c:\nmap or if you have cygwin installed you might want to do c:\cygwin\nmap. Make sure to note the location as you will need to add this to your path so you can execute it without having to be in the nmap directory.

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.

Technology Insights

Add Static DNS Entries to DD-WRT Router Firmware

It is easy to add static DNS entries to the dd-wrt GUI interface. Follow the below simple steps and then reboot your router. In the below directions the dd-wrt version is v24-sp2.

  1. Login: First login to your wired or wireless router that is running dd-wrt software.
  2. Open Services: Click the “Services” tab which will default to the “Services” sub tab as well.

Technology Insights

DDWRT – What do the PPTP Settings for MPPE no40 and no56 Mean?

MPPE stands for Microsoft Point to Point Encryption. MPPE is used to encrypt data traveling over a PPTP, or Point to Point Tunneling Protocol, connection.

When setting up a PPTP connection using DD-WRT firmware on your router there is a blank field to configure MPPE Encryption options in the VPN/PPTP setup. By default the text “mppe required” is typed into this field. You can add a couple other options which include no40, no56, and stateful or stateless. Descriptions of these options are listed below.