Technology Insights

Install Telnet Using Cygwin On Windows 7

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You can install telnet on Windows 7 by following the directions in this article however you may want to instead install telnet using cygwin. The cygwin application provides you  Linux type environment in Windows and you can use the cygwin installer to install lots of different Linux applications. One application that you might want to install is telnet however if you search for telnet via the cygwin installer there won’t be any results provided. Below is information on how to install telnet using cygwin on Windows.

Technology Errors

Windows 7: Telnet Is Not Recognized As An Internal Or External Command

Errors57 Comments

I needed to test a Exim mail server from my Windows 7 laptop a little while ago and was surprised when I typed telnet I received an error. The error indicated that the telnet client was not installed on my laptop which seemed odd since I have Windows 7 Ultimate. I assume that telnet in general is being phased out of most operating systems in general however it is a great tool for troubleshooting. After a little digging around in the Windows Programs Control Panel I was able to easily install telnet. Follow the directions below to install telnet on your Windows 7 computer.

Information Security

Backtrack 4: Information Gathering: Route: 0trace – Traceroute Firewall Bypass Tool

Security6 Comments

This is the first in a series of Backtrack 4 articles I will be writing regarding the tools available within Backtrack 4. I am fairly new to Backtrack so please comment, teach me, ask questions, or whatever you prefer in the comments section below. I am going to try to go down the list of every single Backtrack 4 tool and write a complete description including instructions on how to use the tools. This first article is on 0trace (0trace.sh) which allows you to perform a traceroute from within an established TCP connection such as HTTP which will be demonstrated below.

Technology Insights

Daemon In Linux To Open A TCP Port That Listens On Every IP And Logs TCP Connections

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Yesterday a colleague at my company was doing some testing with a potential partner and they needed to open a TCP port on one of our development servers so an application could bind to that port. At first I wasn’t sure how I should do this since the port didn’t need to do anything but listen for incoming connections and the remote application would simply connect to that port. To get something up immediately for them I simply had our web server listen on the requested port which worked however I did not want the web server running on this port for long so I needed to come up with another solution to simply open the port, listen for connections, and possibly log those connections so we could troubleshoot if necessary. I ended up finding an application called tcpsnoop which I explain how to compile and use below.