Earlier today I was troubleshooting NFS or Network File System issues on a Ubuntu Linux server and ran into some specific errors. Luckily the errors were easily resolved by restarting portmap on the server. Below I show the error output on the server end in more detail, how to resolve the issue, and testing the Network File System mount from OSX.
copy-router-config – Backtrack 5 – Vulnerability Assessment – Network Assessment – Cisco Tools – copy-router-config
The copy-router-config menu item, which is located in the Backtrack menu (Backtrack > Vulnerability Assessment > Network Assessment > Cisco Tools), is a handy little Perl script put together by Muts himself. Once you click on the menu item it will launch a terminal window in the /pentest/cisco/copy-router-config directory so you will have direct access to the 35 line Perl script which servers a single purpose. That purpose is to copy an entire router configuration file from a Cisco device if you have a RW (read/write) community string for the router.
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.