April 30th, 2008

CDPSnarf - CDP Packet Sniffer

CDPSnarf if a network sniffer exclusively written to extract information from CDP packets. It provides all the information a “show cdp neighbors detail” command would return on a Cisco router and even more.
The application is written in C using the popular PCAP library.

Sample Output
Cisco AIR-AP1231G-E-K9 Access Point:

$ sudo ./cdpsnarf eth2
Waiting for a CDP packet…

[#0] Sniffed [...]

May 21st, 2007

Cisco IOS FTP Backdoor Ripe for Hackers

Another flaw in Cisco’s IOS, this time a problem with FTP, the mechanism used to update the firmware on Cisco devices (routers & switches mostly).
You really don’t want someone playing around with your configuration files on your router do you?

IOS FTP, which comes disabled by default in IOS, is used to upload IOS software images [...]


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