For this episode of Full Disclosure, we illustrate the many features of Ettercap. Ettercap is a program designed to sniff passwords on a LAN. It can recognize several different packets that contain passwords including Http, Telnet, Ftp, Pop, Rlogin, SSH1, ICQ, SMB, MySql, NNTP, X11, IRC, IMAP, VNC, SNMP, MSN, YMSG, etc. Furthermore, Ettercap can utilize Man in the Middle Attacks to hijack packets and redirect them to the attacker computer allowing it to extract passwords. In this episode, we show you how to use Arp Poisoning, DHCP Spoofing, and Port Stealing MITM Attacks and explain how they work. Also, we explain how to configure Ettercap to sniff encrypted passwords over the Secure Sock Layer (SSL and HTTPS). Moreover, Ettercap can be easily programmed to modify network traffic with the use of Filters. We demonstrate how to make many different Ettercap Filters. Ettercap comes with numerous plugins to advance Ettercap’s abilities; we explain how to use the Check Poison, Re-Poison, DNS Spoofing, Isolate, DoS Attack, Find IP, Gateway Discover, Search Promisc, Arp Cop, and Scan Poisoners Plugins. Lastly, we demonstrate how to use Ettercap’s Passive OS Fingerprinting feature. Ettercap supports passive dissection of many protocols allowing it to identify a host’s Operating System and Services.

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This Full Disclosure episode is very lengthy, almost 50 minutes, so if you have any questions feel free to ask them on the forums

Download Ettercap (Linux)
Download Ettercap (Windows)

Filters:
Irongeek’s Image Altering Filter
Patchy’s Wordpress Filter
Patchy’s Myspace Filter