Dropbear SSH Server and Client - Dropbear is a relatively small SSH 2 server and client.
SmartSniff - SmartSniff is a packet sniffer that capture TCP/IP packets and display them as sequence of conversations between clients and servers.
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
netcat - Netcat is a featured networking utility which reads and writes data across network connections...
Ethereal - Ethereal® is used by network professionals around the world for troubleshooting, analysis...
Ettercap - Ettercap is a suite for man in the middle attacks on LAN.