Originally posted here by phishphreek80
ping, hping2, tracert, nc, iptraf, ettercap, nmap, tcpdump
These are good commands but I think you had a bit of OS dyslexia. Tracert works in dos and the linux equivelent is traceroute. Another cool network command thats built-in to linux is ssh. It lets you connect to another linux box, or any other computer running an ssh server, and all your packets are encrypted. Its a lot like telnet but more secure.