finger

Retrieves information about a user

ftp

Logs into a remote system for the purpose of downloading files

ifconfig

Displays and configures network interfaces

netstat

Displays network information

ping

Checks whether a remote computer can reply to ICMP packets.

rcp

Remotely copies files

rlogin

Logs you into a remote computer

rsh

Launches a shell on a remote computer

rup

Checks whether a remote computer is operational

rusers

Displays users logged into remote computers on the network

rwho

Displays users logged into remote computers on the network

snoop

Captures and analyzes network packets

spray

Sprays a remote computer with network packets

telnet

Terminal emulation-used to remotely log into computers

traceroute

Traces the route a packet takes from your computer to the destination computer