more networking tools
ethtool
- Queries network interfaces and can also set various parameters such as the speed
netstat
- option r is for active connection
nmap
- scans open ports on a networks; important for security analysis
tcpdump
- dumps network traffic for anaysis
iptraf
- monitors network traffic in text mode
mtr
- combines functionality of ping and traceroute and gives a continuously updated display
dig
- Tests DNS workings;a good replacement for host and nslookup