TCP/IP Traffic Monitoring. IP Performance and Traffic Monitoring | DNSstuff
19 Best Linux Network Bandwidth Monitoring Tools
How to: Monitor real-time IP/network/Internet/LAN traffic, interface statistics etc. in Linux/Debian/Ubuntu/Kali Linux/CentOS/Fedora/RedHat etc. > Blog-D without Nonsense
A Smackerel of Opinion: Monitor network traffic using iptraf