A network security analysis and monitoring toolkit Linux distribution.
Network Security Toolkit (NST) is a bootable ISO image (Live USB Flash Drive) based on Fedora 42 providing easy access to best-of-breed Open Source Network Security Applications and should run on most x86_64 systems.
The main intent of developing this toolkit was to provide the security professional and network administrator with a comprehensive set of Open Source Network Security Tools. The majority of tools published in the article: Top 125 Security Tools by INSECURE.ORG are available...
Sload is a console/terminal application which monitors network interface load of the remote device (by SNMP) in real time.
Bandwidth Monitoring Tools For Linux
(Requires Python 2.4 or later)
UPDATE: good known alternative is "ifstat"
http://gael.roualland.free.fr/ifstat/
Example of use:
ifstat -b -i "FastEthernet0/19" -s public@172.18.216.1
It's possible to monitor multiple interfaces in the same time !