Lukas Beeler’s IT Blog

Fancy graphs are only for managers

I’ve heard this one more than once, and it just isn’t true. While hard numbers are good for many things, they are usually not adequate for looking at Network connections.

Especially with the advent of VPN connections throughout multiple ISPs, companies, etc. there is a need to have a less subjective view of the quality of these links. Luckily there are many open source options available for graphical network monitoring.

The most important tool for WAN connections is SmokePing. With Cacti, you can graph almost anything. SNMP support is built in, and you can also use scripts. I’ve used many scripts with SSH commands and public key authentication to transfer even sensitive statistics over the network.