Network traffic measurement

[balanga]

Is there any way to tell you much data has passed through a particular network interface?

 

[tobik@]

systat -ifstat -match $interface

netstat -I $interface if you need something non-interactive.

 

[ShelLuser]

tobik@ solution above is definitely the better one, but an alternative extra could be to check your firewall statistics.

For example; if you only want to check how much data has been used by your webserver and you have a rule which allows HTTP traffic to come in then you could check the statistics for that rule. For example: pfctl -v -s rules (if you're using PF of course).