[CentOS] VPN Traffic

[Shiv. NK]

> Can you provide a somewhat less generic term for "the VPN traffic"?
>
> If the VPN has an interface, then you can monitor this like you monitor
> any other interface, yes with Nagios / Cacti and the like...
>

Dear Glies,

Thanks for the information sent. VPN is between two Cisco routers. using
SNMP, it is possible to monitor the interface traffic for a snmp enabled
device through Zabbix/Cacti. But cannot differentiate between the the kind
of traffic.

Saying other way, there is internet traffic on the same interface part
from VPN consumption. I am searching for a specific tool if exists, that
can differentiate the kind of traffic and graph separately.