# Munin port traffic plugin


I wanted to look at the increase in `ntp` traffic now that I've
joined the `pool.ntp.org` ranks. Unfortunately `munin` didn't
have a watch-port-x-and-draw-something-plugin. So I wrote my
own based upon the `ip_` plugin.

The plugin monitors both v6, v4, tcp and udp and plots them 
together, as send and received. Just symlink the port number
to the plugin:

    ip_port_123 -> ip_port_

For it to work, you *do* need some `iptables` rules, so yes, this
plugin only works in Linux. See the 
[munin plugin](/downloads/2012/ip_port_)
for the documentation.

Obligatory screenshot:

<img src="gfx/2012/ip_port_123-day.png"/>