Graph NAT

adelante · Posted: Tue Feb 14, 2006 8:32 pm Post subject: Graph NAT

Hi,

Something that has been bothering me for a while now, and i can't seem to find anything on google.

I have a firewall right, with a number of servers behind it (the firewall has the public ip's and just NAT's the traffic to the local servers)

Now i have mrtg running on the firewall, but that only gives me the total bandwidth per interface (eth0 and eth1)

Is there a tool out there which can allow me to graph either each of the public ip's seperately or graph the NAT'd LAN ip's seperately.

the_sphynx · Posted: Tue Feb 14, 2006 10:58 pm Post subject:

You can use MRTG or Cacti to graph your internal IPs separately. As far as your external IPs go, are we to assume that you have the entire subnet aliased on your external interface? If that's the case then you can use both of the aforementioned tools to graph those as well. These will require SNMP to be implemented in your infrastructure though. You's just have to figure out the interface names (i.e. eth0:1, eth0:2, etc.) and then it's not that difficult.
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