Need vstat like network monitor with option to filter specific ip's

[HawkBoy]

Hi,

I'm looking to monitor my monthly internet traffic (my ISP is being an ass). vnstat is basically perfect, but I don't know how to separate intranet traffic from internet traffic (I do a lot of file transfers between the different computers in the house) and can't get good numbers.

Is there another application that can let me do this? Or can I configure vnstat to ignore specific ip's in its report?

Thanks

[nissan.bakish]

Hi

Did you try WireShark ??

Its an excellent network analyser.

yum install wireshark ----this is for the gui/

You can use tcpdump for tui/

man tcpdump

Rgds

Nissan

[HawkBoy]

Hi,

Thanks for the info. I may be wrong but I always thought apps like ethereal (what's going on with the naming anyways?) would slow things down too much to be used so broadly (I would like to have the thing on permanently for over a month).
Am I wrong? Is there something half way between vnstat and wireshark?

Thanks

[nissan.bakish]

Ethereal is the previous name for wireshark.
tcpdump will probably stay for ever.

I don't know for halfway between

Rgds

Nissan

[HawkBoy]

Ok. Thanks for all the help.
One last question. I've used ethereal before, but as far as I know it records packets and if I leave it on for a month it'll take way too much space.
Is there anyway for me to just record the packet ip's and sizes or just keep a running count of the usage?

[HawkBoy]

Hi again. Please tell me if this is correct:
I am now running tcpdump with the needed filters and the '-e' option. I pipe the output to a script that catches the 'length' output of each line and adds those up to calculate the total traffic I get.
Is this correct?