Re: Unexplained wan/lan activity

From: Graeme Hinchliffe (graeme.h_at_zen.co.uk)
Date: 07/01/03 

Date: Tue, 01 Jul 2003 13:58:19 +0100

On Tue, 01 Jul 2003 05:01:17 -0700, david m. chinn wrote:

> Hello all...
> pardon if this is a bone head question... i'm kind of a newbie with
> firewalls and networks and such.
>
> My internal network is connected through an asante firewall to a dsl
> modem. A little while ago I noticed wan activity going on, even
> though nobody was doing anything at the time. The wan light would
> blink a bit every five seconds or so.
>

Hiya
        It could be ARP packets, or keep alives. I know that on my broadband at
home (NTL UK) I can see ARP for people on the same segment. So if other
people are using their connection, chances are the ARP's are what you are
seeing. Or other traffic.

I assume you are using a Windows system, if you can get hold of one for
windows (I am a linux user and don't know of any sorry) try a packet
sniffer, this should show you and possibly even identify ALL packets going
in and out of your interface.

Hope this is both right and of some help :)

Graeme

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