On Thu, Feb 03, 2000 at 09:11:03PM +1100, Col Mackrory wrote:
> Hello All,
>
> I had diald running quite happily, until my ISP suddenly started sending
> IGRP packets to me on my dialup connection.
>
> These keep my link up as diald does not ignore these packets. My dialmon
> tells me the packets have 30 seconds to live. Since they come in every 5
> seconds the link is held up.
>
> How do I filter these out?
I think (think because I haven't tested it, nor have any way to test it) you
can filter it one of two ways; either at the firewall level, or at the diald
level.
If you're using Linux 2.1 later (with ipchains) the rule:
ipchains -A input -p 88 -i ppp0
should do it (you may need to replace ppp0 with whatever interface your
modem comes up on, or leave the -i argument off altogether if you don't care
about IGRP packets).
With diald, the rule:
ignore ip ip.protocol=88
or possibly
ignore ip ip.igrp
should do it. The second rule requires you have a line in /etc/protocols:
igrp 88 IGRP
I'd like to know if one or both solutions worked for you.
Michael
--
Administrator www.shoebox.net
Programmer, System Administrator www.gallanttech.com
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