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Re: [suse-security] net time \\linuxserver causes martian source?
From: Steffen Dettmer (steffendett.de)
Date: Wed Aug 06 2003 - 16:51:12 CDT
* André Sänger wrote on Wed, Aug 06, 2003 at 16:33 +0200:
> Aug 6 16:09:16 <linuxserver> kernel: martian source
> 192.168.80.1 from 10.68.26.117, on dev eth2 Aug 6 16:09:16
> <linuxserver> kernel: ll header:
> In this example 10.68.26.117 is the client ip adress.
> eth0 is the internal interface to the clients,
> eth1 external
> eth2 another internal network to which the client has no direct access
> 192.168.80.1 is <linuxserver>´s ip adress on eth2
So it seems strange why the client connects to that address -
seems to be the wrong one. Are you sure that there is really no
routing for the client via eth2? Did you verified with tcpdump or
> The time synchronization attempt times out after some time on client
> If I stop SuSEfirewall2 'net time' works without problems.
> What has to be configured in SuSEfirwall2 to get 'net time' working?
There are situations, where rp_filter does not work. You can turn
it off. SuSEfirwall2 turns it on, but you can change that.
Somewhere there should be an echo "1" > ..../rp_filter, try to
change the 1 to 0 like echo "0" > .../rp_filter and restart
Sorry, I cannot help much with SuSEfirwall2, maybe there is a
better way to do that - but should solve you problem for the time
you're looking for best solution :-)
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