Re: Using Shorewall to remove martian warnings from kernel log

SHOREWALL

You can turn off on shorewall.conf
LOG_MARTIANS=No

KERNEL

You can turn off martian logging:

echo 0 > /proc/sys/net/ipv4/conf/{all,default}/log_martians


Regards.



El 18/10/2023 a las 10:07, David Watkins escribió:
> Hi,
>
> I'm a long time shorewall user, but with very basic skills, running a 
> simple 2 port firewall between my ISP and a home network.
>
> Home network is on 192.168.0.x
>
> My wife has configured her laptop NIC with both a 192.168 address and 
> a 172.16.x address, so that she can connect to a private development 
> system at her office (this system uses static IPs only).
>
> This means that when she connects at home the firewall machine log is 
> flooded with kernel warnings about 172.16 martian packets.
>
> I can disable these warnings in the shorewall log but they still 
> appear in the system log (journalctl).
>
> Can I use shorewall to drop them before the kernel sees them?  or is 
> there some other way of cleaning up the log?
>
> Thanks for any help.
>
>
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