Martian packets, as someone else already said, are packets arriving on a
network from a source address that shouldn't be on that network. They
are either some network device that is mis-configured  and spewing
packets onto the wrong network (the usual case), or an attempt to break
into your system by someone being tricky (unlikely). You can track this
down by doing a tcpdump with mac addresses and matching packets,
perhaps. 

In any event, pfilter turns on martian packet logging by default. Every
time that the pfilter service is started or restarted, it will turn
martian logging back on. To get rid of the logging, look in the
/etc/pfilter.rulesets/pfilter.default.rulesets file for this:

# Turn on martian packet logging.
for special in `ls -1 /proc/sys/net/ipv4/conf/*/log_martians
2>/dev/null` ; do
  echo echo 1 \> $special                %if %verbose%
  echo 1 > $special
done

and change the 1's to 0's like this:

# Turn off martian packet logging.
for special in `ls -1 /proc/sys/net/ipv4/conf/*/log_martians
2>/dev/null` ; do
  echo echo 0 \> $special                %if %verbose%
  echo 0 > $special
done

and then start or restart pfilter.

I will update pfilter to log or not log the martian packets, depending
on whether packet rejection logging is turned on or off, respectively. I
should have thought of this before.

On Sat, 2004-01-10 at 06:03, Sathya SH wrote:
> Hi,
>    I am seeing some " Martian Source error ....." message in my master
> node when I am connecting my cluster in public network. This message I
> am getting only when I am working in text mode terminal.
>     Anyone knows what is this error and how to block it.
>  
> Thanks
> spp
> 
> 
> ______________________________________________________________________
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> Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes
-- 
Neil Gorsuch <[EMAIL PROTECTED]>
NCSA



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