Ipfw accept rule

Nathan Kinkade nkinkade at ub.edu.bz
Thu Sep 23 08:17:12 PDT 2004

On Thu, Sep 23, 2004 at 01:36:57PM +0545, Bikrant Neupane wrote:
> Thanks for the reply.
> Well I am not looking for the count rule.
> Actually I have some other situation. I am trying to implement b/w shaping 
> using ipfw. And i am trying to include mac address based filtering in it as 
> well. As long as I don't implement ipfw in ether (net.link.ether.ipfw=0/1) 
> pkts hit the rule only once and I get the b/w as specified in the IPFW pipe 
> syntax. However when I enable ipfw in ether all the pkts hits the matching 
> rule twice. and as a result I get half of the b/w to what has been specified 
> in ipfw pipe.
> This is normal (as mentiontioned in ipfw man page) since pkt traversal is  
> doubled when IPFW is enabed in ether. 

Would the following sysctl variable help your problem?

From the ipfw manpage:

net.inet.ip.fw.one_pass: 1
	When set, the packet exiting from the dummynet(4) pipe is not passed
	though the firewall again.  Otherwise, after a pipe action, the packet
	is reinjected into the firewall at the next rule.

PGP Public Key: pgp.mit.edu:11371/pks/lookup?op=get&search=0xD8527E49
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