Kevin wrote:

On Apr 1, 2005 2:06 AM, Cedric Berger wrote:

Kevin Kadow wrote:

I've noticed frag'd ICMP echo-replies being dropped by "scrub in" when
they come from a Solaris host.   Is this a known issue?

Oh Yeah,
That's a long time annoyance of the scrub code, which
(wrongly IMO, but others disagree) drops fragments which have
the "DF" bit set. You'll get the same problem with fragmented UDP
packets from Solaris and Linux (typical with NFS)

Cedric


That makes sense. Changing the pf.conf entry to read "scrub in no-df" makes the problem go away.

Yes, but read pf.conf man page. If you don't also set random-id, you might
find yourself in big trouble with some packets. I mostly gave up on scrub
because of that mess.
Cedric

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