Paul Cammidge wrote:
> 
> sounds like fragmentation problems?  do your rules allow icmp packets?
> 
> paul

It's definitely some weird fragmentation/NAT issue.  Some time ago I had
poor line quality; I reduced the ppp MTU adn MRU to 1100.  This worked
fine, except that some web sites did not come up.  This only happened on
NATed machines.  I could access the web sites from the firewall.

I've now increased the MTU/MRU back to the default 1514, and all is
well.

I allow fragments, ICMP messages, all of the "normal" stuff.  It seems
that fragments don't forward/NAT or something.

Thanks for all the hints and comments.

--Yan

-- 
Famous first words: My, my, my, my, my!
Jason, age 16 mos, to his older sister
  5:01pm  up 4 days, 10:27, 13 users

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