Running Gauntlet V5.5 on Solaris 2.6, the HTTP proxy
seems to behave inconsistently.  There is one site in
particular that I had not been able to reach (port 80)
from an internal machine.  We have been noticing some
MTU-related problems and have been able to address
some of them by adjusting (lowering) MTU size to
something on the order of 1400 bytes on the internal
Windows clients.

The MTU tweak, however did not have an effect on this
particular site no matter how low I made it.  I have
also tried to get to site with both PMTU discovery
turned on and off on the Solaris machine.  My
perimeter router allows ICMP types 3&4 (fragmentation
needed).

I finally created a packet filter on the firewall and
made corresponding router change to allow port 80
traffic to pass directly from my internal NT
workstation to the web server and back.  I was then
able to reach site instantly from my internal
workstation.  I am also able to web to site from an
unproxied workstation off another router interface. 

Is there some known issue with the Gauntlet HTTP
proxy?
Is there a parameter I can tweak for the HTTP proxy
itself?
What could I suggest to remote web site admin if fault
lies at remote end?
Could encryption be at fault as it exists between us
and remote end?  This, however is the case for links
between us and many other sites with which we have no
problem.

Thanks.

Joe Volk
Embittered Browns fan.


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