bill@0spam.net writes:
> I am having a problem reaching what should be an easily reachable
> server going through 4 ISPs. I have no problems pinging or
> tracerouting to other hosts on the Internet. The target server is
> reachable from just about anywhere except the DSL connection I'm going
> through. The route goes through four ISPs: Xspedius, AT&T, Qwest, and

Are you _sure_ it's a routing problem? If it is, then looks like it's
fairly clearly within speakeasy.net, as the last working hop is there
as are all of the hops past that point.

There's another possibility, though. Having the site be unpingable
and not appear on traceroute implies that ICMP messages aren't getting
through. Some "security expert" may have installed a filter on that
path that discards ICMP.

DSL lines often use PPPoE, which has an unusual MTU cap of 1492. In
order to contact most web sites on the net, you then may need working
path MTU discovery, which is in turn thoroughly broken when these
"experts" filter away ICMP.

The symptom for this would be that small-sized TCP packets get through
just fine, but the largest ones never do, and connections just time
out.

Is that what you're seeing?

--
James Carlson, KISS Network <james.d.carlson@sun.com>
Sun Microsystems / 1 Network Drive 71.232W Vox +1 781 442 2084
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