What would cause trace route to fail at the first hop ?
am 19.11.2007 09:52:53 von scott
Hi,
I had a problem with a URL at the weekend.
www.correctdomain.com did not resolve to IP address.
I tried trace route from several sources (online sites) and they seem to
fall a the first hurdle (i.e no first hop).
The DNS A record was setup to correct IP (has been for a year)
I amended the URL to FWD to IP but this cause a problem with session cookies
with my app security.
So i am now using web forwarding to new URL which works.
What would cause trace route to fail at the first hop ?
Im assuming my IIS setup cannot infulence this so early on in a trace ?
Other domains worked fine from same online tools.
Thanks for your time
Scott
Re: What would cause trace route to fail at the first hop ?
am 19.11.2007 16:45:44 von .._..
Trace route and ping are both protocols that are likely blocked by many ISPs
now days because of bugs and risk of bugs that allow DOS attacks (denial of
service).
So routers and firewalls and such are often simply set to drop those kinds
of packets.
Failing to trace anywhere is not an indication of any sort of networking
problem anymore. If you do get a trace through, the timing and hop names
and numbers are likely still correct.
"Scott" wrote in message
news:%23NZbTmoKIHA.4688@TK2MSFTNGP06.phx.gbl...
> Hi,
>
> I had a problem with a URL at the weekend.
>
> www.correctdomain.com did not resolve to IP address.
> I tried trace route from several sources (online sites) and they seem to
> fall a the first hurdle (i.e no first hop).
> The DNS A record was setup to correct IP (has been for a year)
> I amended the URL to FWD to IP but this cause a problem with session
> cookies with my app security.
> So i am now using web forwarding to new URL which works.
>
> What would cause trace route to fail at the first hop ?
>
> Im assuming my IIS setup cannot infulence this so early on in a trace ?
>
> Other domains worked fine from same online tools.
>
> Thanks for your time
> Scott
>
>
>
>
>
>