[hobbit] Re: Conn test problems

[Josh Luthman]

Then I don't see how the FC8 traceroute documentation would be relevant, as
Michael stated that he can do one from the shell but errors out in Hobbit.

Am I missing something here?

On 1/14/08, Hobbit User in Richmond <hobbit at epperson.homelinux.net> wrote:
>
> Presumably.
>
> On Mon, January 14, 2008 12:40, Josh Luthman wrote:
> > Wouldn't the traceroute used by Hobbit be the same command as the shell?
> >
> > On 1/14/08, Hobbit User in Richmond <hobbit at epperson.homelinux.net>
> > wrote:
> >>
> >> Actually, ICMP echo-request and echo-reply packets are almost certainly
> >>  not an issue here, nor is packet-filtering/firewalling.  In current
> >> implementations, traceroute by default uses UDP packets to abitrary and
> >>  unlikely-to-respond ports, varying the TTL and using the ICMP type 11
> >> (Time Exceeded) from hops along the way to map the routing path.
> >>
> >> The manpage in Fedora 8 says "We start our probes with a ttl of one and
> >>  increase by one until we...got to the "host", or hit a max (which
> >> defaults to  30  hops)".
> >>
> >> So, the behavior you're seeing is as documented.  If a firewall were an
> >>  issue in sending/receiving the packets used by traceroute, you'd see
> >> the 30-hop behavior whether the host was up or down.
> >>
> >> On Mon, January 14, 2008 11:17, Michael A. Price wrote:
> >>> Josh,
> >>>
> >>>
> >>>
> >>> Thanks for helping... The source/destination is on a closed network,
> >>> sorry...and I don't own the router...
> >>>
> >>>
> >>>
> >>> But, I don't understand, how the traceroute works when the host is
> >>> up, but when the host is down it times out???
> >>>
> >>>
> >>>
> >>> If it works when the host is up, then you would think the ACL on the
> >>> router just before the host would allow my ICMP packets through.
> >>>
> >>>
> >>>
> >>> What is your thoughts???
>
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>
>


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Josh Luthman
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