The asumption that all networks have their shit together is generally not
a good one. The problem you experience used to be almost the entirity of
my job at medweb.
Of course the box that the route is hanging on is the problem. It has no
route, so that's where you need to start looking. You've got the right
idea though.
Tack is right too, if you can get your hands on tracepath, it's a much
better program.
sach
On Sat, 30 Jun 2001, Daniel Trudell wrote:
> I can ping it, so it's prolly not being picky as to who it answers icmp
> requests from. Is the problem machine behind a firewall or other node
> that can keep a spiteful eye towards unknown hosts? It's possible that
> it may be blocking ther replies.
>
> some alternatives...try using tracepath instead of traceroute....different
> packet params. Also....try using nmap to ping it....you have much greater
> control over what kinds of packets are used for the scan, and other nifty
> features. If you do suspect it's a firewall problem, do your trace using
> UDP over port 53. Most firewalls will let port 53/udp through because that's what
> DNS uses (alternately, you can try to telnet to port 53 on that box). If
> that doesn't work, use fragmented packets, some stateless firewalls can be
> duped by those.
>
> tack
>
> On Fri, 29 Jun 2001, Erik Curiel wrote:
>
> >
> > Does anybody have any ideas on why I might be able to ping a certain host
> > from one box but not from another? It's webnic.registrars.com. I can
> > ping it from my box, but not from another one on another network. I can
> > ping other things from that box, though, so it's not (just) a problem
> > with that box's connection to the outside world. If webnic.registrars.com
> > is up, then shouldn't basically *any* be able to find a route to it if one
> > can? Traceroute just hangs from the one box as well after a certain
> > point.
> >
> > Any suggestions would be greatly appreciated.
> >
> > Thanks!
> >
> > E
> >
> >
>
>
--
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sach jobb
sugoi consulting
1177 polk street
san francisco, ca
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415.345.8871 (f)
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%s/windows/linux/g
"Hacker /n./: ...7. One who
enjoys the intellectual
challenge of creatively
overcoming or circumventing
limitations."
--Jargon File 4.1.2
(http://www.tuxedo.org/~esr/jargon/)
