Re: Trouble using traceroute.

[brian moore <bem@cmc.net>]

On Thu, Jan 11, 2001 at 06:25:31PM +0000, sena wrote:
> Hi.
> 
> When using traceroute (as root), I get the following problem:
> 
> decoy:~# traceroute 194.65.3.20
> traceroute to 194.65.3.20 (194.65.3.20) from decoy, 30 hops max, 38 byte packets
> traceroute: sendto: Operation not permitted
>  1 traceroute: wrote 194.65.3.20 38 chars, ret=-1

This is a sign that you have an ipchains (or ipfwadm or iptables...)
rule that is forbidding output of UDP.

> Note that all is fine whan using, for instance, ping:

ping uses ICMP, not UDP.

> Anyone has any clue to what may be the problem?

Yes.

> I'm using woody, with kernel 2.2.18 (self-compiled) and traceroute is
> version 1.4a8.

Look at your filtering rules.

-- 
CueCat decoder .signature by Larry Wall:
#!/usr/bin/perl -n
printf "Serial: %s Type: %s Code: %s\n", map { tr/a-zA-Z0-9+-/ -_/; $_ = unpack
'u', chr(32 + length()*3/4) . $_; s/\0+$//; $_ ^= "C" x length; } /\.([^.]+)/g;