Ping and LAN Problem

Jeffrey F. Bloss jbloss at tampabay.rr.com
Tue Aug 14 16:26:46 UTC 2007


Derek Broughton wrote:

> Marius Gedminas wrote:
> 
> > On Mon, Aug 13, 2007 at 03:31:06PM -0300, Derek Broughton wrote:
> >> Marius Gedminas wrote:
> >> 
> >> > On Mon, Aug 13, 2007 at 08:59:42PM +0530, das ??? wrote:
> >> >> <<<
> >> >> dd at mahammad:~$ ping 192.168.0.2
> >> >> PING 192.168.0.2 (192.168.0.2) 56(84) bytes of data.
> >> >> ping: sendmsg: Operation not permitted
> >> > 
> >> > You get this message when your firewall blocks an outgoing
> >> > packet.
> >> 
> >> I don't think so.  You get that message when there is no route to
> >> the destination.
> > 
> > Surely that would be "No route to host" rather than "Operation not
> > permitted"?
> > 
> I don't remember the last time I saw a "no route to host message" -
> I'm not certain it's still used.  I almost (but not quite) feel like
> emptying my routing table to test it now.  But since I'm network
> connected to the linux box, that seems like not such a good idea :-)

Just saw that error yesterday as a matter of fact, after a machine
defined in /etc/hosts failed to boot up properly (mucking around with
grub) and I tried to ssh into it by name. 

I think the operation not permitted message is generated locally when
certain ICMP type 3 packets are dropped, so that probably is a firewall
problem.

-- 
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