FC6 unable to get out of local network

[Lennart Sorensen]

On Wed, Aug 29, 2007 at 07:28:04AM -0400, Paul Nash wrote:
> I've just seen a very wierd FC6 install.  The machine can reach anything on
> the local network, but cannot get outside.  The IP, netmask, gateway are
> all set correctly.  Outgoing packets get to the gateway, which forwards
> them, but return packets are ignored.
> 
> I've tried turning iptables off; makes no difference.  Tcpdump does not
> show any of the return packets either.  Tcpdump does not show ICMP packets
> either, only TCP or UDP.
> 
> Traceroute gives "no response" indications in bursts, about 5 lines of "* *
> *", then a 5-second wait, then five lines of "* * *".

Many routers especially at ISPs don't respond to traceroute requests.
Doesn't mean much necesarily.

> Box is a new-ish 64-bit AMD, running 32-bit FC6.  Next move is to
> re-install on an old P3 and see whet happens.
> 
> Anyone else seen anything like this?  Any ideas?

Can other machines go through the same gateway?

If yes, then it sure is weird.  If no, fix the masquarade setup on the
gateway.

--
Len Sorensen
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