Re: Connection refused.. / Could not connect
Hi,
> I still think this is probaly a trivial problem for someone familiar with
> network issues and or Linux, but as a newbie I really don't know what coud be
> causing this.
I don't think that is it that simple. The only hint is the traceroute
output
1 193.29.247.1 (193.29.247.1) 2.094 ms 2.113 ms 2.037 ms
2 193.29.247.1 (193.29.247.1) 2.181 ms !H 52.553 ms !H *
where (!H) means "no route to host".
Maybe the firewall at simpleware is confused about a particular
property of your tcp header and therefore sends back an
"no route to host" icmp packet. Hard to investigate without access
to the firewall logs.
Just a shot in the blue: Do you have the ECN Flag enabled in the
kernel? This is an experimental TCP flag and some firewalls don't
know about it. (cf. eg. http://www.aplawrence.com/Linux/ecn.html)
Try
cat /proc/sys/net/ipv4/tcp_ecn
If you get the answer "1", try to set it back with
echo "0" > /proc/sys/net/ipv4/tcp_ecn
All that said with the assumption that you have the correct public
ip address on your linux box, that 193.29.247.1 is your gateway,
that you are allowed to surf without a proxy, and that you can reach
other web sites apart from simpleware.
Cheers, Thomas
>
> Chris
>
> On Tuesday 18 November 2003 11:21, Thomas Gebhardt wrote:
> > Hi,
> >
> > > I'm getting a Connection refused error (Mozilla 1.5, Firebird 0.6.1,
> > > Konquerer 3.1.3, Lynx...) when trying to accesss some sites from my
> > > testing/unstable box, for example http://www.simpleware.co.uk/.
> > >
> > > I assume it might be some network protocol problem because I have no
> > > problem connecting from Win with the same box. Any suggestions?
> >
> > Some information required in order to narrow down the problem:
> >
> > * network connectivity is ok for other sites, eg. http://www.debian.org ?
> > * output of "traceroute http://www.simpleware.co.uk";
> > * output of "route -n" (as root)
> > * "wget http://www.simpleware.co.uk/"; working?
> > * local firewall installed ("iptables -L")
> >
> > It seems that http://www.simpleware.co.uk/ is firewalled and does
> > not reply to an icmp echo request, i.e. ping does not work. Maybe
> > this is a hint.
> >
> > Cheers, Thomas
>
> --
> Dr.-Ing. C. Hurschler
> Bodenstedtstr. 13
> 30173 Hannover
>
>
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