connection issues

[Dongwu Zeng]

It seems to me that the problem is related with iptables. Are you sure you
have stopped it? If it¹s completely stopped, you should be able to unload
all the iptables related kernel modules. I would also check routing tables,
just to make sure it still looks good.

Dongwu

On 6/20/08 11:00 AM, "Oluwagbenga Shobowale" <gshobowale at nextworksltd.com>
wrote:

> Hi,
> Can anyone help me with this issue? I have a redhat box that  connects to the
> internet, hence it acts as a router. This server runs sendmail, squid, pop3,
> samba etc..and all worked well at least before now.
> However, recently it just stop working... When I logon locally to the machine
> I can surf the internet, however other computers linux or windows can¹t
> connect to any of its services. However, I can ping and it responds back...
> For example, on the server, I run an nslookup on any domain it get resolved,
> however it does not work from any of the clients connected to it. I stop
> iptables to test ..still it does not work. I ran tcpdump on port 53 and I see
> traffic going in but the server does not respond with the answer. Same goes
> for ssh and other services. At the end I get the amount of filters passed and
> zero for the kernel. Hence I think traffic is getting into the kernel but its
> not passing it back out.
>  
> Can someone help with this problem? Should I do a fresh installation?
> Thanks
> 
> 
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