Re: networking crash suddenly in my home LAN
Andrew Sackville-West <andrew@farwestbilliards.com> writes:
> On Wed, Jul 23, 2008 at 02:35:31PM +0200, Csanyi Pal wrote:
>> Andrei Popescu <andreimpopescu@gmail.com> writes:
>>
>> > On Wed,23.Jul.08, 13:31:13, Csányi Pál wrote:
>> >> I have at home a small LAN with Debian GNU/Linux Etch boxes.
>> >>
>> >> The gateway/router can to access the internet but server and desktop
>> >> can't.
>> >>
>> >> I have setup shorewall (iptables) on every three system and so far it
>> >> works but today it works not.
>> >>
>> >> I tried with command 'shorewall clear' to clear firewall but still
>> >> can't reach internet from server and desktop box.
>> >>
>> >> What could cause this behavior and how can I solve this problem?
>> >
>> > Can the server and desktop access the gateway? Can they access each
>> > other?
>>
>> Yes, I can to access gateway and server with SSH from desktop, and
>> from server the gateway again with SSH.
>>
>> >From desktop I can to open web page on my apache web server, but only
>> with IP address: 192.168.2.100. If I try to access it with FQDN:
>> csanyi-pal.info then I can't open it.
>>
>> > Posting your entire shorewall config could be a bit much, but maybe you
>> > know *exactly* what you changed from the default config and could post
>> > here.
>>
>> Like I sed this problem is still here if I clear the iptables with
>> 'shorewall clear' command. So I think this is not shorewall issue.
>>
>> I think that that this is a network setup problem.. but I don't
>> understand that that I don't changed anything but the problem came up
>> today.
>
> please provide us the output of
>
> /sbin/route
>
> when executed on the gateway machine.
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
91.102.231.32 * 255.255.255.240 U 0 0 0 eth2
192.168.2.0 * 255.255.255.0 U 0 0 0 eth1
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
default 46-231-102-91.r 0.0.0.0 UG 0 0 0 eth2
> Also check the contents of /etc/resolv.conf on all your machines.
gateway:
nameserver 62.108.117.6
nameserver 213.244.255.2
desktop:
search csanyi-pal.info
nameserver 62.108.117.6
nameserver 213.244.255.2
server:
search csanyi-pal.info
nameserver 62.108.117.6
nameserver 213.244.255.2
--
Regards, Paul Csanyi
http://www.freewebs.com/csanyi-pal/index.htm
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