On Thu, Jul 24, 2008 at 09:52:22AM +0200, Csanyi Pal wrote: > Alex Samad <alex@samad.com.au> writes: > > > On Wed, Jul 23, 2008 at 08:02:58PM +0200, Csanyi Pal wrote: > >> Andrew Sackville-West <andrew@farwestbilliards.com> writes: [snip] > > This is working from gateway. I'm trying it from LAN behind the > gateway/firewall, from desktop machine. If this is working from the gateway then I would presume that the problem is at the gateway, for you local LAN clients, all their traffic has to go through the gateway > > tcpdump now shows traffic, when I ping www.google.com from desktop > machine. > > I run on gateway command: > sudo tcpdump -pni eth2 port 53 or host 62.108.117.6 > > listening on eth2, link-type EN10MB (Ethernet), capture size 96 bytes > 09:42:10.158205 IP 91.102.227.98.46197 > 62.108.117.6.53: 1661+ A? > www.google.com. (32) > 09:42:15.153786 IP 91.102.227.98.50360 > 213.244.255.2.53: 1661+ A? > www.google.com. (32) > 09:42:20.153200 IP 91.102.227.98.46197 > 62.108.117.6.53: 1661+ A? > www.google.com. (32) > 09:42:25.152719 IP 91.102.227.98.50360 > 213.244.255.2.53: 1661+ A? > www.google.com. (32) > > 4 packets captured > 4 packets received by filter > 0 packets dropped by kernel > I presume 91.102.227.98 is your public Internet address (eth2 on the gateway), you don't see any return packets, which is strange ? If you do the same test on the gateway you see the return packets ? > but I get error message on the command line on desktop (LAN): > $ ping www.google.com > ping: unknown host www.google.com > > tcpdump now shows traffic, when I 'ping 62.108.117.6' from desktop > machine. > > I run the command on gateway: > sudo tcpdump -pni eth2 > > 09:46:56.951551 IP 91.102.227.98 > 62.108.117.6: ICMP echo request, id > 63003, seq 10, length 64 > 09:46:57.083584 IP 91.102.227.98.50927 > 213.244.255.2.53: > 58759+[|domain] > 09:46:57.951463 IP 91.102.227.98 > 62.108.117.6: ICMP echo request, id > 63003, seq 11, length 64 > 09:46:58.951366 IP 91.102.227.98 > 62.108.117.6: ICMP echo request, id > 63003, seq 12, length 64 again no return packets > > but at the command line on desktop machine I get nothing: > > $ ping 62.108.117.6 > PING 62.108.117.6 (62.108.117.6) 56(84) bytes of data. > > Then I cancel it with Ctrl-C: > > --- 62.108.117.6 ping statistics --- > 13 packets transmitted, 0 received, 100% packet loss, time 12008ms > > Well, I think that that something is wrong in my network setup, but > what? can you supply the output of ip a (shows your ip address) ip r (shows the routing information) iptables -nvL -t nat (show the iptables / firewall information for natting) > > -- > Regards, Paul Csanyi > http://www.freewebs.com/csanyi-pal/index.htm > > > -- > To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org > > -- World tensions have, if anything, increased in the quarter century since H. G. Wells uttered his glum warning: "There is no more evil thing on earth than race prejudice, none at all. I write deliberately -- it is the worst single thing in life now. It justifies and holds together more baseness, cruelty and abomination than any other sort of error in the world." -- Sydney Harris
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