I had a funky issue that was similar and it turned out that I had the wrong subnet mask on my internet interface. Coincidentally, my network also started with 64. (I think) - the same as google; but because my subnet mask was wrong, I could not see google! -----Original Message----- From: netfilter-admin@xxxxxxxxxxxxxxxxxxx [mailto:netfilter-admin@xxxxxxxxxxxxxxxxxxx] On Behalf Of Rob Verduijn Sent: Monday, July 28, 2003 4:19 PM To: netfilter@xxxxxxxxxxxxxxxxxxx Hi again, I've set my MTU on eth0 eth1 and ppp0 to 1472 Ive been playing around with tcpdump I gave the following command tcpdump -i ppp0 -w dumptcp When I surf to www.redhat.com everything goes wel and I get all kinda output in my file But when I surf to google I get nothing, no output whatsoever. Did I give in the wrong syntax? Regards Rob -----Original Message----- From: netfilter-admin@xxxxxxxxxxxxxxxxxxx [mailto:netfilter-admin@xxxxxxxxxxxxxxxxxxx]On Behalf Of Eric Leblond Sent: vrijdag 18 juli 2003 21:49 To: netfilter@xxxxxxxxxxxxxxxxxxx Subject: Re: rp-l2tpd iptables and rh9 but no google Le ven 18/07/2003 à 21:01, Rob Verduijn a écrit : > Hi there, > > I've got this curious problem with netfilter. > I did > echo 1 > /proc/sys/net/ipv4/ip_forward > > I can ping google so icmp seems to work but I can't surf the web for google. > Neither windows nor linux will work. You may have look to the MTU, with encapsulation in L2TP you loose some bytes. To test try increase your ping size with the -s option. If it is working with -s 1500 then try to look at tcpmss. BR, -- Eric Leblond <eric@xxxxxxxxx>
