Am Freitag, den 22.10.2010, 23:38 +0100 schrieb Adam Hardy: > >> I have a small LAN at home connected up to the net via a DSL modem on a > >> gateway > >> machine running lenny and iptables. > >> > >> I have a problem with some software running on a windows machine on the > >> LAN > >> where the company who wrote the sofware say that there must be something > >> wrong > >> with my internet connection, but can't help any further. > > > > You can set a log-target in your firewall for these windows mashine, so > > you can see what connection the mashine want to do. > > I think on > > > > iptables -A FORWARD -s <windows-IP> -o <DSL-device> \ > > -m state --state NEW -j LOG --log-prefix 'WIN-LOG: ' > > I figured I could do that but the amount of traffic going through from this > software is huge. Is there some sort of app out there that takes iptables > output > and allows you to sort & filter it?
This rule logs only the first paket from new conections. So i think its log not to many. But you can test wiresharke for sniffing. > Alternatively I thought it would be much easier just to find out what the > test > is using ping or something to establish whether PMTU works properly. > > By the way, it's a PPPoA connection, not PPPoE. I think this is normal for > the UK. Ooops, sorry, my fault. The MTU for PPPoA is 1472. A ATM-frame is allways 64 byte. So the ethernet-frame must divisible by 64 byte without a rest (23 x 64 = 1472). PPPoE take a 8 byte-header, so the MTU for PPPoE is 1492. > Regards > Adam Sascha -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
