[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: firewalls and MTU - identifying problem if any

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?

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.


Reply to: