> What is the MTU on the firewall interface connected
> to the ADSL ?
> 
> I would have thought that if this was set to 1492,
> then things should sort 
> themselves out quite transparently...
> 

ppp0 is 1492 and its "connected" to eth0 that is 1500,
and eth1 is connected to local net and it is 1500

> 
> You *are* allowing the appropriate ICMP messages
> into / out of / through your 
> firewall box, aren't you ?

Uhmmm, no idea actually, hehe, i just configures it to
reject or accept access on certain ports, not dropping
every package coming that isn't matching a certain
port (hmm, hope anyone understands that sentence). 
Why lock down everything when i know what service that
is on the linux and on ever computer behind it.

/J�rgen

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