I have two PCs (RH 7.2) linked via ethernet. One has a modem to dialup
an ISP using pppd.
I use a nameserver and masquerading (iptables) so the internal host has
access to the internet.
Everything works fine so far when I dial out.
But when I try to send data larger than a few KiloBytes, no matter from
which host or which service (ftp, email), the transmission of packets
slows down and finally dies.
Does anyone have an idea where to look for the cause?
It usually dies after arund 11-15 KB, no collisions, no dropped packets.
on any interface.
The default route is set, MTU is set to 1500. DNS works fine, I can see
anything and download as much as I want.
Only sending dies off.
I would be grateful for suggestions on the issue. Thanks in advance.