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Hi all.

I guess this isn't stricktly speaking a pure masq question, but at least it
concerns masq. The thing is a friend of mine has a box (that I helped him
setup) between his LAN and his DSL (2mbit) router with a separate NIC for
each. This box is running 2.4.17 and is masquerading/nating his LAN. He's
running an FTP server on his LAN via forwarding rules (iptables).

Now, I know zip about traffic shaping and have had a hard time finding out
whether what he wants done is even possible. I seem to find documents that
assume I'm either Linus or Grandma, but nothing inbetween. What he's looking
for is to ensure the FTP doesn't suck up all available bandwidth. The crude
theory of it would be something to ensure certain ports or traffic types
gets a certain bandwidth share. Something along the lines of "if port xxx is
in use limit port yyy to 123 bandwidth" or "if port xxx is in use guarantee
port xxx gets 123 bandwidth".

As far as I've understood, this should be right up the alley of Linux's
traffic shaping. Or am I wrong? If I'm right, can anybody point me to a
comprehensive site that doesn't assume I'm a rocket scientist to get
started?

PS: My iptables knowledge is also fairly limited. Just about enough to get
that box doing what it's doing to begin with.

Thanks in advance. And sorry for being somewhat off topic.



--
Frode


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