[ale] IPFW firewall rules permitting ftp transfers ?

[ccthomas at flash.net (Courtney Thomas)]

I have my firewall going but I am unable to construct a satisfactory
rule pair to permit ftp usage.

Goal: to be able to initiate ftp from any machine ON THE LAN and receive
file transfers as well

I can ping to remote ftp sites OK from lan members but when I try to
initiate an ftp session, there is login, but transfers are blocked. 

If I throw open the firewall there's no problem, of course. 

Also, the Firewall box can transact ftp sessions OK.

Please assume the lan consists of a Class C network of, no more than, 16
machines on 123.45.67.100 - 123.45.67.115.

Anyone got a rule(s) that allow this, using IPFW ?

Grateful as always,

Courtney
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