Network embarassment

[Brian Astill]

It's been a while since I set up a network, and I seem to have forgotten 
something.  How embarassing.  :-* 

I have made the appropriate entries in hosts, left hosts.deny blank, and tried 
blank, ALL: ALL and specific listing of name, address, FQDN in hosts.allow.
Result in every case:  The computers can ping each other successfully, but ftp 
returns "connection denied" whether I try to log on anonymously, as 
user/password or root/password.  Like I said, I have forgotten something.

Either that or there is a default firewall in ubuntu warty I need to bypass.

Help, please!  :-P 

-- 
Regards,
Brian