nntps ports through firewall

[Bill Tangren]

I run an nntp server (inn), on a RHEL ES4 machine, behind a firewall 
(that I don't control). I have configured the server to accept secure 
(SSL) connections on port 563. Access to this server on this port behind 
the firewall works fine. I asked the firewall admin to open port 563 for 
nntps traffic. He opened port 563 for tcp traffic only. From outside the 
firewall, I cannot get access to the news server.

Does anyone know if it is necessary to allow udp traffic as well for inn 
to work over SSL?

Thanks!
Bill Tangren