[Koha] CSF Firewall blocking Z39.50 SRU Search

Hello, When enabling CSF firewall, I get server connection failure in Z39.50/SRU search. I've tried allowing several ports in csf config file as I read in some articles around the web, but nothing seems to work. Thanks for any help. Best regards, Diva -- D'Almeida *final art since 1997*divalmeida.com S E T Ú B A L . P O R T U G A L