ipfw rules for connect port 993

[Petr Chocholáč]

Hello,

I would like to ask you for advice. I can not connect to imap.gmail.com 
on port 993 from my local network. My LAN is behind freeBSD server with 
IPFW. Server has two network cards rl0=Internet and 
re0=LAN(10.0.0.0/16). Tcpdump on re0 shows three SYN packets without 
answers.  What rules should i create?

I tried someting like this, without success:
#ipfw add 01500 allow ip from 10.0.0.0/16 to any in via re0



Thank you very much for any advice and your patience

Petr Chocholáč
Brno, Czech Republic