Few questions.

I want to move my servers on freebsd from linux and I need few information regarding freebsd compatibilities. 1. What is the current status of freebsd compatibility with Java. 2. What is the current status of freebsd compatibility with MySQL. 3. What is the current status of freebsd compatibility

ssh not working behind firewall

I am using freebsd 5.4 stable. SSH is working fine in normal environment but as soon i plug a firewall in front of freebsd box ssh stop working. I have allowed tcp 22 for my freebsd box and the rule is working if I replace the machine to linux box but dont know why ssh is not working on freebsd. i