Domino Server was blocked by RedHat EL 5.1

HCL Domino Domino Forum
1

HI,When I enabled firewall of RedHat EL 5.1, Domino Server 7.0.3 lost connection with Notes 7.0.3 Client for Windows XP Pro! Which ports should be opened for use with Domino Server 7.0.3?

Thanks!