Ports for Java based Remote Console

[Robert_Haas]

Hello,

we have a really strange siutation.

Our HP servers are only reachable via Linux machines, that means we only have firefox as webbrowser and therefore we can only use java based remote console because other one is only supported by internet explorer.
I´ve installed java package 6.13 and as browser firefox 3.0.5.
If I´d like to open a java based remote connection, I got a tiemout message after a while.

Our firewall settings are really important, what means that only port 80 and 443 are opened till now.

Could you tell me which port is needed to get access to server with java based remote console?

Thanks a lot.