Hello there

I'm using a vendor-supplied application on RHEL4 that includes a built-in Tcl webserver. The webserver is working but I cannot access it from any computer other than the host workstation. I suspect that the firewall is blocking ports 8015/8016. I have two questions:

1. How do I open these ports without compromising too much security?
2. Is it possible to open these ports but restrict access to selected IP addressed only?

Thanks.