davidw1234 wrote:... I really don't know how safe it is.
It is not! This way intruders have access to all java programs on your Mac. However it is better than no firewall at all
Also make sure that TCP port 8895 and UDP 1900 are open in your firewall." sounds easy, but I found it tricky to follow on Mac OS X!!!
You have to use pf (Packet Filter) firewall which is disabled by default in OS X. To use it you need:
1. (optional) disable application firewall
2. allow ports in /etc/pf.conf for default network services like DNS or file sharing
3. allow any other ports which are required by your applications
4. allow Serviio ports (tcp 8895 and udp 1900)
5. start PF firewall
So there is quite a work to do and if you are not familiar with PF firewall it may be difficult. I recommend to use and customize somebody's else tested pf rules. I am working on mine and if you are interested I can put them here later, after testing?
Regards,
andrusz