Network Configuring on Hyrid /Core for Slingbox?

[Handydan58]

I currently have Linux MCE working. Nice. I have a slingbox to view remotely at work or travel. Currently can access slingbox internally within house wirelessly OK. But need help on firewall settings to access from outside my network. I was using port 443 to bypass work firewall limitation instead of default port 5001. But core will not allow access remotely. Was working with wireless router before I setup hybrid/core with 2 LAN wire and DHCP and made wireless a bridge and receives DHCP from Core. How do I configure firewall on web admin page. Any suggustions. Thanks.