Block Windows Server 2012 R2 Essentials from router uPNP

[BlizzardX]

Hello,

I'm playing with anywhere access, but my single static ip is taken up by my load balancer for my email servers (load balancer is not yet ipv6 ready). I want to enable anywhere access but block the ability for it to set, via uPNP, its own settings in the router as that forwards the same ports that the load balancer uses to try and force it to use ipv6, which I have a static /56.

Does anybody know what firewall setting would keep upnp up and running for network discovery but would stop it from doing anything on the routers ip?

Thanks,

Chris

 

[BlizzardX]

It uses UDP 1900, so you could try a windows firewall outbound rule blocking communication to the router's internal IP on that port?

Thanks Paradigm, I thought I could probably do that but didn't know which port!