[App_rpt-users] RTCM question

Got my RTCM working as I'd like. but had a question. It will be up at repeater site, one that has its own internet connectivity. That internet is *NOT* on my lan, it's on the public internet. I understand that I need to poke a hole in my firewall for the rtcm udp port, but does the repeater site also need a hole poked in its (I'm not 100% sure if it's natted or not, but suspect it is. The docs just mention the *server* needs, but it suggests that the RTCM does *not* need any specific incoming port access. Figured I'd check with those that may know. Thanks in advance, Alan