Pelco DX8016 Not Viewable WAN

So have a DX8016 that is slowly replacing my other DVR so I've been playing with it trying to get everything setup. Problem is now is that I cannot access it remotely. Pelco defaults to using 9002 for the base port. I've forwarded that port on my router and still cannot access it. I've tried mapping it to port 8888 as well which worked for my previous DVR but not luck. The worst part is it's a simple network setup. Router - switch - Pelco. So nothing fancy should be involved. The DVR is perfectly viewable within the LAN and a port scan from the LAN shows those ports open, yet a WAN scan shows nothing. If I reconfigure my router to my old DVR ip and port 8888 it's viewable. Any ideas? Thanks!

If anyone else is having this problem, I finally solved it by disabling IPSec policy on the Pelco. The port is now visible and remote view is working. Not sure if this is the case for all of them but possibly the ISP was blocking it.