a bit of context before my question:
my current setup consists of a comcast-issued gateway (Xfinity Gateway) which i set into 'bridge mode' ... according to comcast it turns the device into just a modem.
i then have my Linksys WRT1200AC plugged into port 1 of the 'gateway' and then an ethernet cable to my PC (from one of the 4 ethernet ports on the WRT1200AC).
here are the internal addresses of each of my devices:
Linksys WRT1200AC: 192.168.1.1
PC (ipconfig): 192.168.1.161
and my external IP: 69.x.x.x
basically, i'm trying to allow external connections access ports i open on my 'external' ip. people are unable to access my gameserver on port 27015 and can't connect.
sites like https://canyouseeme.org/ report back as the port being closed, even if i try to forward it in my LUCI ui.
any thoughts on how i can get this to work through the LUCI ui? i'm running LEDE Reboot 17.01.4.