Networking Issues are the death of me.

[CriticalXHit]

I'm trying to resolve these Port Forwarding issues.
Things I'm running:

Mac (latest os update)
Comcast xFinity
I looked at the website that has user manuals for routers, but I didn't find my router model listed, so I'm not sure what to do, and I'm afraid I don't know enough about the subject that even if I contacted xfinity support I likely wouldn't be able to give them enough information to help fix the problem.

I got to here but I honestly can't make heads or tails and there's so many topics on the subject I can't seem to figure out which one to follow.

Screen Shot 2017-11-09 at 11.26.06 AM.png

Any advice would be great! Thanks!

[Trenloe]

Set the IPv4 address to the IP address of the GM computer.

Start Port and End Port = 1802.

Remove everything from the IPv6 entry.

Leave the rest as is.

[CriticalXHit]

I can't delete anything in the IPv6 field.

[CriticalXHit]

Set the IPv4 address to the IP address of the GM computer.

Start Port and End Port = 1802.

Remove everything from the IPv6 entry.

Leave the rest as is.

Wait! It worked! Awesome! Thank you!!!

[Trenloe]

Wait! It worked! Awesome! Thank you!!!

No worries. Glad it worked!

[chrisiav]

I also am using a comcast infinity router. I am trying to switch FG to a different computer. Players can connect fine on my old computer. I tried to follow the above advice to open the port but I get an alert that it conflicts with other service. The alert tells me to check port and IP. Is that because I have FG on the other computer? Any ideas on how to make the switch?

[LordEntrails]

You can only have port forwarding set to one computer. So you have to remove your old rule and create a new one. Or change the IP that the rule points to. Or, switch the IPs of your two computers. Whichever makes most sense to you.