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Forum Discussion

5_D's avatar
5_D
Aspirant
Nov 15, 2025

VPN Ports Closed -> VPN Timeout

Trying to setup VPN on RBR50 router connected to SB1683 cable modem. Testing VPN connection on OpenVPN IOS via cellular. Public IP matches that of router settings. Every time testing the VPN it times...
rbk50
StephenB's avatar
StephenB
Guru - Experienced User
Nov 15, 2025
5_D wrote:

Xfinity

Is the router public IP address in the range of 100.64.0.0 to 100.127.255.255?

 

If so, then Xfinity has changed your public IP to use carrier-grade NAT.

 

5_D's avatar
5_D
Aspirant
Nov 15, 2025

No