How to close a port

[chiPersei]

I ran the SG online port scanner and found one open port: TCP7676. This is on a Zyxel PK5001z Modem/Router combo through Centurylink. I'd feel safer if I could close it but I didn't see an obvious way to do this while perusing the modem setup gui. Hopefully it's in there somewhere and I just haven't stumbled upon it yet. Or... maybe it's a setting in the Win10 Firewall? I don't have a 3rd party firewall.

I generally don't mess with this stuff and probably shouldn't have run the scanner. ;-) However, now that I have, and an open port was found, it's going to bug be till it's closed. Any ideas?

Thank you.

[YeOldeStonecat]

Zyxels have that port reserved for WAN management by the ISP.

[chiPersei]

Zyxels have that port reserved for WAN management by the ISP.

Thank you Stonecat! I feel much better. Now back to my oblivious sense of security. ;-)

[josenguyen]

Zyxels have that port reserved for WAN management by the ISP.

Thanks!