Blocking Port 21 for Residential Connection
I spoke with a rep who said COX can't block ports on their end, yet there are multiple articles about how they definitely block ports for everyone's protection. I know COX is blocking my port 21, wh...
Forum Discussion
Ports are blocked on the modem itself.
https://www.cox.com/residential/support/internet-ports-blocked-or-restricted-by-cox.html
Port 21 isn't blocked on the modem. if you are using a non cox router, verify it's not blocked on the router.
https://canyouseeme.org
Ensure you temporarily turn off your firewall or IT will block the test.
Also - https://www.grc.com/default.htm shields up testing for firewall.
verify it's not blocked on the router.
I think the best/easiest way to confirm that is to bypass the router and connect direct to the modem. Going through logs and/or websites to test isn't going to work all the time IMO.
