is comcast now blocking port 443? Just got a new modem installed and now my POS system cant talk on port 443.
I use ShieldsUp! to see what ports are blocked from the Internet.
They don't block 443. Here's the list of what they do block;
Check your router's firewall config / port forwarding settings.
Bear in mind that a server had to actually be listening on that port at the time that test is run in order for it to appear as being "open".
i have a computer with all ports open and it still says blocked. Also the modem/router is port forwarding 443 to that specific computer. ive even had a comcast rep check and make sure. Still blocked