Ports disabled

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Okay, I set up my server, portforward (day 1) and everything works fine. Everyone can connect and stuff. However, on day 2, my ports are blocked (I think) and no matter what port I change to, no one can connect. Day 3 generally works out fine.

Is Comcast blocking my ports or is something wrong with my router?

[hexacyanide]

Comcast does not block ports, however, your local IP address may have changed. If you have rebooted your router, you may have changed your IP entirely. Can you give more details?

[Rigby]

Make sure you setup a static ip address so your ip will not change

[hexacyanide]

Static addresses are not easy to have, and usually cost money.

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Okay, I have a dynamic IP. My IPv4 has not changed. I reportforwarded everything and checked at canyouseeme.org and it still doesn't work.

Also my IP has not changed.

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Hi, sorry for the bump but right now, all of my ports won't work at all at any time anymore. Anyone got ideas? I called my ISP and they said everything looked fine from their end.