October 28, 2025Oct 28 I wanted to start a minecraft server for me and my friends to play on. I have the server successfully running using Crafty Controller and have forwarded port 25565 on my router.I am trying to expose it to the internet using duck dns but having some issues. For example my friends should be able to connect to the minecraft server from subdomain.duckdns.org:25565. It works occasionally but very infrequently. I am using mcsrvstat.us to verify if it is working or not. almost always the duckdns address doesn't work, but if I put in my public IP address (same one showing in duck dns) as IP:25565 it says the server is online.I'm very confused as to why this isn't working with duck dns. I have had duck dns working flawlessly for over 2 years for my wireguard vpn which still works.Looking for any help on this or if there is a better way to approach the problem!
October 31, 2025Oct 31 sounds like your ISP is using CGnat. meaning you have no forward facing Public IP.https://www.youtube.com/watch?v=eIpR5ZBCF_g
November 25, 2025Nov 25 Author Sorry for the late reply. I watched that video and confirmed that I do not have CGNAT. I do have a forward facing IP and can access the minecraft server all the time on the IP:Port, but only sometimes on subdomain.DuckDNS.org:Port. I still haven't solved this.
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