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I would like to access the kerberos KDC server on my desktop from a cloud server. I cannot use normal port forwarding because I am behind a CGNAT. Apparently PCP is the answer.
How do I install PCP-client software on my desktop and/or router?
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I don't think the CGNAT supports PCP - this is a dead end.
kerberos KDC server on my desktop
This sounds not correct by design, I suggest you rethink your technical approach, e.g. put the KDB service on the cloud server.
If this is not an option for you, I recommend you read into VPN, and connect both machine via a secure VPN.
https://wiki.archlinux.org/title/Catego … te_Network
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