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VNC Server: Too many authentication failures

th flag

I am having a huge problem accessing my server through VNC as I get "Too many authentication failures" way too often. At first I was solving it by connecting through SSH and restarting the VNC server, but this is not an option anymore because I am training Deep Learning models that can take days to finish, and by restarting the server, the training crashes too. I've also tried the trick with resetting the password of the vncserver, but I still get the message, and I couldn't come with any other solution.

So my question is, is there a way to workaround this problem without killing or restarting the vnc server.

P.S. I am using TightVNCServer if it makes some difference.

hr flag
Is the VNC server port open to the public internet? if so, it's probably being attacked by script kiddies / bots. Make sure to firewall it and/or configure it to only listen on the looopback interface and then connect to it only via an SSH tunnel.
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