Zerotier is running. The network firewall is Sonicwall. No AV on the system and Windows Firewall is off. after the server reboot or service restart we can ping for about a min before all communication stops and cannot reach it anymore. I have no idea what is blocking it as it works for about a min after the system reboot or I restart the Service.
It seems like there’s an IDS or other network traffic filtering system on your network that is misclassifying ZeroTier traffic and blocking it.
I honestly do not see any other traffic filtering system. I have similar setup on other networks but this is happening only on 1 particular network. No IDS on firewall. Enabled Consistent NAT.
That’s all I can think of from your description of the issue. The reason it works for a short time after restarting the service or rebooting is that ZeroTier uses two random ports along side port 9993. These 2 ports change after each reboot. So it works for a little bit on the new ports, and then something starts blocking the traffic.
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