If you’re wondering what UDP port is used for IKE traffic from VPN clients to servers, you’re in the right place. Here, we’ll explain what IKE is and why you need it for your VPN connection.
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UDP port 500 is used for IKE traffic from a VPN client to server.
The UDP Port Used for IKE Traffic From VPN Client to Server
UDP port 500 is used for IKE traffic from VPN Client to server.
The IKE Protocol
UDP port 500 is used for IKE traffic. IKE uses UDP because it needs to be able to traverse NAT devices.
From the above, we can see that the IKE traffic from the VPN client to the server uses UDP port 500.