If you’ve ever wondered what UDP port is used for IKE traffic from a VPN client to server, you’re in the right place. Keep reading to find out!
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Introduction
The purpose of this document is to answer the common question, “What UDP port is used for IKE traffic from VPN Client to Server?”
IKE uses UDP port 500 for phase 1 negotiations and UDP port 4500 for phase 2.
UDP port 500
UDP port 500 is used for IKE traffic from VPN client to server.
UDP port 4500
UDP port 4500 is used for IKE traffic from VPN client to server.
Conclusion
The conclusion is that UDP port 500 is used for IKE traffic from VPN Client to Server.