WCCP Messages

WCCP Messages

When the WCCP service is active on a web cache server it periodically sends a WCCP HERE I AM broadcast or unicast message to the FortiGate unit operating as a WCCP router. This message contains the following information:

  • Web cache identity (the IP address of the web cache server).
  • Service info (the service group to join).


If the information received in the previous message matches what is expected, the FortiGate unit replies with a WCCP I SEE YOU message that contains the following details:

  • Router identity (the FortiGate unit’s IP address.
  • Sent to IP (the web cache IP addresses to which the packets are addressed)

When both ends receive these two messages the connection is established, the service group is formed and the designated web cache is elected.

This entry was posted in FortiGate, FortiOS, FortiOS 5.4 Handbook and tagged , , on by .

About Mike

Michael Pruett, CISSP has a wide range of cyber-security and network engineering expertise. The plethora of vendors that resell hardware but have zero engineering knowledge resulting in the wrong hardware or configuration being deployed is a major pet peeve of Michael's. This site was started in an effort to spread information while providing the option of quality consulting services at a much lower price than Fortinet Professional Services. Owns PacketLlama.Com (Fortinet Hardware Sales) and Office Of The CISO, LLC (Cybersecurity consulting firm).

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