On Wed, 1 Mar 2000, Franz, Joseph wrote:
> What port(s) does IPSEC use? I've learned that VPN-like services use UDP,
> but is there a particular port that IPSEC uses; any recommendations on which
> port(s) to use?
The IPSEC services themselves, AH and ESP, are transport protocols, with
no concept of ports. (They are peers of TCP or UDP, not clients of them.)
The IKE key-negotiation protocol uses UDP port 500.
Henry Spencer
henry@spsystems.net