O'Reilly logo

Windows Server® 2008 TCP/IP Protocols and Services by Joseph Davies

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

ISAKMP Message Structure

ISAKMP messages are sent as the payload of UDP messages using UDP port 500. Figure 18-8 shows the format of an ISAKMP message.

An ISAKMP message

Figure 18-8. An ISAKMP message

The ISAKMP message consists of an ISAKMP header and one or more ISAKMP payloads. The ISAKMP payloads contain negotiation information and are encrypted for most ISAKMP messages. The encryption protects the negotiation from being viewed by malicious users who are capturing ISAKMP traffic. The encrypted portions of ISAKMP messages cannot be viewed with Network Monitor. ISAKMP is defined in RFC 2408.

ISAKMP Header

The ISAKMP header is a standard header that is present for all ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required