The format of an ESP-processed IP packet varies based on which IPsec transform mode is selected. In transport mode, the header is placed before the ciphered payload, and after the IP header. As such, ...

Setting up an IOS router to utilize IPsec starts with the configuration of the ISAKMP policy and the router's ISAKMP authentication key data. If the router will be peering with only one other ...

The following list and examples use Figure 21 to illustrate the creation of a transform set within IOS: An IPsec transform set defines the IPsec protocol to be used. This could be ESP, AH, or a ...