The good book to read for (in my opinion) great IPSec coverage is "Enhanced IP Services For Cisco Networks" by Donald C. Lee - ISBN 1-57870-106-6
""Hussam Adili"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Dear All, > > I have a question about IPsec tunnel mode. As I understood that it will > encrypt the original packet with its IP header and it will use another > IP header (the o/p interface address header) to route the packet over > the Internet (any open network). > > Does this mean that the source address can be a non-routerable IP > address and it can reach the destination address (which is also > non-routable) through the IPsec tunnel ? Or, for such senario we need to > use GRE tunnel first between the non-routable network addresses , then > encrypt using IPsec? > > Your help is appreciated > - > Regards > Hussam Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=24069&t=24020 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]