I have several users that can connect to our VPN ussing IPSec on a 5505. I have one user that can connect, but cannot see the internal network. This user is using DSL with a speedstream 4100. However, I have another user with the same setup that can connect and see the internal network. The logs in ASDM show the connection, but don't seem to show any errors when trying to access internal. Any help will be greatly appreciated. Thanks, Bill.
No it does not. It just negotiates to see if there is any NAT in the transit path (by using HASH values), if the hashes are not equal it encapsulates the IPSEC traffic inside UDP 4500. The VPN is still as secure as it is before.
crypto isakmp nat-traversal