Objective: Troubleshoot a sample problem and propose solutions to correct the problem.
Description: You configured a VPN to use IPSec in its most secure mode – using ESP with tunnel mode. However, you encounter problems with the firewall, which is positioned between the VPN and the internal network. The firewall ends up dropping a substantial percentage of the packets that are terminated by the VPN device. Troubleshoot the situation by answering the following questions:
- What could be causing the firewall to fail to process VPN traffic?
- How could you solve the problem?