I inherited a Cisco PIX firewall running IOS 6.3. VPN is configured and working fine however I noticed an issue when logged into VPN. When pinging an internal host with a private IP address, I get the associated public IP address of the server.
For example, when pinging domain.local which should have an IP address of (192.168.1.25) I get a response of 74.x.x.x. Interesting fact is that this only happens for servers which have a static mapping of external IP to internal IP such as Microsoft Exchange.
This is causing issues when trying to resolve internal IP address of my exchange.
When running ipconfig i see the correct DNS server listed. Any direction where to begin would be appreciated.