My company has created a network topology where we have 2 firewalls. The external one is a DrayTek and the internal one is a Cisco ASA. We also have a dmz connected to the ASA.
The DrayTek public IP address is not a private address. The internal is private 192.168.0.1. The ASA external IP is 192.168.0.2 and the internal is 192.168.1.1.
I am new to VPNs so can a VPN be connected directly to the ASA or does it have to be connected to the external firewall (DrayTek).