I have installed a number of IP cameras in a remote site and I want to access these cameras from the Main Site. I have static IPs on both sides, I would like to set up a VPN with these to connect the LAN at the remote site and bring it on the LAN of the Main Site. In the main site I have an Cisco ASA 5510. In the remote site I have a normal router which can connect to an L2TP VPN. Is this enough to establish a site to site VPN or I need a VPN router in the remote site also? Should I use the remote access VPN or the Site to Site VPN?