I have 4 remote sites that are connected to a central site via VPN tunnels. I installed one Cisco ASA 5505 at a remote site to improve reliability. The central site was also using a Linksys until yesterday. Adding these Cisco devices was done due to complaints about unreliable connections to a terminal server.
All remote sites and the central site use either cable or DSL for their internet connections.
I am still having trouble with tunnels failing at the remote sites. Would this Cisco device use any more bandwidth than Linksys devices? I would not imagine so as the protocols are the same.
Is there anything we can change to improve or optimize the VPN tunnels to be more reliable? Is it common for VPN tunnels to drop on a regular basis using DSL and cable?