Currently I have a client using some Linksys routers that support VPN tunnels. They have been using the VPN tunnels to connect remote sites to a central office. They have been rather unstable and I am looking for a cost effective solution that will provide better reliability.
I know that Cisco is likely the route to take, but I would like some recommendations on implementing a cost effective Cisco VPN solution for a central office with 4 remote offices. Each remote office has about 12 users.