3015 concentrator in site-to-site VPN setup

[emma_is_me]

I have a 3015 at our central office with a number of Cisco 800's / 1700's at satellite offices. I've got them up and running with IPSec tunnels using 3DES/SHA and currently pre-shared keys (Thinking about using digi-certs as the number of sites could increase). I've been ploughing through the Safe VPN docco about the question of further security using NIDS and firewalls., and looked at the medium sized scenario.

Has anyone got a similar setup that could enlighten me further on the best way they have found to tighten up security to a safe, but not excessive level ?

[wong34539]

Both NIDS and Firewall are good options for good secuirty, also consider some sort of security for important servers like mail servers by running Host based IDS on them. Also you can add access lists to restrict the resources the users can access.

There are a couple design options on where to place the firewall and IDS in respect to the concentrator, depends on how you really want to use it.