Hi Ariel,
I understand you. But again, before getting into the absolutely new world of
Cisco devices I would recommend you to to check if all your units have the
latest software, and upgrade if necessary.
R9100 4.11.3
4553 & 4541 5.4.1R0
3447NWG 7.5.1R4
If you still have a problem, I would recommend you to look at Cisco PIX
firewall instead or Cisco router. It works better with VPN connections than
the router (nothing wrong with a router either). Since you do not need to
have a various WAN modules, PIX would be better choice.
I would suggest to look at Cisco PIX 506 Firewall. The list price is $1395,
but if you will find a right Cisco distributor, you can get up to 35-37%
discount. Netopia website has a few Configuration Guides how to establish a
VPN tunnel between Netopia and Cisco PIX. As a future expansion I would
recommend you to replace all your Netopia routers with a Cisco PIX
firewalls. For a small office you can buy Cisco PIX 501 for $995 list price.
Though you will need to have external DSL modems.
Theoretically you can get the same scenario using a Cisco routers (for
example, Cisco 1800-series for your central office, and 800-series for youre
remote offices).
Good luck,
Mike
www.ciscoheadsetadapter.com