Re:One word: PIX (Score 2, Informative)

Be carefull with any Cisco PIX devices, whilst they work well and run the same code accross the product range (mostly) licensing and maintenance can be a pain. Funtionality is also dependant upon product, i.e. Failover is not available at the bottom end.

Maintenance is especcaly irritating when it comes to the Cisco VPN client, you cannot obtain a legitimate copy from the Cisco website, without a maintenence agreement. And there are fairly frequent updates.