CCNP Security VPN FAQ: Cisco VPN 3000 Concentrator Series Hardware Overview Question. What models are available in the Cisco VPN 3000 Concentrator Series? Answer: Five models are available in the Cisco VPN 3000 Concentrator Series: VPN 3005, VPN 3015, VPN 3030, VPN 3060, and VPN 3080. Question. What is the maximum number of simultaneous sessions that can be supported on … [Read more...]