Hi
Okay some of these figures don't quite tally up with the data sheet but
1Gbps+ means that the firewll can support over 1Gbp of cleartext throughput (cleartext as opposed to encrypted). the data sheet actually states 1.7Gbps.
95mbps 3des VPN - this may well be the amount of encrypted traffic the pix 535 can support. However with a VPN Accelerator card (VAC / VAC+ ) that figure rises to 10Mbps with VAC and 425Mbps with VAC+.
2000 IPSEC tunnels. The firewall can support 2000 simultaneous IPSEC tunnels, whether these are site-to-site VPN tunnels, remote access vpn tunnels or a combination.
Concurrent connections. At any one time the firewall can support up to 500000 connections simultaneously.
HTH
Jon