PIX 515E
The 515E replaced the 515 in May 2002. It has a higher-performing 433MHz
Intel Celeron, accretion abject firewall performance. Another new advantage is the
ability to offload the addition amount of DES ciphering from the OS to a dedicated
VPN accelerator agenda (VAC), carrying up to 63Mbps 3DES throughput
and 2,000 IPsec tunnels. Licensing is similar: the belted authorization banned you to
three interfaces and no failover, admitting the complete authorization has the memory
upgrade, the VAC, and up to six interfaces.