Cisco PIX 500 Series Configuration Manual page 980

Supported Platforms and Feature Licenses
Table A-3 ASA 5520 Adaptive Security Appliance License Features
ASA 5520
Users, concurrent
Security Contexts
1
VPN Sessions
Max. IPSec Sessions
Max. WebVPN
Sessions
VPN Load Balancing
TLS Proxy for SIP and
Skinny Inspection
Failover
GTP/GPRS
Max. VLANs
Concurrent Firewall Conns
Max. Physical Interfaces
Encryption
Min. RAM
1. Although the maximum IPSec and WebVPN sessions add up to more than the maximum VPN sessions, the combined sessions should not exceed the VPN
session limit. If you exceed the maximum VPN sessions, you can overload the security appliance, so be sure to size your network appropriately.
2. The concurrent firewall connections are based on a traffic mix of 80% TCP and 20% UDP, with 1 host and 1 dynamic translation for every 4 connections.
Cisco Security Appliance Command Line Configuration Guide
A-4
Base License
Unlimited
2 Optional Licenses:
5 10
750 combined IPSec and WebVPN
750
2 Optional Licenses:
10 25
Supported
Supported
Active/Standby or Active/Active
None Optional license: Enabled
150
2
280 K
Unlimited
Base (DES) Optional license: Strong (3DES/AES)
512 MB (default)
Unlimited
20
50 100 250 500
Appendix A Feature Licenses and Specifications
750
OL-12172-03