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CHAPTER
2-1
Cisco ASDM User Guide
OL-16647-01
2
Introduction to the Security Appliance
The security appliance combines advanced stateful firewall and VPN concentrator functionality in one
device, and for some models, an integrated intrusion prevention module called the AIP SSM or an
integrated content security and control module called the CSC SSM. The security appliance includes
many advanced features, such as multiple security contexts (similar to virtualized firewalls), transparent
(Layer 2) firewall or routed (Layer 3) firewall operation, advanced inspection engines, IPSec and
clientless SSL support, and many more features. See Appendix A, “Feature Licenses,” for a list of
supported platforms and features.
Note The Cisco PIX 501 and PIX 506E security appliances are not supported.
This chapter includes the following sections:
• New Features by Platform Release, page 2-1
• Firewall Functional Overview, page 2-16
• VPN Functional Overview, page 2-20
• Security Context Overview, page 2-20
New Features by Platform Release
This section lists the new features available in each supported platform release. Because ASDM supports
multiple platform releases, and this guide includes features for all releases, you should refer to these
sections to determine if a feature is in your release. This section includes the following topics:
• New Features in Version 8.1(2), page 2-1
• New Features in Version 8.1(1), page 2-4
• New Features in Version 8.0(4), page 2-5
• New Features in Version 8.0(3), page 2-9
• New Features in Version 8.0(2), page 2-10
New Features in Version 8.1(2)