Cisco ASA Series Cli Configuration Manual page 1068

Licensing Requirements for Service Policies
class ftp
Feature Matching for Multiple Service Policies
For TCP and UDP traffic (and ICMP when you enable stateful ICMP inspection), service policies
operate on traffic flows, and not just individual packets. If traffic is part of an existing connection that
matches a feature in a policy on one interface, that traffic flow cannot also match the same feature in a
policy on another interface; only the first policy is used.
For example, if HTTP traffic matches a policy on the inside interface to inspect HTTP traffic, and you
have a separate policy on the outside interface for HTTP inspection, then that traffic is not also inspected
on the egress of the outside interface. Similarly, the return traffic for that connection will not be
inspected by the ingress policy of the outside interface, nor by the egress policy of the inside interface.
For traffic that is not treated as a flow, for example ICMP when you do not enable stateful ICMP
inspection, returning traffic can match a different policy map on the returning interface. For example, if
you configure IPS on the inside and outside interfaces, but the inside policy uses virtual sensor 1 while
the outside policy uses virtual sensor 2, then a non-stateful Ping will match virtual sensor 1 outbound,
but will match virtual sensor 2 inbound.
Licensing Requirements for Service Policies
Model License Requirement
All models Base License.
Guidelines and Limitations
This section includes the guidelines and limitations for this feature.
Context Mode Guidelines
Supported in single and multiple context mode.
Firewall Mode Guidelines
Supported in routed and transparent firewall mode.
IPv6 Guidelines
Supports IPv6 for the following features:
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Cisco ASA Series CLI Configuration Guide
1-6
inspect ftp
Application inspection for DNS, FTP, HTTP, ICMP, ScanSafe, SIP, SMTP, IPsec-pass-thru, and
IPv6.
ASA IPS
ASA CX
NetFlow Secure Event Logging filtering
TCP and UDP connection limits and timeouts, TCP sequence number randomization
Chapter 1 Configuring a Service Policy Using the Modular Policy Framework