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17-81
User Guide for Cisco Security Manager 4.4
OL-28826-01
Chapter 17 Managing Firewall Inspection Rules
Configuring Protocols and Maps for Inspection
Configuring Skinny Maps
Use the Add or Edit Skinny Map dialog boxes to define Skinny maps for Skinny inspection. A Skinny
policy map lets you change the default configuration values used for Skinny inspection.
Content Type The content type to evaluate as specified in the content-type header
field. You can select one of the following:
• SDP—Matches an SDP SIP content header type.
• Regular Expression, Regular Expression Group—The regular
expression or regular expression group to evaluate. See the
explanation for the Value field for an explanation of these options.
Resource Method The request method you want to inspect:
• ack—Confirms that the client has received a final response to an
INVITE request.
• bye—Terminates a call and can be sent by either the caller or the
called party.
• cancel—Cancels any pending searches but does not terminate a call
that has already been accepted.
• info—Communicates mid-session signaling information along the
signaling path for the call.
• invite—Indicates a user or service is being invited to participate in
a call session.
• message—Sends instant messages where each message is
independent of any other message.
• notify—Notifies a SIP node that an event which has been requested
by an earlier SUBSCRIBE method has occurred.
• options—Queries the capabilities of servers.
• prack—Provisional response acknowledgment.
• refer—Requests that the recipient REFER to a resource provided
in the request.
• register—Registers the address listed in the To header field with a
SIP server.
• subscribe—Requests notification of an event or set of events at a
later time.
• unknown—Uses a nonstandard extension that could have unknown
security impacts on the network.
• update—Permits a client to update parameters of a session but has
no impact on the state of a dialog.
Table 17-47 SIP Class and Policy Maps Add and Edit Match Condition and Action Dialog Boxes
Element Description