RTSP

RTSP is an application-level communication protocol for media streaming systems. It allows monitoring a media server remotely, offering typical audio/video player features such as “play” and “pause” and allows time-based access.

Automatically detect and inspect the protocol

If the protocol is enabled, this option allows corresponding traffic detected and authorized by a filter rule with an IPS or IDS inspection level and that does not use the default port to be inspected at the application level. If this option is not selected, protocol analysis is limited to the transport layer (TCP/UDP).

RTSP commands

Allowed RTSP commands tab

Add	Inserts a command in the list of additional commands that require authorization.
Delete	Select the command to remove from the list and click on Delete.

Prohibited RTSP commands tab

Add	Inserts a command to the list of additional prohibited commands.
Delete	Select the command to remove from the list and click on Delete.

Maximum size of elements (bytes)

RTSP requests	Maximum size of the request and the response. Allows managing memory overflow.
RTSP header	Maximum size of the header. Allows managing memory overflow.
SDP protocol	Maximum size of an SDP line. Allows managing memory overflow.
Content-Type	Maximum size of the « Content-Type » header.

RTSP session settings

Max no. of pending requests	Maximum number of requests without responses in a single RTSP session.
Session timeout (seconds)	Duration of a RTSP session in seconds.
Request timeout (seconds)	Duration of a RTSP request in seconds.

RTSP features

Allow interleaving	If this option is selected, RTSP will be allowed to encapsulate within its own TCP connection RTP/RTCP protocols used for transporting media and usually based on UDP. This may be necessary when UDP traffic is denied.
Allow error messages with content	This option allows accepting error messages containing additional content, in general in HTML.
Allow renegotiation of media transport settings	If this option is selected , the firewall will allow the update of RTP/RTCP transport parameters during a session.

Support

Disable intrusion prevention	When this option is selected, the scan of the RTSP protocol will be disabled and traffic will be authorized if the filter policy allows it
Log every RTSP query	Enables or disables the logging of SIP requests.