AudioCodes Mediant 1000 User Manual page 330

Parameter
[SIPInterface_TCPKeepaliveE
nable]
Used By Routing Server
used-by-routing-server
[SIPInterface_UsedByRouting
Server]
Classification
Classification Failure
Response Type
classification_fail_response_ty
pe
[SIPInterface_ClassificationFa
ilureResponseType]
Pre Classification
Manipulation Set ID
preclassification-manset
[SIPInterface_PreClassificatio
nManipulationSet]
User's Manual
check that the connection to the IP entity is available.

[0] Disable (default)

[1] Enable
Note: To configure TCP keepalive, use the following ini file
parameters: TCPKeepAliveTime, TCPKeepAliveInterval, and
TCPKeepAliveRetry.
Enables the SIP Interface to be used by a third-party routing server
for call routing decisions.

[0] Not Used (default)

[1] Used
For more information on the third-party routing server feature, see
Centralized Third-Party Routing Server on page 269.
Defines the SIP response code that the device sends if a received
SIP request (OPTIONS, REGISTER, or INVITE) fails the SBC
Classification process.
The valid value can be a SIP response code from 400 through 699,
or it can be set to 0 to not send any response at all. The default
response code is 500 (Server Internal Error).
This feature is important for preventing Denial of Service (DoS)
attacks, typically initiated from the WAN. Malicious attackers can use
SIP scanners to detect ports used by SIP devices. These scanners
scan devices by sending UDP packets containing a SIP request to a
range of specified IP addresses, listing those that return a valid SIP
response. Once the scanner finds a device that supports SIP, it
extracts information from the response and identifies the type of
device (IP address and name) and can execute DoS attacks. A way
to defend the device against such attacks is to not send a SIP reject
response to these unclassified "calls" so that the attacker assumes
that no device exists at such an IP address and port.
Note:

The parameter is applicable only if you configure the device to
reject unclassified calls, which is done using the 'Unclassified
Calls' parameter (see Configuring Classification Rules on page
647).

The parameter is applicable only to the SBC application.
Assigns a Message Manipulation Set ID to the SIP Interface. This
lets you apply SIP message manipulation rules on incoming SIP
initiating-dialog request messages (not in-dialog), received on this
SIP Interface, prior to the Classification process.
By default, no Message Manipulation Set ID is defined.
To configure Message Manipulation rules, see Configuring SIP
Message Manipulation on page 368.
Note:

The Message Manipulation Set assigned to a SIP Interface that is
associated with an outgoing call, is ignored. Only the Message
Manipulation Set assigned to the associated IP Group is applied
to the outgoing call.

If both the SIP Interface and IP Group associated with the
incoming call are assigned a Message Manipulation Set, the one
330
Mediant 1000B Gateway & E-SBC
Description
Document #: LTRT-27045