Services - Enhanced DBL Profile

The SBC Core enhanced Dynamic Blacklist (DBL) feature provides the ability to restrict packets and rejects the SIP messages received from endpoints based on the criteria and action, which are provided in a rule. In this way, the SBC is protected from offending or misconfigured/misbehaving endpoints.

The enhanced DBL Profile is configured to contain one or more rules. The profile is then associated with a SIP Trunk Group. The rules contain criteria and action.

• When an endpoint triggers a rule with a blacklist action, all packets from that endpoint are dropped for the effective period. When the timer expires, the entry is removed.
• When an endpoint triggers a rule with a rejectWithResponse action, all SIP requests from that endpoint are rejected with the response configured in the rule for the configured effective period. When the timer expires, the entry is removed.

This SBC enhanced profile supports handling offending events in a flexible way apart from triggers such as  the two consecutive 401s for REGISTER messages, badSipMessage, and endpoint CAC rejection.

To View an Enhanced DBL Profile

On the SBC main screen, navigate to All > Profiles > Services > Enhanced DBL Profile.

The Enhanced DBL Profile window is displayed.

Figure 1: Enhanced DBL Profile window

The parameters displayed in the Enhanced DBL Profile List window are:

Table 1: Enhanced DBL Profile List - Parameter Description

To Edit an Enhanced DBL Profile

To edit an Enhanced DBL Profile, select the profile from the Enhanced DBL Profile List window by clicking the radio button next to it. 

The Edit Selected Enhanced DBL Profile window is displayed. 

Make the necessary changes and click Save to save the changes. To cancel all changes, click Undo Edits.

To Create an Enhanced DBL Profile

To Create an Enhanced DBL Profile, click New Enhanced DBL Profile.

The Create New Enhanced DBL Profile window is displayed. 

Make the necessary changes and click Save to save the changes. To cancel all changes, click Undo Edits.

To Copy Enhanced DBL Profile

To copy an Enhanced DBL Profile, select the profile from the Enhanced DBL Profile List window by clicking the radio button next to it.

The Copy Selected Enhanced DBL Profile window is displayed.

Make the necessary changes and click Save to save the changes. To cancel all changes, click Undo Edits.

To Delete an Enhanced DBL Profile

To copy an Enhanced DBL Profile, select the profile from the Enhanced DBL Profile List window by clicking the radio button next to it.

The Delete dialog-box is displayed.

Click Yes to confirm deletion or No to cancel deletion.

On successful deletion, a Delete successful message is displayed.

NOTE: Any attempt to delete an Enhanced DBL Profile in enabled state will result in the following Error message: