316 Matrix PRASAR UCS System Manual
Black List IP Address - SIP Extensions
Blacklist IP Address enables you to restrict unauthorized access to PRASAR UCS.
To use this feature, you must enable the Allow SIP Extension Registration check box and select the desired option
for Black List SIP Extension IP Address:Port on multiple Authentication Failure Attempts in the “Security Settings”.
The PRASAR UCS blacklists the IP Address from which an unauthorized attempt is made for registration. When
any user attempts to register as a SIP Extension using false credentials— Authentication ID or Authentication
Password and the authentication attempt fails for 10 times consecutively within 10 minutes, PRASAR UCS
blacklists the IP Address and port used for registration.
The blacklisted IP Address/es and ports are stored in the Black List IP Address - SIP Extensions table along with
the date and time. This activity will also be logged in the “System Activity Log” as well as “Simple Network
Management Protocol (SNMP)”.
If you want to allow access of PRASAR UCS to such black listed IP Address, you must remove it from the Black
List IP Address - SIP Extensions table. If this IP Address is a Trusted IP Address, you can configure it in the
Trusted IP Address/es table to avoid further black listing. For details, see “Security Settings”.
Blacklist IP Address table stores upto 500 entries. When the buffer is full, PRASAR UCS follows FIFO method to
store further entries. You cannot edit any entries in this table. However, if required, you may remove a entry from
this table.
To clear a entry from the Black List IP Address - SIP Extensions table,
• Login as System Engineer.
• Under Configuration, click VoIP Configuration.
• Click the Black List IP Address - SIP Extensions.
The Black List IP Address - SIP Extensions page opens.
• Select the Clear IP Address & Port check box of the entries that you want to remove from the Black List
IP Address - SIP Extensions table.
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