This menu displays IP addresses that have attempted to register an non-existing extension or to register an existing extension with the wrong password. Eventually the IP address becomes blocked after 10 failed registration attempts within a 10 minute period. Whilst blocked, further registration attempts are ignored even if they use the correct parameters. This menu is supported from Release 10.1.

The default blocking time is 10 minutes. However, for non Avaya phones, if the IP address continues to attempt to register during this period its blocking time is extended.

When an address becomes blocked the system also generates an alarm in System Status and adds an entry to its audit log. A system alarm is also generated and can be output using any of the configurable system alarm routes (SMTP, SNMP, Syslog).

Note that the extension number of a phone attempting to register can also become blocked, see Blacklisted Extensions .

Columns:

• IP Address:
  The blacklisted IP address.
• Blocked:
  Indicates whether the source IP address is now blocked from registering after exceeding the number of failed registration attempts.
• Avaya Phone:
  Indicates whether the extension is recognized as being an Avaya phone.
• Failure Count:
  The number of registration attempt failures.
• Maximum Failure Count:
  The number of registration failures at which the extensions will become/became blocked.
• Last Failure:
  The date and time of the last failed registration attempt.
• Time to Remove :
  The date and time at which the extension, if not blocked, will be removed from the blacklist if there are no further failed registration attempts.
• Time to Unblock:
  The date and time at which the blocked extension will be unblocked and removed from the blacklist. For non-Avaya phones this will extend if the extension attempts to re-register again before this time.

Buttons

• Print...
  Prints all information available in the current screen (including any information currently scrolled off).

• Refresh
  Updates the screen. This button appears on screens that do not update automatically.

• Remove
  Remove the currently selected entry from the blacklist. This removes any blocking currently applied to that entry.

• Remove All
  Remove all the current entries from the blacklist. This removes any blocking currently applied to those entries.

• Save As...
  Saves the information shown on the screen to a text file (TXT or CSV). You can only save trace screens as CSV text files.