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Hierarchy Level


Raise a security alarm when the device detects a replay attack. A replay attack is a form of network attack in which a valid data transmission is maliciously or fraudulently repeated or delayed.


Replay attacks do not raise security alarms.


  • threshold value—Number of reply attacks up to which an alarm is not raised. When the configured number is exceeded, an alarm is raised.

  • Range: 1 through 100,00,00,000.

  • Default: 1000

Required Privilege Level

security—To view this statement in the configuration.

security-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 11.2.