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application-screen (Security SIP)


Hierarchy Level


Configure the security screens for the Session Initiation Protocol (SIP) Application Layer Gateway (ALG) to handle unknown-messages and protect SIP server.

IPv6 is supported on the SIP ALG along with Network Address Translation Protocol Translation (NAT-PT) mode and NAT64 address translation.

The type of the <destination-ip-address> is changed from IPv4 address to IP prefix to support all kinds of IP addresses, and correspondingly a prefix is supported to allow multiple IP addresses.


The remaining statements are explained separately. See CLI Explorer.

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 8.5.