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Hierarchy Level


Specify the accepted SSL protocol version.

You can specify the SSL/TLS protocol version the SRX Series device uses to negotiate in SSL connections.


  • all—Accept all versions of TLS.

  • TLS version 1.0—Accept TLS version 1.0. It provides secure communication over networks by providing privacy and data integrity between communicating applications

  • TLS version 1.1—Accept TLS version 1.1. This enhanced version of TLS provides protection against cipher-block chaining (CBC) attacks.

  • TLS version 1.2 —Accept TLS version 1.2. This enhanced version of TLS provides improved flexibility for negotiation of cryptographic algorithms.

Required Privilege Level

services—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 12.1X44-D10. The tls11 and tls12 options are introduced in 15.1X49-D30.