About Perfect Forward Secrecy

To specify SA lifetime negotiation values, you can also optionally configure the perfect forward secrecy (PFS) value in the crypto map.

The PFS feature is disabled by default. If you set the PFS group, you can set one of the DH groups: 1, 2, 5, or 14. If you do not specify a DH group, the software uses group 1 by default.



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