I am trying to set up a Site-to-Site VPN between ASA 5510 and a number of PIX 506E and PIX 501. The PIX 506E at the Headoffice is being swapped with two ASA5510 configured in Active-Standby.
I created the L2L VPN on ASA with the ASDM. But I couldn't get the ASA to establish VPN tunnels with the PIXs.
I saw that on the ASA config that PFS is enabled by default when I created the VPN using ASDM.
PFS is not enabled on the PIXs. Can this affect establishing VPN tunnels between the ASA and the PIXs? Or, is there something else that could be missing out?