Currently we VPN from our Cisco 520 to a contractors Cisco 520 with no problem. We are moving to a 5520 ASA device and I copied our configuration from the 520 to the new 5520 ASA. I understand that a straight copy from the 520 to the 5520 ASA would be possible. When I plugged in the new device I could not VPN to the contractors 520 using the same code that worked on our 520. Any suggestions on what to look for moving from the 510 to the 5520 for VPN?
There was a lot of CLI changes from 6.x to the 7.0 code that the ASA runs. Normally when you upgrade from 6.x to 7.0 the upgrade process takes care of doing the config conversion for you, but in your case of cut/pasting the config in that won't work. I'm assuming you aredescribing a LAN-to-LAN tunnel here, so the main change you'll need in the ASA config is to add a tunnel-group for that peer, and define the pre-shared key under there.
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...