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PSK for IKEv2 not persistent

IulianaNegura
Level 1
Level 1

Hi all,

We are planning to replace ASA 5525 with virtualized ASA on Firepower. While checking the configuration which we restored from our running ASA(which contains a folder named VPNPresharedKeys with a single file for each VPN profile), we noticed PSK for IKEv2 is not persistent, it is missing from Crypto map Entry.


2024-04-02 16_45_32-Edit IPsec Site-to-Site Connection Profile 1.png2024-04-02 16_45_54-Edit IPsec Site-to-Site Connection Profile crypto map entry.png

As the equipment is not yet in place, there are no active VPNs.

Is this a normal behavior until we connect it to the internet  and the PSK will persist once the tunnels will negotiate?

Anyone stumbled in to this so far?

Thank you!

2 Replies 2

@IulianaNegura EDIT: you can configure the PSK either under the connection profile/tunnel-group or under the crypto map sequence for that peer.

crypto map outside_map2 1 match address outside_cryptomap
crypto map outside_map2 1 set peer 2.2.2.1
crypto map outside_map2 1 set ikev2 pre-shared-key **********
!
tunnel-group 2.2.2.1 ipsec-attributes
 ikev2 local-authentication pre-shared-key **********
 ikev2 remote-authentication pre-shared-key **********

Typically the PSK is configured just under the tunnel-group/connection profile and not under the crypto map, so that should not be a problem that the PSK is not configured under the crypto map.

As I see there is PSK for local and remote peer auth.

And in cli we config it under the tunnel group

This second field (empty) I will check for what it used.

MHM