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Arturo Bianchi
Beginner

ASDM without 3DES - Recovery wrong encryption license from remote

Hi,

following an incorrect license change, an appliance has lost its encryption protocols... after reboot it is not possible to access remotely via ssh to attempt a recovery:

 

ssh -1Selected cipher type <unknown> not supported by server.
ssh -2Protocol major versions differ: 2 vs. 1

 

so I just have to force access via ASDM or establish if it is possible to initialize a temporary SSL session in degradation! But at a first search of how to force java / asdm to connect the remote device I did not find anything interesting... why? Isn't it really possible to force ASDM to connect or did I miss some interesting article / solution?

 

Thanks!

 

73,
Arturo.

 

1 REPLY 1
Marvin Rhoads
VIP Community Legend

Your best path after having that situation is to connect via console and reapply a correct 3DES-AES license activation key.

As far as I know, ASDM (which uses the Java security modules) cannot be made to work with an ASA not having a valid 3DES-AES license active.