We are trying to establish a VPN tunnel between two Cisco 2821 routers with RSA-nonces authentication.
Each test fails. In the debug crypto isakmp we can see the message "%CRYPTO-6-IKMP_CRYPT_FAILURE: IKE (connection id 268435471) unable to decrypt (w/RSA private key) packet" .
He have checked the RSA public keys for 3 times and they seems to be correct.
Could you please help me with this problem. I would be greatful for any help.