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iPad IPSec VPN - RSA Signature - ERROR: invalid authmethod 65005

Hi, Hoping someone can help out I have setup an IPSec VPN on Cisco SA540 using RSA-Signature however I am unable to connect the error I received on iPad is "Negotiation with VPN Server failed."


VPN Error:

[IKE] ERROR:  invalid authmethod 65005 why ?

[IKE] INFO:  Received Malformed packet of payload


VPN Config


IKE Policy:

Direction / Type: Responder

Exchange Mode: Main

Identifier Type:  FQDN

Identifier: local.com

Encryption Algorithm: AES-128

Authentication Algorithm: SHA-1

Authentication Method: RSA-Signature

DH Group: Group 2

SA-Lifetime: 28800

Dead Peer Detection: Enabled

XAUTH Configuration: Edge Device


VPN Policy:

Remote Endpoint: FQDN - 0.0.0.0

Mode Config: Enabled

Remote traffic: Any

SA Lifetime: 3600

Encryption Algorithm: AES-128

Integrity Algorithm: SHA-1

PFS Key Group: Enabled

DH Group 2


VPN Log attached.

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iPad IPSec VPN - RSA Signature - ERROR: invalid authmethod 650

Hello nsweetman,

I have not seen other users using the RSA-Signature, so my assistance may be limited. I did find the following link which you can check if you would like.

http://www.linuxquestions.org/questions/linux-networking-3/probem-ipsec-racoon-roadwarrior-client-main-mode-hybrid_rsa-authentication-888722/

To summerize, you should use Aggressive mode instead of Main mode.

If this change fails, you should be able to use the Pre-Shared Key method. If you need assistance with that, feel free post back.

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