ASA disconnects the customer due to the XAUTH failure even if XAUTH disabled

Dear friends,

I am creating an IPsec tunnel between a ZyXEL ZyWALL P1 hardware firewall and an ASA 5510, OS version 8.0 (2). The two parties should authenticate using X.509 PKI certificates without no XAUTH authentication only.

The current configuration of the ASA software Cisco VPN Clients to connect without any problems. However, when I try to connect the ZyWALL, ASA complains about the "peer is not authenticated by xauth - drop connection" and he abandoned the connection. This intrigues me, that both the ZyWALL hardware and software clients are managed by the same group of tunnel in which the XAUTH is disabled with the command ""isakmp ikev1-user authentication no"." My goal, obviously, is to configure the ASA in such a way that it will be possible to create a tunnel between the ASA and the ZyWALL IPsec authenticated using certificates only, without the XAUTH.

The ZyWALL does not seem compatible with the configuration MODE. I don't know if it is a remarkable fact, but I'm there to completeness.

I am attaching the relevant extracts from the configuration and the output of the command debug crypto isakmp 127 . A short explanation of the different addresses in the debug output:

  • 158.193.139.0/24 is the public sector in the laboratory where the ZyWALL device is tested
  • 192.168.167.0/24 is the segment private behind the ZyWALL (its 'LAN' interface) device
  • 172.27.137.0/24 is the segment private behind the ASA to customers access via IPsec

I am very grateful for any advice you can give me!

Best regards

Peter

Peter,

Well, I needed to read a large part of your email address.

I understand you want to basically your firewall, zyxel to act as a clinet ezvpn (note that it doesn't send beacon of unity in MM1) and not a l2l tunnel.

Group = TG-RAIS, Username = Peter Paluch VPN, IP = 158.193.139.173, processing hash payload

Anywhere this username configured on the firewall, zyxel?

Marcin

Tags: Cisco Security

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