TL-R600VPN Phase 2 of IKE negotiation failed Error=9

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TL-R600VPN Phase 2 of IKE negotiation failed Error=9

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TL-R600VPN Phase 2 of IKE negotiation failed Error=9
TL-R600VPN Phase 2 of IKE negotiation failed Error=9
2023-02-23 06:12:50
Tags: #VPN #IPSec
Model: TL-R600VPN  
Hardware Version: V4
Firmware Version: 4.0.3 Build 20190227 Rel.48206

Anyone now what the issue is that would trigger an Error=9 when setting up an IPSec connection.

 

Phase 1 negotiation has no issue:

WAN2: Phase 1 of IKE negotiation succeeded. (Peers=y.y.y.y<->x.x.x.x)

 

But Phase 2 fails:

WAN2: Phase 2 of IKE negotiation failed. (Peers=y.y.y.y<->x.x.x.x, Error=9)

 

I have checked and both ends have the same Phase 2 parameters:

esp-md5-3des

 

I have connected Wireshart to the router and I can see all the ISAKMP messages.

I can read/decode all the Phase 1 messages, but of course all the phase 2 messages are encrypted so can't be decoded by Wireshark.

 

Interested in knowing what "Error=9" means so that I can figure out what part of phase 2 is failing.

 

Thanks.

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Re:TL-R600VPN Phase 2 of IKE negotiation failed Error=9
2023-02-24 09:16:11

  @SuperSonicBiker 

 

It means there is some trouble in your VPN settings, because you can not even establish the tunnel.

Check if you use IKEV1 or IKEV2, maybe it is the issue.

Just striving to develop myself while helping others.
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