VPN is working but lots of errors in logs.


  • I have an IPSEC VPN between pfSense and VMWare Vcloud.

    The VPN appears to be working fine, however I have a constant stream of error messages in the IPSEC logs.

    
    racoon: [IPSec]: [ <remote ip="">] ERROR: failed to pre-process ph2 packet [Check Phase 2 settings, networks] (side: 1, status: 1).
    racoon: ERROR: failed to get sainfo.</remote> 
    

    These are occurring at roughly 10 second intervals.

    I Googled and "failed to get sainfo" suggests a subnet mismatch - however I have checked and all subnets are correct.

    Settings

    Phase 1

    
    Authentication method: MutualPSK
    Negotiation mode: main
    My identifier:  <my ip="">Peer identifier: <remote ip="">Pre-Shared Key: <blah>Policy Generation: Default
    Proposal Checking: Default
    Encryption algorithm: AES 256bits
    Hash algorithm: SHA1
    DH key group: 2(1024bit)
    Lifetime: 28800
    NAT Traversal: Disable
    DPD: enabled</blah></remote></my> 
    

    This is a list of the phase 2 entries.

    
    tunnel 	192.168.0.0/24 	172.16.63.0/24 	ESP 	AES (256 bits) 	SHA1 	
    tunnel 	192.168.0.0/24 	172.16.60.0/24 	ESP 	AES (256 bits) 	SHA1 	
    tunnel 	192.168.0.0/24 	172.16.61.0/24 	ESP 	AES (256 bits) 	SHA1 	
    tunnel 	192.168.0.0/24 	172.16.62.0/24 	ESP 	AES (256 bits) 	SHA1 	
    tunnel 	192.168.3.0/24 	172.16.63.0/24 	ESP 	AES (256 bits) 	SHA1 	
    tunnel 	192.168.3.0/24 	172.16.60.0/24 	ESP 	AES (256 bits) 	SHA1 	
    tunnel 	192.168.3.0/24 	172.16.61.0/24 	ESP 	AES (256 bits) 	SHA1 	
    tunnel 	192.168.3.0/24 	172.16.62.0/24 	ESP 	AES (256 bits) 	SHA1 	
    tunnel 	192.168.0.0/24 	172.16.64.0/24 	ESP 	AES (256 bits) 	SHA1 	
    tunnel 	192.168.3.0/24 	172.16.64.0/24 	ESP 	AES (256 bits) 	SHA1 	
    
    

    Phase 2 settings for all entries:

    
    Mode: Tunnel IPV4
    Protocol: ESP
    Encryption algorithms: AES256
    Hash algorithms: SHA1
    PFS key group: 2(1024bit)
    Lifetime: 28800
    
    

    Any help would be appreciated.

    pfSense version:

    2.1.1-RELEASE (amd64)
    built on Tue Apr 1 15:22:21 EDT 2014
    FreeBSD 8.3-RELEASE-p14

    VMWare Vcloud Director version unknown.


  • Replying to own post as this may help someone else in the future.

    I found the issue.

    On the remote side, I had defined our three (local) networks:

    192.168.0.0/24
    192.168.3.0/24
    10.1.1.0/24

    Because we had no need for the 10.x subnet to use the VPN yet, I didn't define a phase 2 entry on pfSense.

    This was causing the errors.

    Defining a phase 2 entry for the 10.x network on pfSense resolved my issue.