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IPsec site to site VPN with multiple remote address ranges - NAT setup

Chuckak
I have successfully set up a site to site VPN with another site (non UTM)
The remote site has 11 address ranges that translate into 11 SAs that are green on the IPsec tab.  This site previously was connected using ISA 2006 and still connects successfully if I enable it.  My UTM is AD enabled and joined.

The issue is I cannot get connectivity - unable to ping the remote server as I do not understand how to setup the NAT rules or whatever else I am missing.
I have 3 computers that need to have access to the servers on the other end of the tunnel.
I created a network group that includes the 11 network ranges and a group for the 3 computers.  I assume I need a SNAT and a DNAT and have tried multiple ways.  I have ping enabled.  I am unable to ping the remote servers from the UTM tools.  Traceroutes go to the internet instead of the tunnel.  Any ideas?


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  • 0
    OK, assuming that your IPsec Connection uses 'Local Interface: External', then 'Local Networks' must contain only the "External (Address)" object and 'Strict routing' must not be selected.  To get the traffic into the tunnel:

    SNAT : {3 computers} -> Any -> {11 subnets} : from External (Address)


    A little more luck with that?

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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  • 0
    OK, assuming that your IPsec Connection uses 'Local Interface: External', then 'Local Networks' must contain only the "External (Address)" object and 'Strict routing' must not be selected.  To get the traffic into the tunnel:

    SNAT : {3 computers} -> Any -> {11 subnets} : from External (Address)


    A little more luck with that?

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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