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Basic VPN question

In https://community.sophos.com/products/unified-threat-management/astaroorg/f/58/t/53527, mrainey posed a question about doing:

[home client] -> (SSL Remote Access) -> [ASG220] -> (IPsec Site-to-Site) -> [ASG120] -> [Terminal Server]


He was unable to accomplish this without:
  • adding the 'VPN Pool (SSL)' to 'Local networks' for the 'IPsec Connection' on the ASG220
  • creating a network definition on the 120 (SSL Pool on the 220) and adding it to 'Remote networks' for the 'Remote gateway' in the 120.

This makes it appear like he needs to alllow the internal network of the 120 to access the 'VPN Pool (SSL)' on the 220.   Is that an idiosyncracy of Terminal Server, or is there a flaw in my understanding?*

Thanks - Bob
*OK, OK, I know there are lots of flaws. [:D]


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  • Right, that also works without strict routing.  With strict routing the SNAT approach recommended in the KB article doesn't work.  Thanks, I've modified the post again.

    I wonder - instead of a SNAT in Site A, would a gateway route in the resource at Site B, '[VPN Pool for Site A]->[Internal (Address) of Site A]', work?  Would strict routing need to be disabled for that to work?

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

    Sorry to kinda reopen on you 8 years later - just in case someone reads this like I did.

    If your Site-to-Site is trusted and/or you would like to do fine grained access control. 

    Please don't do any kind of NAT. 

    As Bob suggested you can do a Route - and please do so !

     

    Regards 

    Maximilian S.

  • Hi, Similian, and welcome to the UTM Community!  Great nickname!

    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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