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NAT forwarding for UBUNTU

Hello, I recently added a box that runs the latest ubuntu.  This box is behind astaro.  I assigned a network definition for this box and assigned it its own IP address with the gateway IP being the astaro internal address.  I set up DNAT as: Traffic selector: Any - Any - External Address, destination: Linux IP. SNAT: Linux IP - Any - Internet IPv4, source: External Address.  Both rules have automatic packet filtering enabled.  Within Ubuntu when I type: apt-get update it fails to connect to the outside to update the box.  Is there something I need to set in Ubuntu to communicate with the gateway any further than I already have?  When I type ifconfig the IP matches the IP assigned to it in astaro.  Any help is greatly appreciated.  Thank you.


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  • Always check the packet filter (firewall) log.  If the mystery persists, check the Intrusion Prevention log.

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
Reply
  • Always check the packet filter (firewall) log.  If the mystery persists, check the Intrusion Prevention log.

    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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