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Second LAN not getting internet connection

nmw748

Good afternoon,

I'm hoping someone here can help me out, as I've spent the past several days researching every post I could find on this forum and several hours on the phone with tech support, all with no success.

I am currently trying to setup a second LAN connection for the students, named 'Student VLAN' (it's not technically a vlan, so ignore the name). The Sophos device I'm using is a Sophos UTM 9.707. When I connect my laptop directly into the eth0 port on the UTM, I pull the correct IP address (172.16.20.x) but can not access the internet. Below are all the screenshots of what I have currently setup.

Like I said, I've spent close to 10 hours on the phone with tech support on this, so any help would be appreciated.



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  • 0

    Unlike your other networks (71.182.134.0/24, 74.98.192.0/23 and 172.10.0.0/16) the Student network is using a so-called "private IP address" as defined in RFC1918.
    This essentially means that these addresses are not part of the publically reachable internet and cannot be addressed directly.
    You need a feature called NAT (native address translation). Sophos UTM can use NAT, you simply have to activate it for this network.

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  • 0

    Unlike your other networks (71.182.134.0/24, 74.98.192.0/23 and 172.10.0.0/16) the Student network is using a so-called "private IP address" as defined in RFC1918.
    This essentially means that these addresses are not part of the publically reachable internet and cannot be addressed directly.
    You need a feature called NAT (native address translation). Sophos UTM can use NAT, you simply have to activate it for this network.

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  • 0 in reply to Alan Brand

    Hi Alan,

    the screenshot "Student VLAN (Network) -> Uplink Interfaces" looks like masquerading already ...


    Dirk

    Systema Gesellschaft für angewandte Datentechnik mbH  // Sophos Platinum Partner
    Sophos Solution Partner since 2003
    If a post solves your question, click the 'Verify Answer' link at this post.

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