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SSL VPN DNS issue

Travis Cantrell

Hello,

I'm having an issue where clients are failing to resolve address names while using VPN. I can ping an IP address, but pinging a host name returns host not found. The UTM is functioning as the gateway and DNS server and DNS works fine in the LAN. I have set the VPN pool as an allowed network for DNS services and set the gateway and Google DNS as DNS servers under the Remote access options. I've searched and read the guides from Sophos, but I can't seem to find the cause.



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  • 0

    Have you put the DNS-address of the VPN interface in the DNS-address field (Usually 10.242.2.1)?

    What happens when you open a command prompt and type NSLOOKUP followed by enter?

  • 0 in reply to apijnappels

    You mean put the VPN interface under DNS servers under Remote Access-> Advanced? Just tried that, and it didn't change anything.

     

    Nslookup gets me: 

     

     nslookup google.com
    Server:        127.0.1.1
    Address:    127.0.1.1#53

    ** server can't find google.com: REFUSED

     

    So it looks like the client isn't picking up the DNS server information. I'm using an SSL VPN and OpenVPN client on my machine, if that makes a difference.

Reply
  • 0 in reply to apijnappels

    You mean put the VPN interface under DNS servers under Remote Access-> Advanced? Just tried that, and it didn't change anything.

     

    Nslookup gets me: 

     

     nslookup google.com
    Server:        127.0.1.1
    Address:    127.0.1.1#53

    ** server can't find google.com: REFUSED

     

    So it looks like the client isn't picking up the DNS server information. I'm using an SSL VPN and OpenVPN client on my machine, if that makes a difference.

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