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How to add a network definition DNS host for a hostname which domain has already existing host definitions in UTM DNS?

ErikFranzén

I have a domain, say mydomain.com. I have configured a static host for fw.mydomain.com to 192.168.1.1 in the UTM DNS.

How can I configure another host which is a part of the same domain, say bastion2.mydomain.com as a DNS host, telling UTM to look up bastion2.mydomain.com in the public DNS. In this case bastion2.mydomain.com is another UTM which is using DynDNS to update its public IP.

The use case here is that  bastion2.mydomain.com is used as the remote peer for connecting a VPN S2S tunnel.

 



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  • 0

    Erik, you already know about DNS Host objects, so I guess I don't understand what you're asking.

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson

    Well, dns host object is not working, bastion2.mydomain.com becomes unresolved, and I assume that this is because the UTM has other static entries for the domain mydomain.com which means that the UTM only check its own DNS, not the public?

  • 0 in reply to ErikFranzen

    That should work, Erik.  If you don't have a static entry or a Request Route for mydomain.com, how does your configuration differ from DNS best practice?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson

    Well, this is a home license installation and I am using the DNS in UTM for all lookups. I do not have a separate internal DNS.

    I have done some testing. In my public dns, bastion2.mydomain.com is a cname for fw.mydomain.com. Public DNS is working.

    In the UTM I have other static hosts configured to local IP-addresses for the domain mydomain.com . After creating the dns host definition  "bastion2.mydomain.com" it says "unresolved" in the definitions list.

    Detailed DNS lookup tool under Support menu gives the following result:

    Trying "bastion2.mydomain.com" 

    Received 104 bytes from 127.0.0.1#53 in 0 ms

Trying "bastion2.mydomain.com"

Host bastion2.mydomain.com not found: 3(NXDOMAIN)

Received 104 bytes from 127.0.0.1#53 in 0 ms

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  • 0 in reply to BAlfson

    Well, this is a home license installation and I am using the DNS in UTM for all lookups. I do not have a separate internal DNS.

    I have done some testing. In my public dns, bastion2.mydomain.com is a cname for fw.mydomain.com. Public DNS is working.

    In the UTM I have other static hosts configured to local IP-addresses for the domain mydomain.com . After creating the dns host definition  "bastion2.mydomain.com" it says "unresolved" in the definitions list.

    Detailed DNS lookup tool under Support menu gives the following result:

    Trying "bastion2.mydomain.com" 

    Received 104 bytes from 127.0.0.1#53 in 0 ms

Trying "bastion2.mydomain.com"

Host bastion2.mydomain.com not found: 3(NXDOMAIN)

Received 104 bytes from 127.0.0.1#53 in 0 ms

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