What does "Add DNS suffixes" mean for Azure VPN client?

Question

HI, could somebody please explain what the DNS suffixes mean when looking at this article > https://learn.microsoft.com/en-us/azure/vpn-gateway/azure-vpn-client-optional-configurations

I've added Google DNS servers into the XML file and it does what I need, but to be honest I don't know or understand what the suffix bit does or if I need it.

For example, if I add the suffix '.database.windows.net' will all requests to this domain use the Google DNS server I specified in the XML file?

thanks

Answer 1

Hi @LeonT , I understand that you want to know what DNS suffix means in terms of Azure VPN P2S client configuration.

The DNS suffix setting is used to configure the primary DNS suffix for the VPN interface and the suffix search list after the VPN connection is established. More info: VPN Name Resolution - DNS Suffix.

It should list your private DNS domain so your users don't need to type FQDN (Fully Qualified Domain Name). For example, your Azure environment has the private DNS with the domain contoso.internal and you have servers automatically register their hostnames (eg. host1, host2) into that private DNS domain. If you configure Azure VPN P2S client with DNS suffix .contoso.internal, then your user that has connected via P2S VPN can use the server names: host1 and host 2 to reach those servers. Otherwise, they need to use the FQDN: host1.contoso.internal and host2.contoso.internal.

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