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duckngooser's avatar
duckngooser
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Jun 16, 2018

How to configure GTM with DNS at Network Solutions

We currently use Network Solutions for our internet DNS. How do we go about setting up GTM when DNS requests don't actually come to our data centers where the F5's live?  
application delivery
BIG-IP DNS
LTM
security
AceDawg1's avatar
AceDawg1
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Jun 16, 2018

When setting up GTM with an existing DNS infrastructure, the location of the DNS servers is not relevant (on prem, off prem, cloud). What is relevant is the proper configuration of the Network Solutions DNS to reflect the existence of your GTM infrastructure. There are 4 basic steps that need to be considered in the overarching setup:

 

  1. Create a sub domain on your existing DNS setup (e.g. gtm.domain.com)
  2. Configure the existing DNS making GTM server(s) authoritative over the new sub domain
  3. Any DNS resource managed by GTM will be declared by CNAME (name.domain.com in CNAME name.gtm.domain.com)
  4. Configure a wide ip in GTM (name.gtm.domain.com) with the appropriate pools, load balancing methods, etc. to return responses that reflect the organization’s requirements
  • duckngooser's avatar
    duckngooser
    Icon for Nimbostratus rankNimbostratus
    Jun 17, 2018

    So if the current site is , to accomplish this without changing the name of the site and cert on the site to , I'd just need to set example.com to authoritative on GTM and configure the current DNS to point towards GTM as the authoritative source?

     

  • AceDawg1's avatar
    AceDawg1
    Icon for Nimbostratus rankNimbostratus
    Jun 17, 2018

    That is correct.

     

    1. create a sub domain called gtm.example.com on the network solutions dns server.

    2. create a nameserver record on network solutions dns (gtm.example.com in ns gtmserver.example.com)

       

    3. create a cname record for on network solutions dns ( in cname )

       

    4. create wideip configuration on gtmserver.example.com for

       

    Client requests set the http host header to so there won't be a ssl cert error. DNS will simply provide resolution for purposes of ip routing.