For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

IRONMAN's avatar
IRONMAN
Icon for Cirrostratus rankCirrostratus
Feb 20, 2018

GTM name resolve for sub-domains from NS

I have external Linux DNS server for my domain.com.

 

Now i Created Cname in linux server

 

. IN CNAME

 

delegate authority for the wip.domain.com

 

wip IN NS gtm1.domain.com. IN NS gtm2.domain.com.

 

gtm1.domain.com. IN A 192.168.101.254 gtm2.domain.com. IN A 192.168.102.254

 

Now my query is,

 

  • When i request the in internet for , i get the answer from GTM box it is has IP of x.x.x.x and cname for it , i am ok with this

** But When I request for somedomain test.domain.com, what will happen, since linux server dont has the cname for test.domain.com, Should i create CNAME and delegate for all the sundomains?*

 

1 Reply

  • Kevin_K_51432's avatar
    Kevin_K_51432
    Historic F5 Account

    Greetings,

     

    My guess is the cname entry is to delegate only a few specific subdomains to GTM / DNS.

     

    Do you intend to answer many name resolution queries for the domain from the Linux server?

     

    If not, perhaps just skip the cname entry and delegate the entire domain?

     

    If only a few are being delegated to GTM, then just keep using the cname.

     

    Hope this is somewhat helpful, thanks,

     

    Kevin