Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

PowerRangers's avatar
PowerRangers
Icon for Cirrostratus rankCirrostratus
Dec 20, 2023

F5 DNS for External websites

Greetings everyone, I require assistance with F5 DNS resolution for external websites. I have a website hosted on GoDaddy, for example, mapmap.org. Currently, it points to a single A record, and I ...
application delivery
cloud
F5 GTM DNS
security
zamroni777's avatar
zamroni777
Icon for MVP rankMVP
Dec 20, 2023

it's better if you share the dns records in godady and f5 config.

usually, f5 dns implementaiton using dns record is like this:

 

 

Origin::
a. In godaddy:
host1.mycompany.com	IN A 1.2.3.4
host2.mycompany.com	IN A 11.12.13.14
host3.mycompany.com	IN A 21.22.23.24


New using F5 DNS::
a. In godaddy: declare new subdomain to be NS-ed by F5 DNS and create alias record for previous A records
f5dc1.mycompany.com IN A 5.6.7.8		 /// Datacenter1 F5 DNS listener address
f5dc2.mycompany.com IN A 15.16.17.18		 /// Datacenter2 F5 DNS address
f5dns.mycompany.com	IN NS f5dc1.mycompany.com
f5dns.mycompany.com	IN NS f5dc2.mycompany.com
host1.mycompany.com	IN CNAME host1.f5dns.mycompany.com
host2.mycompany.com	IN CNAME host2.f5dns.mycompany.com
host3.mycompany.com	IN CNAME host3.f5dns.mycompany.com

b. In F5 DNS:
create wideip configs for host1.f5dns.mycompany.com, host2.f5dns.mycompany.com, host3.f5dns.mycompany.com which basically serves:
host1.f5dns.mycompany.com	IN A ....	//IP address is decided dynamically by F5 DNS
host2.f5dns.mycompany.com	IN A ....	//IP address is decided dynamically by F5 DNS
host3.f5dns.mycompany.com	IN A ....	//IP address is decided dynamically by F5 DNS

 

 

 

 

 

  • PowerRangers's avatar
    PowerRangers
    Icon for Cirrostratus rankCirrostratus
    Dec 20, 2023

    I agree with the config you said, but it is good for *.mycompany.com. its a subdomain and TLD. I have only top level domain .org like example www.mapmap.org where there is no company name or subdomain. Wanted to see how to achive in this scenario. 

    • zamroni777's avatar
      zamroni777
      Icon for MVP rankMVP
      Dec 20, 2023

      so basically originaly you have these records in godaddy:
      mapmap.org IN NS ...godady name servers...
      mapmap.org IN A ....you webserver public ip adress...

      So in godaddy, you still need to delete "mapmap.org IN A ..." and create subdomain and alias such as:
      f5dns.mapmap.org IN NS ... f5dc1 and f5dc2...
      mapmap.org IN CNAME host1.f5dns.mapmap.org