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[SOLVED]DNS best practice?

tbrandl

There are two ways to configure DNS:

One way:
- Allowing DNS outgoing for your internal nameservers
- internal nameservers forwarding to ISP-DNS
- ASG pointing to internal nameservers 

Another way:
- ASG forwarding to ISP-nameservers
- "request routing" on ASG for internal domain pointing to internal nameservers
- internal nameservers forwarding to ASG
 
Which way do you use? And why? Which is "officially preferred"?
Both configurations seem working good for me, we run the first alternative on our cluster, the second in branch offices without internal dns (domain dns reachable via site2site-vpn).

Thanks for your ideas!
Thomas



BAlfson's DNS Best Practice's post has been moved to it's own highlighted thread here: https://community.sophos.com/utm-firewall/f/recommended-reads/122972/dns-best-practice
[edited by: FloSupport at 11:12 AM (GMT -7) on 18 Sep 2020]
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  • 0
    I use Astaro DNS for the Lan side DNS/caching and simpledns/IIS7 for the wan side DNS /kernel caching.  I don't allow recursion for anyone other than my box and drop the rest..spoofs. But now Astaro firewall drops the internal IP spoofs from Wan side before saving resources, so cool beans. I use both with similar results. I've also used squid but got more control with plugins from simpledns for years now. That combo is sick. 
    mike
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  • 0
    I use Astaro DNS for the Lan side DNS/caching and simpledns/IIS7 for the wan side DNS /kernel caching.  I don't allow recursion for anyone other than my box and drop the rest..spoofs. But now Astaro firewall drops the internal IP spoofs from Wan side before saving resources, so cool beans. I use both with similar results. I've also used squid but got more control with plugins from simpledns for years now. That combo is sick. 
    mike
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