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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
    5.In 'Request Routing', the internal DNS is used for reverse DNS of internal IPs (for example if your internal subnet is 172.16.20.0/24, you would have '20.16.172.in-addr.arpa -> {Internal DNS}'. With that, the Astaro can list machine names instead of internal IP addresses in the reports.

    BAlfson
    In this step you say "request routing" is this how it should be entered?
    New Request route
    Domain = '20.16.172.in-addr.arpa 
    Target Servers = dns server and ip address


    Thanks
    Steve
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  • 0
    5.In 'Request Routing', the internal DNS is used for reverse DNS of internal IPs (for example if your internal subnet is 172.16.20.0/24, you would have '20.16.172.in-addr.arpa -> {Internal DNS}'. With that, the Astaro can list machine names instead of internal IP addresses in the reports.

    BAlfson
    In this step you say "request routing" is this how it should be entered?
    New Request route
    Domain = '20.16.172.in-addr.arpa 
    Target Servers = dns server and ip address


    Thanks
    Steve
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