DNS Cluster Security, Correct Setup?

IndicHosts.net

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Mar 11, 2006
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We are trying to setup a secure DNS cluster for cPanel servers.

To have secure DNSONLY instances
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Setup DNSONLY instance with nothing about the webserver (no access hash, no ip, nothing). This allows webservers to write to DNSONLY and DNSONLY to service the dns requests.

To have secure WebServer instances
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In WebServer setup DNSONLY instance in write-only mode. So is nothing can come from DNSONLY back to WebServer (no reverse movement of corrupted zones)


Now we want to setup a WebServer in dual mode Web+DNS
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WebServer1 is setup as dual mode. But here the access hash of the WebServer1 is available to all the other WebServer instances, which opens up the WebServer1 to attack via whm api if any of the other WebServer instances are hacked!!


How can I securely setup WebServer in dual mode Web+DNS?
 

IndicHosts.net

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Mar 11, 2006
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Here is what we have done for now.
- create an alternate-user for DNS cluster
- Use "Managing DNS Cluster as" to set this alternate-user to manage cluster functions
- Have minimal rights assigned to alternate-user
- Setup the access hash of this alternate-user in other WebServers
 

cPanelMichael

Administrator
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Apr 11, 2011
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WebServer1 is setup as dual mode. But here the access hash of the WebServer1 is available to all the other WebServer instances, which opens up the WebServer1 to attack via whm api if any of the other WebServer instances are hacked!!
Hello :)

Could you elaborate on the specific cluster configuration you have in-place or post a screenshot of it?

Thank you.
 

Kelvin Lim

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Apr 23, 2016
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Here is what we have done for now.
- create an alternate-user for DNS cluster
- Use "Managing DNS Cluster as" to set this alternate-user to manage cluster functions
- Have minimal rights assigned to alternate-user
- Setup the access hash of this alternate-user in other WebServers
Hi,
Do you mind to share how did you setup the alternate-user to manage your cluster?
Thanks
 

cPanelMichael

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Apr 11, 2011
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