[sdnog] DNS problem

[Manhal Mohammed]

Hello SdNoggers 😊


This is my first time on this mailing list , I am Manhal
Mohammed from the National Data Center , 

I have some questions in the DNS 

first one : 
Our DNS design is stealth “split-horizon” , we have two NS
, NS0 & NS1 each from different ISP for availability , But NS1 is
unreachable due to networks problem, can I use the two name servers in the same
ISP ?? is that an issue to consider ? because now we are working just with one NS and this is very bad 
second : 
how to apply or implement some sort of security for the DNS ? like chroot , now i am not using chroot , can i use it after installing the bind and working with it ? is that will affect the DNS server , is there any risks ??? 
third  and last one : 
is flushing the DNS cache will affect it ?


 		 	   		  
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