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Aviv's avatar
Aviv
Icon for Cirrus rankCirrus
Sep 24, 2015

Dns Query based on suffix

Hi Folks!

 

I need to query Computers names from internal Dns and also to query Domain names from the internet by external dns. i have set and internal and external ip's of the dns'es in the DNS Lookup Server List. the problem is that when i use dig to query an a record only the first dns in the dns list answer the query. and there is no answer it does not try the second dns in the list.

 

i have tried to create a vs for dns with pool of the external and internal dns servers. now i need help with writing an irule that will forward queries that ending with domain.local to InternalDnsNode and all other to ExternalDnsNode.

 

Please Help or suggest your solution,

 

Thank,

 

Aviv Hassidim

 

2 Replies

  • Aviv's avatar
    Aviv
    Icon for Cirrus rankCirrus
    Sep 26, 2015

    Hi! I figured how to do it: 1.create 2 pools A.Pool_Dns_External B.pool_Dns_Internal

     

    2.create a dns listener: Dns>>Delivery>>Listeners>>Listerner list >> create in "Destination Address(/Mask" put the ip of the dns that you will query. change "Source Address Translation" to Auto Map in the resources Tab choose "Pool_Dns_External" as the pool 3.create this irule

     

    when DNS_REQUEST { if { [DNS::question name] ends_with "domain.local" } { pool Pool_Dns_internal } else { pool Pool_Dns_External } }

     

    4.attach the irule to the vs/dns listener you have created in stage 2

     

    test it by this command from ssh

     

    dig @(ip of the vs) SomeName.domain.local dig @(ip of the vs) yahoo.com

     

    • Aviv's avatar
      Aviv
      Icon for Cirrus rankCirrus
      Sep 29, 2015
      i forget to write that you have to enbale AddressTranslation and Port Translation