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silver's avatar
silver
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Apr 01, 2011

Securing the named configuration

Hi,

 

 

We are using the GTM and it's behind the firewall and opened port tcp/udp 53.

 

 

Can any once suggest how to secure the named configuration and fine tuning methods.

 

 

Thanks in advance.

 

  • Hi Silver,

     

     

    if you're using the GTM for standard DNS resolution (not just wideip's) I'd recommend version 10.2.1 and HF2 which includes the following:

     

     

    BIND had been updated to mitigate the vulnerabilities in CVE-2010-3613 and CVE-2010-3615

     

    BIND has been updated to 9.6.3 to address an issue where DNSSEC validation could fail when a new Delegation Signer record is inserted into a trusted DNSSEC validation tree

     

     

    You may also find these useful:

     

     

    http://support.f5.com/kb/en-us/solutions/public/6000/800/sol6827.html - Disabling the DNS version response on the BIG-IP GTM

     

    http://support.f5.com/kb/en-us/solutions/public/7000/000/sol7055.html - Enabling DNS recursion on the BIG-IP GTM system

     

    http://support.f5.com/kb/en-us/solutions/public/6000/900/sol6963.html - Managing the BIG-IP BIND configuration file

     

    http://support.f5.com/kb/en-us/solutions/public/7000/300/sol7317.html - Overview of port lockdown behaviour

     

     

    Hope it helps!