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Name Servers Versions

Discussion in 'Bind / DNS / Nameserver Issues' started by Nirjonadda, May 16, 2017.

  1. Nirjonadda

    Nirjonadda Well-Known Member

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    I am getting this WARNING.

    Code:
    WARNING: Name servers software versions are exposed:
     "PowerDNSAuthoritativeServer3.4.10(jenkins@autotest.powerdns.combuilt20170306160718root@rpmbuild-64-centos-7.dev.cpanel.net)"
    Exposing name server's versions may be risky, when a new vulnerability is found your name servers may be automatically exploited by script kiddies until you patch the system.
    

    One or more nameservers responded to version queries. This can be considered a breach of security. If a malicious person or program had access to a version-specific exploit for your DNS server, displaying the version info openly will make their attack much easier. This should be removed or obscured. The nameservers that responded to version queries are:

    Code:
    IP responded with "PowerDNS" "Authoritative" "Server" "3.4.10" "(jenkins@autotest.powerdns.com" "built" "20170306160718" "root@rpmbuild-64-centos-7.dev.cpanel.net)"
     
    #1 Nirjonadda, May 16, 2017
    Last edited by a moderator: May 16, 2017
  2. cPanelJasonT

    cPanelJasonT Level 2 Technical Analyst
    Staff Member

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    Hello,
    This version string reporting can be changed by setting the following in /etc/pdns/pdns.conf:
    Code:
    version-string=anonymous
    
     
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