CentOS 7实现DNS+DHCP动态更新详解

2020-01-30 17:02:39王冬梅

        listen-on-v6 port 53 { ::1; };    

        directory       "/var/named";    

        dump-file       "/var/named/data/cache_dump.db";    

        statistics-file "/var/named/data/named_stats.txt";    

        memstatistics-file "/var/named/data/named_mem_stats.txt";    

        allow-query     { any;};

        /*   

         - If you are building an AUTHORITATIVE DNS server, do NOT enable recursion.    

         - If you are building a RECURSIVE (caching) DNS server, you need to enable    

           recursion.    

         - If your recursive DNS server has a public IP address, you MUST enable access    

           control to limit queries to your legitimate users. Failing to do so will    

           cause your server to become part of large scale DNS amplification    

           attacks. Implementing BCP38 within your network would greatly    

           reduce such attack surface    

        */    

        recursion no;

        dnssec-enable yes;   

        dnssec-validation yes;    

        dnssec-lookaside auto;

        /* Path to ISC DLV key */   

        bindkeys-file "/etc/named.iscdlv.key";

        managed-keys-directory "/var/named/dynamic";

        pid-file "/run/named/named.pid";   

        session-keyfile "/run/named/session.key";    

};

logging {   

        channel default_debug {    

                file "data/named.run";    

                severity dynamic;