cache only server与主server配置差异是什么？不能反向解析－急！见named.conf

shyface

cache only  server与 非cache only server 之间的主要配置上的差异是什么？

为什么不能反向解析？
// named.caching-nameserver.conf
//
// Provided by Red Hat caching-nameserver package to configure the
// ISC BIND named( DNS server as a caching only nameserver
// (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//
// DO NOT EDIT THIS FILE - use system-config-bind or an editor
// to create named.conf - edits to this file will be lost on
// caching-nameserver package upgrade.
//

options {
//      listen-on port 53 { 127.0.0.1; };
//      listen-on-v6 port 53 { ::1; };
        directory       "/var/named";
        Forwarders{
                59.124.160.116;
                192.168.1.1;
        };


        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;
                                //localhost;    //modified into --> any
        };
        recursion yes;
};

logging {
        channel default_debug {
                file "data/named.run";
                severity dynamic;
        };
};

zone "." IN {
        type hint;
        file "named.ca";
};

//latest modify
zone "localhost" IN {
        type master;
        file "named.localhost";
        allow-update{ none; };
};

zone "0.0.127.in-add.arpa" IN {
        type master;
        file"named.loopback";
        allow-update { none; };
};

zone "andeshz" IN {

        type master;
        file "internal_resov";
};

zone "1.168.192.in-addr.arpa" IN {
        type master;
        file "1.168.192.in-addr.arpa";
};

# Use with the following in named.conf, adjusting the allow list as needed:
key "rndc-key" {
      algorithm hmac-md5;
      secret "6W6yIf2NxkyEoVjp2FfbyA==";
};

controls {
      inet 127.0.0.1 port 953
              allow { 127.0.0.1; } keys { "rndc-key"; };
};
# End of named.conf