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Advanced DNS and BIND9 Configuration Guide

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Learn about configuring master, slave, and caching name servers using BIND9. This tutorial covers zone configuration, root servers, localhost setup, and reverse mapping for example.com.

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Advanced DNS and BIND9 Configuration Guide

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  1. DNS - BIND9 Přednášející Vaše jméno

  2. Master and caching name server options { directory "/var/named"; allow-transfer {“none”;}; }; zone "." { type hint; file “root.servers"; }; zone "example.com" in{ type master; file “master/master.example.com"; allow-transfer {192.168.23.1;192.168.23.2;); }; zone "0.168.192.IN-ADDR.ARPA" in{ type master; file “192.168.0.rev"; }; zone "localhost" in{ type master; file “master.localhost"; allow-update{none;}; }; zone "0.0.127.in-addr.arpa" in{ type master; file “localhost.rev"; allow-update{none;}; };

  3. Slave and caching name server options { directory "/var/named"; allow-notify {192.168.0.1}; allow-transfer {“none”;}; }; zone "." { type hint; file “root.servers"; }; zone "example.com" in{ type slave; file "slave/slave.example.com"; masters {192.168.0.1;}; }; zone "0.168.192.IN-ADDR.ARPA" in{ type slave; file "sec.192.168.0.rev "; masters {192.168.0.1;}; }; zone "localhost" in{ type master; file “pri.localhost"; allow-update{none;}; }; zone "0.0.127.in-addr.arpa" in{ type master; file “localhost.rev"; allow-update{none;}; };

  4. Caching name server options { directory "/var/named"; allow-notify {192.168.0.1}; allow-query {192.168.3.0/24; }; }; zone "." { type hint; file “root.servers"; }; zone "localhost" in{ type master; file “master.localhost"; allow-update{none;}; }; zone "0.0.127.in-addr.arpa" in{ type master; file “localhost.rev"; allow-update{none;}; };

  5. Root servers . 3600000 IN NS A.ROOT-SERVERS.NET. A.ROOT-SERVERS.NET. 3600000 A 198.41.0.4 ; . 3600000 NS B.ROOT-SERVERS.NET. B.ROOT-SERVERS.NET. 3600000 A 192.228.79.201 ; . 3600000 NS L.ROOT-SERVERS.NET. L.ROOT-SERVERS.NET. 3600000 A 198.32.64.12 ; . 3600000 NS M.ROOT-SERVERS.NET. M.ROOT-SERVERS.NET. 3600000 A 202.12.27.33 ; End of File

  6. localhost $TTL 86400 ; 24 hours could have been written as 24h $ORIGIN localhost. ; line below = localhost 1D IN SOA localhost root.localhost @ 1D IN SOA @ root ( 2002022401 ; serial 3H ; refresh 15 ; retry 1w ; expire 3h ; minimum ) @ 1D IN NS @ 1DIN A 127.0.0.1

  7. Localhost reverse $TTL 86400 ; ; could use $ORIGIN 0.0.127.IN-ADDR.ARPA. @ IN SOA localhost. root.localhost. ( 1997022700 ; Serial 3h ; Refresh 15 ; Retry 1w ; Expire 3h ) ; Minimum IN NS localhost. 1IN PTR localhost.

  8. Example.com $TTL 86400 ; 24 hours could have been written as 24h or 1d $ORIGIN example.com. @ 1DIN SOA ns1.example.com. hostmaster.example.com. ( 2002022401 ; serial 3H ; refresh 15 ; retry 1w ; expire 3h ; minimum ) IN NS ns1.example.com. ; in the domain IN NS ns2.smokeyjoe.com. ; external to domain IN MX 10 mail.another.com. ; external mail provider ; server host definitions ns1 IN A 192.168.0.1 ;name server definition www IN A 192.168.0.2 ;web server definition ftp IN CNAME www.example.com. ;ftp server definition bill IN A 192.168.0.3 fred IN A 192.168.0.4

  9. Example.com reverse map • $TTL 86400 ; 24 hours could have been written as 24h or 1d • $ORIGIN 0.168.192.IN-ADDR.ARPA. • @ 1D IN SOA ns1.example.com. mymail.example.com. ( • 2002022401 ; serial • 3H ; refresh • 15 ; retry • 1w ; expire • 3h ; minimum ) • ; server host definitions • INPTR ns1.example.com. • 2 IN PTR www.example.com. ; non server domain hosts • IN PTR bill.example.com. • IN PTR fred.example.com.

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