DNS - Domain Name Service

Конфигурирование DNS-клиента

/etc/resolv.conf :
domain          fedfond.msk.su
nameserver      127.0.0.1
;nameserver     128.8.2.1
/etc/defaultdomain :
fedfond.msk.su
/etc/host.conf :
order hosts, nis, bind
multi on

Как посмотреть зоны DNS

 nslookup -ty=ns  msk.ru
 zzz=msk.ru ; named-xfer -z $zzz -f filename ns.$zzz
 egrep '^[a-z]' filename | egrep -v A | grep NS| cut -f1 | sort -u| wc

или сходить в RIPE:

Результат на февраль 1997:

Конфигурирование DNS-сервера

/etc/named.boot
; домен fedfond.msk.su          IP-сеть - 128.8.2
;
;    boot file for name server
;
directory /var/named
cache      .                     named.root
; type     domain                source host/file          backup file
primary    fedfond.msk.su        fedfond.msk.su.hosts
primary    0.0.127.in-addr.arpa  named.local
primary    2.8.128.in-addr.arpa  2.8.128.hosts.rev
----------------
; local dns file named.local 0.0.127.in-addr.arpa
;
@   IN    SOA   fedfond1.fedfond.msk.su.      moshkow.fedfond.msk.su. (
                94092101;       Serial
                10800;          Refresh
                1800;           Retry
                3600000;        Expire
                86400 );        Minimum
    IN          NS      fedfond1.fedfond.msk.su.
1   IN          PTR     localhost.
===========================
; fedfond.msk.su zone hosts file for server fedfond1.fedfond.msk.su
;
@               IN  SOA fedfond1.fedfond.msk.su. moshkow.fedfond1.fedfond.su. (
                                        94092501;       Serial
                                        10800;          Refresh
                                        1800;           Retry
                                        3600000;        Expire
                                        86400 );        Minimum
                        NS      fedfond1.fedfond.msk.su.
                        NS      ipsun.ac.msk.su.
;
                        MX      0       fedfond1.fedfond.msk.su.
                        MX      20      ipsun.ac.msk.su.
                        MX      30      mailhost.cs.msu.su.
                        MX      40      mail.gmd.de.
                        MX      50      sunic.sunet.se.
; localhost             A       127.0.0.1
$INCLUDE /var/named/fedfond-hosts-spisok
----------------
; Hosts in fedfond.msk.su zone
mailrelay       CNAME   fedfond1
mailhost        CNAME   fedfond1
mailserver      CNAME   fedfond1
newshost        CNAME   fedfond1
ftp             CNAME   fedfond1
www             CNAME   fedfond1
gopher          CNAME   fedfond1
master          CNAME   fedfond1
server          CNAME   fedfond1
;
; Host fedfond1
;
fedfond1        A       128.8.2.1
                MX      0       mailrelay
                HINFO   Motorola88110 "SVR4.1/88"
                WKS     128.8.2.1       UDP ( time domain name )
                WKS     128.8.2.1       TCP ( echo telnet discard
                                                sunrpc uucp-path systat
                                                daytime netstat nntp
                                                link chargen ftp time
                                                whois pop-2 rje finger smtp
                                                supdup hostnames domain )
;
; Host s20
;
s20             A       128.8.2.20
                MX      0       mailrelay
                HINFO   Besta/31 UNIX-V.3
besta           CNAME   s20
prilipko        CNAME   s20
;
; Host s30
;
s30             A       128.8.2.30
                A       128.9.2.30
                A       193.124.148.59
                MX      0       mailrelay
                HINFO   PC486/66DX2 UnixWare_1.1
                WKS     128.8.2.30              UDP ( time domain name )
                WKS     128.8.2.30              TCP ( echo telnet discard
                                                sunrpc uucp-path systat
                                                daytime netstat nntp
                                                link chargen ftp time
                                                whois pop-2 rje finger smtp
                                                supdup hostnames domain )
unixware                CNAME   s30
;
; Host pcat101
;
pcat101         A       128.8.2.101
                MX      0       mailrelay
                HINFO   PC486/66DX2 "MSDOS 6.2"
pc101           CNAME   pcat101
guest01         CNAME   pcat101
;
; Host pcat101
;
pcat102         A       128.8.2.102
                MX      0       mailrelay
                HINFO   PC486/66DX2 "MSDOS 6.2"
pc102           CNAME   pcat102
guest02         CNAME   pcat102
===========================
; Initial cache data for root domain servers
;
; list of servers ...
;
        99999999        IN      NS      NS.INTERNIC.NET.
        99999999        IN      NS      NS.NIC.DDN.MIL.
        99999999        IN      NS      NS1.ISI.EDU.
        99999999        IN      NS      AOS.ARL.ARMY.MIL.
        99999999        IN      NS      C.NYSER.NET.
        99999999        IN      NS      TERP.UMD.EDU.
        99999999        IN      NS      NS.NASA.GOV.
        99999999        IN      NS      NIC.NORDU.NET.
; ... and their adresses
;
NS.INTERNIC.NET.        99999999        IN      A       198.41.0.4
NS.NIC.DDN.MIL.         99999999        IN      A       192.112.36.4
NS1.ISI.EDU.            99999999        IN      A       128.9.0.107
AOS.ARL.ARMY.MIL.       99999999        IN      A       128.63.4.82
AOS.ARL.ARMY.MIL.       99999999        IN      A       192.5.25.82
C.NYSER.NET.            99999999        IN      A       192.33.4.12
TERP.UMD.EDU.           99999999        IN      A       128.8.10.90
NS.NASA.GOV.            99999999        IN      A       128.102.16.10
NS.NASA.GOV.            99999999        IN      A       192.52.195.10
NIC.NORDU.NET.          99999999        IN      A       192.36.148.17
===========================
@       IN      SOA fedfond1.fedfond.msk.su. moshkow.fedfond1.fedfond.msk.su. (
                                        94102501;       Serial
                                        10800;  Refresh
                                        1800;   Retry
                                        3600000;        Expire
                                        86400 );        Minimum
                                NS      s08.fedfond.msk.su.
                                NS      ipsun.ac.msk.su.
                                NS      ns.itep.ru.
                                NS      suncom.itep.ru.
                                NS      ns.cs.msu.su.
                                PTR     s30.fedfond.msk.su.;    Gateway
;
; Reverse-name   [ttl]          PTR     Real-name-dot
;
1                               PTR     fedfond1.fedfond.msk.su.
20                              PTR     s20.fedfond.msk.su.
30                              PTR     s30.fedfond.msk.su.
101                             PTR     pcat101.fedfond.msk.su.
102                             PTR     pcat102.fedfond.msk.su.

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