Linux ????

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Linux ????
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??? DNS?????????
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??? DNS?????????

• DNS??
• DNS??Domain Name System,??????www.szptt.net.cn(???
  ?)????????202.96.134.163???IP????DNS,???????????,
  ????202.96.134.163?????????????DNS???????,??DNS???
  ?

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??? DNS?????????
2. DNS????

• DNS???????????????,????????

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??? DNS?????????

• DNS?????????
• ??????,?????????????????????????
• ??????
• ????????,?.????
• ????????????,??????
• ?????????????????
• ????????????
• ??????DNS?????????????????
• DNS??(Zone)DNS?????????

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??? DNS?????????

• ??????????
• (1)????????
• ??CN????UK???????
• (2)????????
• l         COM????
• l         EDU??????
• l         NET??????
• l         ORG????
• l         MIL??????
• l         GOV???????

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??? DNS?????????

• ??Internet????????,???????????????,?
• FIRM??????
• SHOP?????????
• WEB?????????????
• ARTS??????????????
• REC??????????????
• INFO???????????
• NOW?????

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??? DNS?????????

• DNS?????
• DNS?????/????????????,???????????????????????
• ???????DNS??3???
• ?????????????????????????????????????????????????
  ??????????
• ????????????????????????
• ???????????????,????????????????????????,??DNS???

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??? DNS?????????

• DNS????????
• ????????
• ??????
• ???????

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??? DNS?????????

• ??????
• DNS?????????????

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??? DNS?????????

• ??????
• DNS????

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DNS?????????
??? DNS?????????

• (1)DNS???????????,?????????????????
• (2)??????????????,?????????,???????,??????????????
  ???????
• (3)?????????????,??????????????????????,??????????
  ???????????????(????)???????????
• (4)??????????????????????,?????????????????,??????
  ?,??????????????????
• (5)?????,??????????
• (6)??????????????????,???????,?????????????

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??? DNS?????????

• ??????????
• BIND???C/S??,??????????,????????????,?????????????
  ?
• ??DNS???,????????????????????(????),?????????????/
  ??????
• ??/etc/host.conf
• ??/etc/resolv.conf

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??? DNS?????????

• ????????????BIND
• ???????
• ???????BIND
• rpm qa grep bind
• ??BIND
• mount /dev/cdrom /mnt/cdrom
• cd /mnt/cdrom//RPMS
• rpm ivh bind.i386.rpmcdeject
• mount /dev/cdrom /mnt/cdrom
• cd /mnt/cdrom//RPMS
• rpm ivh bind-utils.i386.rpm
• rpm ivh redhat-config-bind.noarch.rpm
• cd
• eject

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??? DNS?????????

• ?????BIND
• ???????
• service named start ??
• ? /etc/rc.d/init.d/named start
• pstree grep named ???????

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??? DNS?????????

• ??????????
• ??????????

/etc/named.conf ?????named??,?????????????????
/var/named/named.ca ????????,???????????????
/var/named/localhost.zone ?????localhost???????IP??
/var/named/named.local ???????IP???????localhost
/var/named/name2ip.conf ???????IP??????
/var/named/ip2name.conf ?IP????????????
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??? DNS?????????

• ??????????
• ?????named.conf
• named.conf????

acl ??IP?????????
controls ??rndc?????????
include ???????????????
key ?????????
logging ?????????
option ????????
server ??????????
trusted-keys ??????DNSSEC????
zone ?????
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??? DNS?????????

• ??????????
• ?????named.conf
• option
• ????
• ????
• named.conf?????????

recursion yesno ???????DNS???,???yes
Transfer-format one-answermany-answer ??????????????????,????one-answer
Directory path ???????????????,???/var/named
Forwarders IPaddr ?????
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??? DNS?????????

• ??????????
• ?????named.conf
• Zone zone-name IN
• type ??
• file??
• ????
• named.conf????????

Type masterhintslave ???????? Master???????????? Hint???????????????? ?????? Slave?????????????
File filename ??????????????????
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??? DNS?????????

• ??????????
• /var/named/named.ca??
• ??ftp//rs.internic.net/domain/named.root
  ????????
• ??
• ????,?????????
• ???? . ,????????DNS??????,??????4??????

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??? DNS?????????

• ??????????
• ???
• ??????????????,?????????????????????????
  ??(RR)?????????
• ????
• ????????SOA RR??,?????NS RR?
• ???????????A RR? MX RR?CNAME
  RR?????????????PTR RR?
• RR?????
• name ttl IN type rdata

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??? DNS?????????

• ??????????
• ???
• ?????
• include
• generate
• origin
• ttl

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??? DNS?????????

• ??jamond.net??????
• ??
• ?????????????
• vi /etc/named.conf
• Zone jamond.net
• type master
• file jamond.net.hosts
• Zone 1.168.192.in-addr.arpa
• type master
• file 192.168.1.rev

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??? DNS?????????

• ??jamond.net??????
• ??
• ????????????
• vi /var/named/jamond.net.hosts
• ttl 1D
• origin jamond.net.
• _at_ IN SOA shrike.jamond.net.
  root.shrike.jamond.net. (
• 20060930 serial
• 86400 refresh
• 3600 retry
• 3600000 expire
• 1D) minimum
• IN NS shrike. jamond.net.
• IN A 192.168.1.200
• shrike IN A 192.168.1.200
• www IN Cname shrike

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??? DNS?????????

• ??jamond.net??????
• ??
• ????????????
• vi /var/named/192.168.1.rev
• TTL 1D
• _at_ IN SOA shrike.jamond.net.
  root.shrike.jamond.net (
• 20020930 serial
• 28800 refresh
• 14400 retry
• 3600000 expire
• 86400) minimum
• IN NS shrike.jamond.net.
• 200 IN PTR shrike.jamond.net.

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??? DNS?????????

• ??jamond.net??????
• ??
• ??
• service named restart

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??? DNS?????????

• ??DNS
• ??host????DNS
• host shrike.jamond.net
• host 192.168.1.200

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??? DNS?????????

• ??DNS
• ??nslookup????DNS
• nslookup
• gtshrike.jamond.net
• gt192.168.1.200
• gtset all
• gtset typeNS (MXCNAME)
• gtjamond.net
• gtset typeany
• gtjamond.net
• gt1.168.192.in-addr.arpa
• gtexit

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??? DNS?????????

• ??DNS???????
• ??DNS?????????????????????FQDN????IP?????
• ??
• ????????????
• vi /var/named/jamond.net.hosts
• Shrike IN A 192.168.1.201
• Shrike IN A 192.168.1.202
• ????????????
• vi /var/named/192.168.1.rev
• 201 IN PTR shrike.jamond.net.
• 202 IN PTR shrike.jamond.net.
• ????????
• rndc reload

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??? DNS?????????

• ?????????
• ?????????????????????????????????
• ??
• ????????
• vi /etc/named.conf
• Zone jamond.net
• type slave
• file jamond.net.hosts
• masters 192.168.1.200
• Zone 1.168.192.in-addr.arpa
• type slave
• file 192.168.1.rev
• masters 192.168.1.200
• ??
• service named restart

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??? DNS?????????

• ?? Bind ????,?????????
• (1)??????????????????????? ?
• (2)redhat-config-bind ?

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??? DNS?????????

• ???????

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??? DNS?????????

• ???????

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??? DNS?????????

• ???????

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??? DNS?????????

• ???????

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??? DNS?????????

• ???????

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??? DNS?????????

• ???????

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??? DNS?????????

• ??DNS?????

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??? DNS?????????

• ??DNS?????

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??? DNS?????????

• ??DNS?????

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??? DNS?????????

• Linux?DNS????????

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??? DNS?????????

• ??DNS??? ?DNS?????????,????????????,????????
  ????????DNS??? service named restart

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??? DNS?????????

• ??
• DNS???IP192.168..111 dns. linux.com.cn
• ??
• (1)????????,??????????????????????????????????????
  ???????????????IP???
• (2)????????,???????????????????????IP????????????
• ??????????
• FTP??? IP192.168..121 ftp. linux.com.cn
• WEB??? IP192.168..131 www. linux.com.cn
• cw. linux.com.cn rs.linux.com.cn
• MAIL??? IP192.168..141 mail. linux.com.cn
• SAMBA??? IP192.168..151 smb. linux.com.cn