Techniques of System Administration #10 <kohya@cuc.ac.jp> 3 2007/01/15 2007/01/22 2007/02/09 (1) IP 80www 25SMTP (2) 13 (3) UNIXemacs 216 Web 1
DNS DNS DNS DNS 13 DNS IP.com.jp.org.org www.rca.co.jp 210.155.141.38 13 DNS.com.jp.org.com.jp.org yotsukaido.org yotsukaido.org yotsukaido.org 2
.com.jp.org.com.jp.org yotsukaido.org yotsukaido.org www.yotsukaido.org mail.yotsukaido.org www.yotsukaido.org mail.yotsukaido.org yotsukaido.org value-domain http://www.value-domain.com/ 3
.com/.net/.org/.info/.biz yotsukaido org 790 10 OK http://www.google.com/a/?n=a Googlegmail gmail Web Mail gmail Value-domain 4
URL gmail 5
50 Google Google DNS DNS.org yotsukaido.org value-domain DNS DNS 6
DNS gmail WWWgoogle gmail DNS 48 DNS 7
Web Web 8
Web Google Web kohya@cuc.ac.jp (1) 210.155.141.43/28 Web () 192.168.0.1/24 192.168.0.2/24 DB () ( ) 9
DB (2) DB 192.168.0.1/26 192.168.0.10/26 192.168.0.65/26 192.168.0.70/24 (/26) A B 192.168.0.1/26 192.168.0.65/26 A BB A 192.168.0.10/26 192.168.0.70/24 AB TCP/IP BA IP256 202.244.39.0/24 10
NIC Chiba Default University 210.198.9.9 of Commerce 202.244.39.0/29 202.244.39.10 210.198.9.126/24 202.244.39.16/28 202.244.39.11 202.244.39.32/27 202.244.39.12 202.244.39.64/26 202.244.39.13 202.244.39.128/25 202.244.39.14 202.244.39.9/29 202.244.39.10/29 Default 202.244.39.9 202.244.39.8 202.244.39.15 202.244.39.1/29 202.244.39.11/29 Default 202.244.39.9 202.244.39.17/28 202.244.39.12/29 Default 202.244.39.9 202.244.39.33/27 202.244.39.13/29 Default 202.244.39.9 202.244.39.65/26 202.244.39.14/29 Default 202.244.39.9 202.244.39.129/25 210.198.9.1/24 202.244.39.0 202.244.39.7 202.244.39.16 202.244.39.31 202.244.39.32 202.244.39.63 202.244.39.64 202.244.39.127 202.244.39.128 202.244.39.255 11