1 / 12

網管訓練營

網管訓練營. Applications 講師 : 呂志鴻. DNS (Domain Name System). 什麼是 Domain Name? 正解 (forward domain) 例 : ccu.edu.tw 反解 (reverse domain) 例 : 2.5.123.140.in-addr.arpa FQDN (fully-qualified domain name). DNS (Domain Name System). DNS server 階層式架構 : 查詢 正查 , 反查. edu.tw. ncku.edu.tw.

garan
Download Presentation

網管訓練營

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 網管訓練營 Applications 講師:呂志鴻

  2. DNS (Domain Name System) • 什麼是 Domain Name? • 正解 (forward domain) • 例: ccu.edu.tw • 反解 (reverse domain) • 例: 2.5.123.140.in-addr.arpa • FQDN (fully-qualified domain name)

  3. DNS (Domain Name System) • DNS server • 階層式架構: • 查詢 • 正查, 反查 edu.tw ncku.edu.tw ccu.edu.tw ee.ccu.edu.tw dorm.ccu.edu.tw

  4. DNS (Domain Name System) • Alias Name • 例: www.ccu.edu.tw, hero.ccu.edu.tw • UNIX 指令: nslookup • 設定 • 宿舍區 DNS server – 140.123.254.21 • win2000 干擾 DNS 運作?

  5. Router • 為何需要 router? 什麼是 route? www.yahoo.com u0123a.dorm.ccu.edu.tw

  6. Router • routing table • 利用 subnet mask 來簡化 table a 123.123.2.34 c 100.200.123.8 b 111.222.33.55

  7. Router • 查看機器的 routing table • in MS – route print • in UNIX – netstat -r • 簡單的偵錯: • in MS – tracert • in UNIX – traceroute

  8. SMTP • 用來收發 email user agent mail server mail server SMTP user agent Netscape Header: (from, to, subject…) Eudora Body: (信內容, 附加檔…) Mail

  9. SMTP • Simple Mail Transfer Protocol • 指令: HELO, MAIL FROM:, RECP TO:, QUIT client server 信的內容是… hello hello 我收到了 我是某某 byebye 某某你好 byebye 我要送信給甲 好的,我這的確 有甲這個人

  10. SMTP • 通常配搭 POP3 或 IMAP 來使用 • 設定 • 收信主機: incoming.ccu.edu.tw • 發信主機: outgoing.ccu.edu.tw

  11. Proxy • proxy server 的功用: • 省頻寬, 省時間 • 方式: • cache 140.123.1.254 140.123.215.5 www.freebsd.org 140.123.216.6

  12. Proxy • 設定 proxy 可參考: • http://proxy.ccu.edu.tw/proxy/index.html

More Related