????????????? E-mail address

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URL(Universal Resource Locators or Uniform
Resource Locators )

• ?????????????????????????????????
• ???????????????? URL ??????????
• scheme//hostport/path
• URL ??????????????????? 4 ???????????????
• 1. ???????????????????????????????? (scheme)
  ???? Web, FTP, Gopher, newsgroup ???????
  ????????????????????????????????
• http ?????? Web
• ftp ?????? FTP
• gopher ?????? Gopher
• news ?????? Newsgroup
• ????????????????? // ???? ?????? news
  ?????????????? ???????? ????
• newsrec.arts.theatre

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• 2. ?????????????? (host) ????????????????????????
  ????????????????? ???? www.infonews.co.th
• 3. ????? (port) ???????? ????????????
  ??????????????????????????????? ??????????????
  ???? www.charnsak.co.th80 (Default
  ???????????????) ???? www.rimhk.ac.th
• 4. ??? (path) ????????????????? (????????????)
  ????????????????? ????????????????????????????????
  ? ?????? ????????????????????????? ????
  ftp//ftp.microsoft.com/win95/internet.doc

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DNS (Domain Name System)

• ????????????????????(Host)??????? IP address ????
  ???? ???IP address ????????????? ????
• www.rimhk.ac.th ?? IP address ????
  203.151.42.1
• ????????? 2 ??? ???
• Forward mapping ??????????????????? ????
• ???? www.rimhk.ac.th ??????? 203.151.42.1
• Reverse mapping ??????????????????? ????
• ???? 203.151.42.1 ??????? www.rimhk.ac.th

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Domain name

• ???????????????????????(Node?????????????????????
  ???????) ??????????????????? 63 ????????
  ???????????? ???(.) ??????????????????????
  ????????????????????????
• 1. arpa ?????????????????????????????????? ????
  80.204.44.202.in-addr.arpa ???????????????
  www.school.net.th
• 2. generic domain ??????????? 3
  ?????????????????????????????? ??????
• com ???????????????
• edu ??????????????
• gov ??????????????

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• int ???????????????????
• mil ????????????
• net ?????????????????????
• org ?????????? ?
• 3. Country domain ???????????? 2 ????????????????
  ? ????
• th -gt thailand
• uk --gt united kingdom
• ja --gt japan
• ta --gt taiwan
• ????? us ????????????????????? generic domain
  ???????

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Http//www.kmitl.ac.th
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????????????? E-mail address
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E-mail address ???????

• E-mail (?????) ????????????????????????????????
  ???????????????????????? ?????????????????????????
  ????????????? E-mail Address (????????????)
  ????????????????? ????
• rnarumon_at_hotmail.com
• moni99_at_thaimail.com
• nrodniam_at_maildozy.com

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?????????????? E-mail address

• ????????????????????????????????????????
• ?????????????????????????????????????(ISP)
• ????????????????????????????????
• ??? browser ??????? web site ???????????????
• ????????? (????????????????????/?????????)
• ????? 1 ??????????????? E-mail ??????????????
• username_at_domain
• ( "_at_" ??????? at )
• username ??? ????????????????????
• domain ??? ?????????? web site
  ????????????????????????????????

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??????????????????????????????

• ???????????????
• AmExMail
• Bangkok
• DoraMail
• Hotmail
• iName
• Net_at_ddress
• PoppyMail
• RocketMail
• SiamMail
• SoftHome
• Thaimail
• You'vegotmail
• Yahoo Mail

• E-mail Address
• yourname_at_usa.net
• yourname_at_bangkok.com
• yourname_at_doramail.com
• yourname_at_hotmail.com
• ???????????????
• Net_at_ddress
• yourname_at_poppymail.com
• yourname_at_yahoo.com
• yourname_at_siammail.com
• yourname_at_softhome.com
• yourname_at_thaimail.com
• yourname_at_youvegotmail.net
• yourname_at_yahoo.com

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