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1 SPARCS 11 Sunguard
2 WEB? Basic Concept of WEB Page. 02
3 WEB? Basic Concept of WEB Page. 03
4 WEB? Basic Concept of WEB Page. 04
5 WEB? Basic Concept of WEB Page. 02
6 WEB? Brief History of WEB Who & Why Who Created WEB? - Tim Berners Lee - Robert Cailliau CERN laboratory in Switzerland CERN = European Council for Nuclear Research Why made WEB? To make Information Interchange easily and effectively
7 WEB? Brief History of WEB Tim Berners Lee Who is Tim Berners Lee? - The Father of World Wide Web - Developed Enquire WWW - Designed >> HTTP(HyperText Transfer Protocol) HTML(HyperText Markup Language) URL(Uniform Resource Locator) - Developed Web Browser, Mosaic - Established W3C(World Wide Web Consortium)
8 Enquire!? WEB? Brief History of WEB Enquire & Mosaic - This concept is that Wherever computer is exists, if we can read data of it, that will be able to compose the huge information space. Mosaic!? - The first Web Browser!! - The first Multimedia GUI program!! - It had been developed since 1987, but in 1997(January 7 th ), it stopped. (After story Mark Andreesen & James Clark Mosaic Communications Corp. Spyglass Mosaic Internet Explorer(Licensed by Microsoft.)
9 WEB? What kinds of? Introduction of Web Browser - Internet Explorer, Mozilla Firefox, Opera, Safari, Google Chrome, Navigator, Avant, Flock, Kmelon, MineField, SeaMonkey, Shiretoko, WebMaster, JW Browser, Road Browser, The World, etc.
10 WEB? Introduction of Web Browser But, Now suppose Web Standards!! Something is different What is that? HTTP Web Browser HTML, XML, XHTML, Graphic File Format, CSS, JAVAscript(DHTML), etc. Web Server And TRANSLATE them!!
11 as Software WEB? Brief Introduction for Web Server - Client/Server Model & Request/Response - Kinds of PROGRAM - Port Number : 80 - Examples : APACHE, IIS, LOTUS DOMINO SERVER, etc.
12 WEB? Brief Introduction for HTTP HTTP(Hyper Text Transfer Protocol) - This is PROTOCOL! - Between Client & Server, this is the Request/Response Protocol Request Response HTML, CSS, JavaScript, etc. + Error Code
13 WEB? Brief Introduction for URL URL(Uniform Resource Locator) - Form! & Protocol! - We can manage and describe the addresses of accessible resources easily with URL Form of URL URL = Protocol + Domain Name(or IP address) + Directory Telnet, FTP, HTTP - Telnet is the method that makes clients who have the authority to use the host computer be able to access to other s host computer remotely. - This is also protocol which is based on TCP/IP - Difference with FTP, HTTP is that client can Log on
14 WEB? Brief Introduction for URL URL(Uniform Resource Locator) - Form! & Protocol! - We can manage and describe the addresses of accessible resources easily with URL Form of URL URL = Protocol + Domain Name(or IP address) + Directory Telnet, FTP, HTTP - File Transfer Protocol - To transfer files between computer and computer. - Based on TCP/IP - Security Issue : Password is not encrypted. SFTP(through SSH), SCP(Secure CoPy)
15 WEB? Brief Introduction for URL URL(Uniform Resource Locator) - Form! & Protocol! - We can manage and describe the addresses of accessible resources easily with URL Form of URL URL = Protocol + Domain Name(or IP address) + Directory Telnet, FTP, HTTP - Explained before So! SKIP
16 WEB? Brief Introduction for URL URL(Uniform Resource Locator) - Form! & Protocol! - We can manage and describe the addresses of accessible resources easily with URL Form of URL URL = Protocol + Domain Name(or IP address) + Directory Server Name + Group(Apparatus) Name + Characteristic Code
17 WEB? Brief Introduction for URL URL(Uniform Resource Locator) - Form! & Protocol! - We can manage and describe the addresses of accessible resources easily with URL Form of URL URL = Protocol + Domain Name(or IP address) + Directory
18 WEB? Brief Introduction for HTML HTML(Hyper Text Markup Language) - Markup Language!!(with CSS, Script) : Describe how to show Texts or Images on Web Browser - Be formed with Tag attributes What kinds of?(doctypes) Strict, Transitional, Frameset Details about HTML
19 ? What is ? Electronic Mail BBUE-ING! BBUE-ING! (Electronic Mail) - A method of exchanging digital messages from an author to one or more recipients - Address : User_ID@Mail_Server_Name
20 슬라이드쇼가끝났습니다. 끝내려면마우스를클릭하십시오.
21 ? Brief Introduction for Principle of Send & Receive
22 ? Brief Introduction for Principle of Send & Receive
23 ? Sending & Receiving MUA(Mail User Agent) Write & Send MUA(Mail User Agent) Receive & Read MDA(Mail Delivery Agent) Mail Server MDA(Mail Delivery Agent) Mail Server MTA(Mail Transfer Agent)
24 ? What kinds of Protocols Basic Concept - IMAP (Internet Message Access Protocol) - POP3 (Post Office Protocol 3) - SMTP (Simple Mail Transfer Protocol) - HTTP (HyperText Transfer Protocol)
25 ? Protocols MUA(Mail User Agent) Write & POP3 Send IMAP HTTP MDA(Mail Delivery Agent) Mail Server MUA(Mail User Agent) Receive & POP3 Read IMAP HTTP MDA(Mail Delivery Agent) Mail Server SMTP MTA(Mail Transfer Agent)
26 ? Protocol - SMTP SMTP(Simple Mail Transfer Protocol) - Based on TCP/IP - Used by the Mail Transfer Agent(MTA) > To deliver your to the recipient's mail server - Can only be used to send s, not to receive them - Depending on your network / ISP settings, you may only be able to use the SMTP protocol under certain conditions - Port 25 - Secure SMTP(SSMTP) : port 465
27 ? Protocol POP3 POP3(Post Office Protocol 3) - Provides a simple, standardized way for users > To access mailboxes > To download messages to their computers (Mail Server user s Local computer) - Users can choose to leave copies of their s on the server - The advantage :: Once messages are downloaded on users local computer, users can read their s when they are on off-line. - But users might read all messages which include Spam-mails, and so on when they are using this protocol to download messages to local computer. - Port Secure POP3(SSH-POP) : port 995
28 ? Protocol - IMAP IMAP(Internet Message Access Protocol) - A standard protocol for accessing from a user s local server - A client/server protocol in which is received - As this requires only a small data transfer, this works well even over a slow connection such as a modem - Port Secure IMAP(IMAP4-SSL) : port IMAP4 over SSL : port 993
29 ? POP3 and IMAP
30 ? ; Header Header & Body - This header keeps important resources - Users can t see this - Server Name, Message ID, Send Date/Time, Send Route, Encoding setting Language Information, etc. ; Body - Contents and Messages in - Attachments in
31 ! !!
32 Mailing List? What is Mailing List? Mailing List is JUST MAILING LIST!
33 Mailing List? How does it work? OH? Mailing List?! Mail Server (sparcs.org) /etc/aliases /home/sparcs/mail/aliases.d/wheel-seminar bbashong, rodumani, sunguard, boolgom, overmania, podo, alphamin, leeopop, gangok, cling, grandmarnier, etc.
34 Reference Where you can get more information
35 END Thank you for listening! SunGuard
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