パケットを覗いてみよう / Packet workshop for beginners

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http://example.com/abc/d.html https://yahoo.co.jp/index.html

http://example.com:80/abc/d.html ! !
http https ftp (javascript) www.yahoo.co.jp twitter.com abema.tv www.tama-st-h.local 80 443 3000 65535 index.html 123/hello.jpg ~ts13120/a.jpg a/b/c/d.mp3

http://example.com:80/abc/d.html https://yahoo.co.jp:443/def/g.html

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01
Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html lang="ja"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> <meta http-equiv="content-style-type" content="text/css"> <meta http-equiv="content-script-type" content="text/javascript"> <meta name="description" content=" & <B5@1,8 .B/2?A9>B4 4<B7=B@2?6;A0$#&1B:4 +$!& +()% * -A3A+"' "> …

• L H • H <!doctype html> <html> <head> <title></title>
</head> <body> <h1>! !</h1> <p> </p> </body> </html>

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http://example.com:80/abc/d.html http://123.45.67.89:80/abc/d.html

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$ whois yahoo.co.jp

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$ whois -h whois.jprs.jp MM14876JP

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Ethernet IP TCP HTTP HTTP

HTTP ) ( ( ) HTTP
HTTP Crystal Project - Everaldo Coelho https://www.iconfinder.com/iconsets/crystalproject

100 Information 100 Continue 200 Success 200 OK 202
Accepted 300 Redirect 301 Moved Permanently 302 Found 307 Temporary Redirect 400 Client Error 401 Unauthorized 403 Forbidden 404 Not Found 500 Server Error 500 Internal Server Error 503 Service Unavailable 504 Gateway Timeout HTTP/1.1 200 OK

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パケットを覗いてみよう / Packet workshop for beginners

パケットを覗いてみよう / Packet workshop for beginners

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