June 2016
Beginner to intermediate
376 pages
8h 58m
Japanese
Content preview from データ分析によるネットワークセキュリティ
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
9.2
通信と探査
187
9.2
通信と探査
本書で説明したように、ネットワーク監視の多くは受動的に行う。しかし、能動的な監視と検査を
するべき状況も多い。この節で紹介するツールは、能動的にネットワークの調査や探査（プローブ）
を行う。
本書の目的に照らして、監視インフラを能動的に補うツールに重点を置く。これらのツールの目的
は、サンプルセッションの提供（netcat）、能動的な探査による受動的な監視の補足（nmap）、特定の
監視設定を検査するために工夫されたセッションの提供（Scapy）である。
9.2.1
netcat
netcat（http://nc110.sourceforge.net）は、Unixコマンドラインツールで出力をTCPソケットや
UDPソケットにリダイレクトできる。netcatは、ソケットをパイプアクセス可能なありふれたUnix
FIFOに変える。またnetcatを使うと、クライアント、サ
ーバ、プロキシ、ポートスキャナを簡単に
実装できる。
netcat host port
を使うと、netcatを簡単に呼び出すことができ、指定のホストとポート番号へ
のTCPソケットを作成する。以下のように標準のUnixリダイレクトを使って入力をnetcatに渡し、
出力を読み込む。
$ echo "GET /" | netcat www.oreilly.com 80
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
... ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.