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・H24/01/02
 Microsoft MVPを受賞しました
・H23/11/18
 MCTの憂鬱さんと相互リンクを張っていただきました^^
・H23/09/10
 プログラミング生放送でスピーカーさせていただきました^^ ・H22/12/18
 わんくま同盟でスピーカしました^^
さて、来年はどんな年になるかな。予想が当たるといいなぁ。
・H22/07/17
 わんくま同盟でスピーカしました^^
技術系のセッションは久しぶり。VB! VB!
・H22/03/13
 Tech FieldersでLTのスピーカしました^^
・H21/12/12
 わんくま同盟でスピーカしました^^
最近はずっとLT担当だったので、ちょっと新鮮でした^^
・H20/11/18
 Tech Fielders セミナー 大阪の
 Lightning Talkで優勝しました^^
・H20/8/23
 わんくま同盟で2回目のスピーカしちゃいました
 WCFと戯れてみました^^
・H20/5/17
 わんくま同盟でスピーカしちゃいました^^
 ちゃんとスピーカー持参しましたよんw
・H20/2/22
 なめ猫の参加証もらいました^^
・H20/1/22
 テンプレートを変えてみました^^
・H19/7/23
 ACEプログラムで、ナップサックをもらった上、工具セットももらえることになりました^^
・H19/1/11
 1が並ぶ縁起の良い日に投稿開始!。今後ともお付き合いよろしくお願いします
・H18/10/29
 参加させていただきました^^
ド・初心者ですがどうぞよろしくお願いします。

↓うーん、仕事しろ^^;
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WPADをDNSから引いてみる

元ネタ:Windows 8 で推奨されるプロキシ設定方法

Windows 8でもWPAD(Web Proxy Auto-Discovery Protocol)を使う方法がお勧めだそうな。
確かにクライアントして非常に便利なこの機能も、サーバーから見ると問題をはらんでいたりします
DHCPを使う方法なら良いのですが、DNSを使う方法ですと、WPADが自動探索で変な情報が返されてヤヴァイページに誘導(*1)される可能性があります。

これを防ぐため、Windows Server 2008以降では、WPADは「グローバル クエリ禁止リスト」に追加されています。この状態では、クライアントがWPADをDNSのクエリで情報が得られません(*2)

というとこで、ちゃんとWPADのエントリ先に情報があってクライアントに返せることが確認できたらグローバル禁止リストから外してあげましょう(*3)。
デフォルトでは、wpadとisatapが登録されています。以下のコマンドから何が登録されているのかを確認の上、wpadを外して再登録しましょう

■確認用のコマンド
dnscmd /info /globalqueryblocklist
image
■リストの更新(wpadとisatapが登録されていたので、isatapのみにする)
dnscmd /config /globalqueryblocklist istap
image

元に戻すには、再度wpadを追加してください。
dnscmd /config /globalqueryblocklist wpad istap

*1:「Microsoft WindowsにおけるWebプロキシ自動発見(WPAD)の脆弱性に関する 注意喚起 」
http://jprs.jp/tech/notice/2007-12-21-Web-Proxy-Auto-Discovery-alert.html
「グローバル クエリ禁止リストを管理する」
http://technet.microsoft.com/ja-jp/library/cc794902(WS.10).aspx

*2:グローバル クエリ禁止リストに追加された状態でクライアントからクエリがあった時(警告:7600 ソース:DNS)
image

*3:DNS 禁止リストからの WPAD の削除
http://technet.microsoft.com/ja-jp/library/cc441517.aspx

投稿日時 : 2013年2月2日 23:38

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