<p>ネットワーク上にPCおよび周辺機器が増えてくると管理が大変になります。「<a href&equals;"http&colon;&sol;&sol;www&period;e-realize&period;com&sol;netenum&period;html" target&equals;"&lowbar;blank">NetEnum4<&sol;a>」はホスト名、IPアドレス、MACアドレス、ベンダー名を一覧表示してくれる便利なユーティリティで、株式会社リアライズが提供しているフリーウェアです。<&sol;p>&NewLine;<p>最新版ダウンロードは<&sol;p>&NewLine;<ul>&NewLine;<li>［インストーラ付］<&sol;li>&NewLine;<li>［インストーラ無］<&sol;li>&NewLine;<&sol;ul>&NewLine;<p>があるので、いずれかをダウンロードしてインストールする<br &sol;>&NewLine;<a href&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;155338&lowbar;netenum&period;jpg"><img data-attachment-id&equals;"2807" data-permalink&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;archives&sol;2804&sol;20150504&lowbar;155338&lowbar;netenum" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;155338&lowbar;netenum&period;jpg&quest;fit&equals;747&percnt;2C942&amp&semi;ssl&equals;1" data-orig-size&equals;"747&comma;942" data-comments-opened&equals;"1" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;0&quot&semi;&rcub;" data-image-title&equals;"20150504&lowbar;155338&lowbar;netenum" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;155338&lowbar;netenum&period;jpg&quest;fit&equals;317&percnt;2C400&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;155338&lowbar;netenum&period;jpg&quest;fit&equals;660&percnt;2C832&amp&semi;ssl&equals;1" class&equals;"alignnone size-medium wp-image-2807" src&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;155338&lowbar;netenum-317x400&period;jpg" alt&equals;"20150504&lowbar;155338&lowbar;netenum" width&equals;"317" height&equals;"400" &sol;><&sol;a><&sol;p>&NewLine;<p>プログラムは<span style&equals;"color&colon; &num;ff0000&semi;">管理者として実行する<&sol;span>必要があり、プログラムもしくはショートカットを右クリック＞［管理者として実行］をクリック。<&sol;p>&NewLine;<p><a href&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165338&lowbar;netenum&period;jpg"><img data-attachment-id&equals;"2808" data-permalink&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;archives&sol;2804&sol;20150504&lowbar;165338&lowbar;netenum" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165338&lowbar;netenum&period;jpg&quest;fit&equals;499&percnt;2C619&amp&semi;ssl&equals;1" data-orig-size&equals;"499&comma;619" data-comments-opened&equals;"1" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;0&quot&semi;&rcub;" data-image-title&equals;"20150504&lowbar;165338&lowbar;netenum" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165338&lowbar;netenum&period;jpg&quest;fit&equals;322&percnt;2C400&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165338&lowbar;netenum&period;jpg&quest;fit&equals;499&percnt;2C619&amp&semi;ssl&equals;1" class&equals;"alignnone size-medium wp-image-2808" src&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165338&lowbar;netenum-322x400&period;jpg" alt&equals;"20150504&lowbar;165338&lowbar;netenum" width&equals;"322" height&equals;"400" &sol;><&sol;a><&sol;p>&NewLine;<p>ファイル＞［検索］をクリック<&sol;p>&NewLine;<p><a href&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165502&lowbar;netenum&period;jpg"><img data-attachment-id&equals;"2809" data-permalink&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;archives&sol;2804&sol;20150504&lowbar;165502&lowbar;netenum" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165502&lowbar;netenum&period;jpg&quest;fit&equals;430&percnt;2C260&amp&semi;ssl&equals;1" data-orig-size&equals;"430&comma;260" data-comments-opened&equals;"1" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;0&quot&semi;&rcub;" data-image-title&equals;"20150504&lowbar;165502&lowbar;netenum" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165502&lowbar;netenum&period;jpg&quest;fit&equals;400&percnt;2C242&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165502&lowbar;netenum&period;jpg&quest;fit&equals;430&percnt;2C260&amp&semi;ssl&equals;1" class&equals;"alignnone size-medium wp-image-2809" src&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165502&lowbar;netenum-400x242&period;jpg" alt&equals;"20150504&lowbar;165502&lowbar;netenum" width&equals;"400" height&equals;"242" &sol;><&sol;a><&sol;p>&NewLine;<p>検索方法を設定する画面が出てきますが、通常はそのまま右下の検索をクリック<&sol;p>&NewLine;<p><a href&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165519&lowbar;netenum&period;jpg"><img data-attachment-id&equals;"2810" data-permalink&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;archives&sol;2804&sol;20150504&lowbar;165519&lowbar;netenum" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165519&lowbar;netenum&period;jpg&quest;fit&equals;647&percnt;2C356&amp&semi;ssl&equals;1" data-orig-size&equals;"647&comma;356" data-comments-opened&equals;"1" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;0&quot&semi;&rcub;" data-image-title&equals;"20150504&lowbar;165519&lowbar;netenum" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165519&lowbar;netenum&period;jpg&quest;fit&equals;400&percnt;2C220&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165519&lowbar;netenum&period;jpg&quest;fit&equals;647&percnt;2C356&amp&semi;ssl&equals;1" class&equals;"alignnone size-medium wp-image-2810" src&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165519&lowbar;netenum-400x220&period;jpg" alt&equals;"20150504&lowbar;165519&lowbar;netenum" width&equals;"400" height&equals;"220" &sol;><&sol;a><&sol;p>&NewLine;<p>スキャン開始され検索中&&num;8230&semi;と表示されます。結果が出るまで少し時間がかかります。<&sol;p>&NewLine;<p><a href&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165547&lowbar;netenum&period;jpg"><img data-attachment-id&equals;"2811" data-permalink&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;archives&sol;2804&sol;20150504&lowbar;165547&lowbar;netenum" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165547&lowbar;netenum&period;jpg&quest;fit&equals;291&percnt;2C117&amp&semi;ssl&equals;1" data-orig-size&equals;"291&comma;117" data-comments-opened&equals;"1" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;0&quot&semi;&rcub;" data-image-title&equals;"20150504&lowbar;165547&lowbar;netenum" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165547&lowbar;netenum&period;jpg&quest;fit&equals;291&percnt;2C117&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165547&lowbar;netenum&period;jpg&quest;fit&equals;291&percnt;2C117&amp&semi;ssl&equals;1" class&equals;"alignnone size-full wp-image-2811" src&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165547&lowbar;netenum&period;jpg" alt&equals;"20150504&lowbar;165547&lowbar;netenum" width&equals;"291" height&equals;"117" &sol;><&sol;a><&sol;p>&NewLine;<p>しばらくすると検索結果が表示されます。MACアドレスはすべて表示されましたが、<span style&equals;"color&colon; &num;ff0000&semi;">ホスト名とベンダー名は不明も何個か出現<&sol;span>。<&sol;p>&NewLine;<p><a href&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165759&lowbar;netenum&period;jpg"><img data-attachment-id&equals;"2812" data-permalink&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;archives&sol;2804&sol;20150504&lowbar;165759&lowbar;netenum" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165759&lowbar;netenum&period;jpg&quest;fit&equals;1080&percnt;2C605&amp&semi;ssl&equals;1" data-orig-size&equals;"1080&comma;605" data-comments-opened&equals;"1" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;0&quot&semi;&rcub;" data-image-title&equals;"20150504&lowbar;165759&lowbar;netenum" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165759&lowbar;netenum&period;jpg&quest;fit&equals;400&percnt;2C224&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165759&lowbar;netenum&period;jpg&quest;fit&equals;660&percnt;2C370&amp&semi;ssl&equals;1" class&equals;"alignnone size-medium wp-image-2812" src&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165759&lowbar;netenum-400x224&period;jpg" alt&equals;"20150504&lowbar;165759&lowbar;netenum" width&equals;"400" height&equals;"224" &sol;><&sol;a><&sol;p>&NewLine;<p>ホスト名不明の部分をクリックして詳細画面を表示。ホスト名とかを保存できるようです。<&sol;p>&NewLine;<p><a href&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165809&lowbar;netenum&period;jpg"><img data-attachment-id&equals;"2813" data-permalink&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;archives&sol;2804&sol;20150504&lowbar;165809&lowbar;netenum" data-orig-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165809&lowbar;netenum&period;jpg&quest;fit&equals;501&percnt;2C402&amp&semi;ssl&equals;1" data-orig-size&equals;"501&comma;402" data-comments-opened&equals;"1" data-image-meta&equals;"&lbrace;&quot&semi;aperture&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;credit&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;camera&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;caption&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;created&lowbar;timestamp&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;copyright&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;focal&lowbar;length&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;iso&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;shutter&lowbar;speed&quot&semi;&colon;&quot&semi;0&quot&semi;&comma;&quot&semi;title&quot&semi;&colon;&quot&semi;&quot&semi;&comma;&quot&semi;orientation&quot&semi;&colon;&quot&semi;0&quot&semi;&rcub;" data-image-title&equals;"20150504&lowbar;165809&lowbar;netenum" data-image-description&equals;"" data-image-caption&equals;"" data-medium-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165809&lowbar;netenum&period;jpg&quest;fit&equals;400&percnt;2C321&amp&semi;ssl&equals;1" data-large-file&equals;"https&colon;&sol;&sol;i0&period;wp&period;com&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165809&lowbar;netenum&period;jpg&quest;fit&equals;501&percnt;2C402&amp&semi;ssl&equals;1" class&equals;"alignnone size-medium wp-image-2813" src&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;wp-content&sol;uploads&sol;2015&sol;05&sol;20150504&lowbar;165809&lowbar;netenum-400x321&period;jpg" alt&equals;"20150504&lowbar;165809&lowbar;netenum" width&equals;"400" height&equals;"321" &sol;><&sol;a><&sol;p>&NewLine;<p>これを使えば設置している機器のIPアドレスがわからなくなったとき、ベンダー名などを参考にしながら推定できそうですね。また不正アクセスとかもわかるかもしれません。<&sol;p>&NewLine;<p>iOS用に<a href&equals;"https&colon;&sol;&sol;bacque&period;biz&sol;archives&sol;4644">Net Analyzer<&sol;a>がリリースされているのでそちらでもLAN検索できます。<&sol;p>&NewLine;<p>&nbsp&semi;<&sol;p>&NewLine;