ohtan

<h3>■バージョン2.1.0以前は下記にあります</h3>
<p>http://cmf.ohtanz.com/spam-bye2.html</p>
<h3>■特徴</h3>
<p>日本語に特化して他言語圏spamを高確率で排除します</p>
<ul>
<li>1.ひらがなが含まれていない</li>
<li>2.日本語(2バイト以上の文字)が含まれていない</li>
<li>3.1行の文字数がN文字を超えている</li>
<li>4.連続した改行の合計がN個を超えている</li>
<li>5.URLが含まれている</li>
<li>6.NGワードが含まれている</li>
<li>7.URLがURIBLデータベースに登録されている</li>
<li>
<p>8.投稿者のIPがDNSBLデータベースに登録されている</p>
</li>
<li>
<p>チェック項目を順位付けられ早期に判別した場合残りの検査をしない為、処理が早く終わります</p>
</li>
<li>1、2は日本語投稿で必ず出現する文字</li>
<li>3はspamはあまり改行せずに投稿することがあるため</li>
<li>4は他者の投稿を読ませない等の妨害で改行を多用するため</li>
<li>5はURLの誘導</li>
<li>6は禁止語句</li>
<li>7、8は公平外部登録ブラックリスト照会</li>
<li>6、7、8は処理に時間が掛かる為、検査の順位は下位を推奨</li>
<li>6、7、8は検査項目が多いとタイムアウトする可能性があるため簡易検査程度に留めてください</li>
</ul>
<h3>Arbitrary section</h3>
<h4>■See also(DNSBL/URIBL)</h4>
<ul>
<li>Barracuda Reputation Block List(b.barracudacentral.org)</li>
</ul>
<blockquote>
<p>http://www.barracudacentral.org/rbl</p>
</blockquote>
<ul>
<li>RBL.JP(url.rbl.jp/dyndns.rbl.jp/notop.rbl.jp)</li>
</ul>
<blockquote>
<p>http://www.rbl.jp/allrbl.html</p>
</blockquote>
<ul>
<li>SURBL(multi.surbl.org)</li>
</ul>
<blockquote>
<p>http://www.surbl.org/</p>
</blockquote>
<ul>
<li>URIBL(multi.uribl.com)</li>
</ul>
<blockquote>
<p>http://www.uribl.com/</p>
</blockquote>


spam-byebye

コメントスパム対策用プラグイン(SPAM-BYEBYE)

Automattic

Donncha O Caoimh (a11n)

<p>This plugin adds a stylesheet or image to your blog’s html source code. When a browser loads that stylesheet or image a cookie is dropped. If that user then leaves a comment the cookie is checked. If it doesn’t exist the comment is marked as spam.<br />
The plugin can also check how long it took a user to enter a comment. If it’s too fast it’s probably a spam bot. How fast can a legitimate user enter their name, email, web address and enter a well thought out comment?</p>
<p>For the adventurous, add these lines to your .htaccess and it will block spam attempts before they ever get to WordPress. Replace the Xs with the cookie that was set in your browser after viewing your blog. You can also find the cookie value by examining the page source code and looking for “css.php?k=XXXXXXXXXXXXXXXXXXX”. Make sure the lines go above the standard WordPress rules.</p>
<pre><code>    RewriteCond %{HTTP_COOKIE} !^.*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.*$
    RewriteRule ^wp-comments-post.php - [F,L]
</code></pre>
<p>If you use WordPress MU, replace wp-comments-post.php above with wp-signup.php to block spam signups.</p>
<pre><code>    RewriteCond %{HTTP_COOKIE} !^.*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.*$
    RewriteRule ^wp-signup.php - [F,L]
</code></pre>


Cookies for Comments

If you don't use any other spam filter plugins, then you can rely on this to stop spam comments for sure!

Must have, if you don't use any other spam filters!

I'd been getting a dozen spams a day on two of my sites. We installed "Stop Spam Comments" on one and "Cookies for Comments" on the other. Both worked perfectly. No more spam. Thanks!



very easy and no more spam!

Sets a cookie on a random URL that is then checked when a comment is posted. If the cookie is missing the comment is marked as spam.

spam-byebye vs Cookies for Comments