Tobiask

Simple Trackback Validation Plugin performs a simple but very effective test on all incoming trackbacks in order to stop trackback spam. Now with topsy.com blocker.
How it works:
When a trackback is received, this plugin
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checks for topsy.com trackbacks and marks this as spam.
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checks if the IP address of the trackback sender is equal to the IP address of the webserver the trackback URL is referring to. This reveals almost every spam trackback (more than 99%) since spammers do usually use bots which are not running on the machine of their customers.
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retrieves the web page located at the URL included in the trackback. If the page doesn’t a link to your blog, the trackback is considered to be spam. Since most trackback spammers do not set up custom web pages linking to the blogs they attack, this simple test will quickly reveal illegitimate trackbacks. Also, bloggers can be stopped abusing trackback by sending trackbacks with their blog software or webservices without having a link to the post.
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There are several options available and you also can enable logging to get all actions, which are performed by the plugin, logged. Also, you can select how to treat spam trackbacks (do not save in the database or mark as spam or place into moderation) and several other stuff.
Please visit <a href="http://sjmp.de/blogging/simple-trackback-validation-with-topsy-blocker/" title="Simple Trackback Validation with Topsy Blocker" rel="nofollow ugc">the official website</a> for further details and the latest information on this plugin.

Simple Trackback Validation with Topsy Blocker

REPLACEMENT of the original Simple Trackback Validation Plugin from Miachel. Performs a simple but very effective test on all incoming trackbacks in o …

WebberZone

Ajay

Spammers target old posts in a hope that you won’t notice the comments on them. Why not stop them in their tracks by just shutting off comments and pingbacks? <a href="https://webberzone.com/plugins/autoclose/" rel="nofollow ugc">Auto-Close Comments, Pingbacks and Trackbacks</a> lets you automatically close comments, pingbacks and trackbacks on your posts, pages and custom post types.
You can also choose to keep comments, pingbacks, or trackbacks open on certain posts, pages or custom post types. Just enter a comma-separated list of post IDs in the Settings page.
An extra feature is the ability to delete post revisions or limit their number.
Found a bug or want to contribute? PRs and issues welcome on <a href="https://github.com/WebberZone/autoclose" rel="nofollow ugc">GitHub</a>. For help, use the <a href="https://wordpress.org/support/plugin/autoclose" rel="ugc">support forum</a> or <a href="https://webberzone.com/support/" rel="nofollow ugc">premium support</a>.
<h3>Key Features</h3>
<ul>
<li>Close (or open) comments on posts, pages, attachments and even Custom Post Types</li>
<li>Close (or open) pingbacks and trackbacks as well across all post types. You can also choose to delete them</li>
<li>Schedule a cron job to automatically close comments, pingbacks and trackbacks daily</li>
<li>Delete all post revisions or limit the number of revisions by post type</li>
<li>Exclude specific post IDs from auto-close</li>
<li>Exclude posts in specific categories, tags, or any taxonomy term from auto-close</li>
<li>Reopen comments automatically when a post is updated, with a configurable open window</li>
<li>Receive an email summary after each scheduled cron run showing what was closed or deleted</li>
<li>Block self-pings and custom ping URLs</li>
<li>Schedule the closing of comments, pingbacks, and trackbacks for the current post</li>
</ul>

Auto-Close Comments, Pingbacks and Trackbacks

Auto-Close keeps your site clean by automatically closing comments, pingbacks, and trackbacks—so you can focus on content, not cleanup.

Simple Trackback Validation with Topsy Blocker vs Auto-Close Comments, Pingbacks and Trackbacks