Scott Reilly

This plugin records the IP address of the original post author when a post first gets created.
The admin listing of posts is amended with a new “Author IP” column that shows the IP address of the author who first saved the post.
The plugin is unable to provide IP address information for posts that were created prior to the use of this plugin.
Links: <a href="https://coffee2code.com/wp-plugins/post-author-ip/" rel="nofollow ugc">Plugin Homepage</a> | <a href="https://wordpress.org/plugins/post-author-ip/" rel="ugc">Plugin Directory Page</a> | <a href="https://github.com/coffee2code/post-author-ip/" rel="nofollow ugc">GitHub</a> | <a href="https://coffee2code.com" rel="nofollow ugc">Author Homepage</a>
<h3>Hooks</h3>
The plugin is further customizable via four filters. Typically, code making use of filters should ideally be put into a mu-plugin or site-specific plugin (which is beyond the scope of this readme to explain).
c2c_show_post_author_ip_column (filter)
The ‘c2c_show_post_author_ip_column’ filter allows you to determine if the post author IP column should appear in the admin post listing table. Your hooking function can be sent 1 argument:
Argument :
<ul>
<li>$show_column (bool) Should the column be shown? Default true.</li>
</ul>
Example:
<pre><code>/**
 * Don't show the post author IP column except to admins.
 *
 * @param bool $show_column Should the column be shown? Default true.
 * @return bool
 */
function post_author_ip_column_admin_only( $show ) {
 if ( ! current_user_can( 'manage_options' ) ) {
 $show = false;
 }
 return $show;
}
add_filter( 'c2c_show_post_author_ip_column', 'post_author_ip_column_admin_only' );
</code></pre>
c2c_get_post_author_ip (filter)
The ‘c2c_get_post_author_ip’ filter allows you to customize the value stored as the post author IP address. Your hooking function can be sent 2 arguments:
Arguments :
<ul>
<li>$ip (string) The post author IP address.</li>
<li>$post_id (int) The post ID.</li>
</ul>
Example:
<pre><code>/**
 * Store all IP addresses from local subnet IP addresses as the same IP address.
 *
 * @param string $ip The post author IP address.
 * @param int $post_id The post ID.
 * @return string
 */
function customize_post_author_ip( $ip, $post_id ) {
 if ( 0 === strpos( $ip, '192.168.' ) ) {
 $ip = '192.168.1.1';
 }
 return $ip;
}
add_filter( 'c2c_get_post_author_ip', 'customize_post_author_ip', 10, 2 );
</code></pre>
c2c_get_current_user_ip (filter)
The ‘c2c_get_current_user_ip’ filter allows you to customize the current user’s IP address, as used by the plugin. Your hooking function can be sent 1 argument:
Argument :
<ul>
<li>$ip (string) The post author IP address.</li>
</ul>
Example:
<pre><code>/**
 * Overrides localhost IP address.
 *
 * @param string $ip The post author IP address.
 * @param int $post_id The post ID.
 * @return string
 */
function customize_post_author_ip( $ip, $post_id ) {
 if ( 0 === strpos( $ip, '192.168.' ) ) {
 $ip = '192.168.1.1';
 }
 return $ip;
}
add_filter( 'c2c_get_post_author_ip', 'customize_post_author_ip', 10, 2 );
</code></pre>
c2c_post_author_ip_allowed (filter)
The ‘c2c_post_author_ip_allowed’ filter allows you to determine on a per-post basis if the post author IP should be stored. Your hooking function can be sent 3 arguments:
Arguments :
<ul>
<li>$allowed (bool) Can post author IP be saved for post? Default true.</li>
<li>$post_id (int) The post ID.</li>
<li>$ip (string) The post author IP address.</li>
</ul>
Example:
<pre><code>/**
 * Don't bother storing localhost IP addresses.
 *
 * @param bool $allowed Can post author IP be saved for post? Default true.
 * @param int $post_id The post ID.
 * @param string $ip The post author IP address.
 * @return string
 */
function disable_localhost_post_author_ips( $allowed, $post_id, $ip ) {
 if ( $allowed && 0 === strpos( $ip, '192.168.' ) ) {
 $allowed = false;
 }
 return $allowed;
}
add_filter( 'c2c_post_author_ip_allowed', 'disable_localhost_post_author_ips', 10, 3 );
</code></pre>

Post Author IP

Records the IP address of the original post author when a post first gets created.

Proxy &amp; VPN Blocker

<h4>Block VPNs, Proxies, Tor & Spam – Strengthen Your WordPress Security</h4>
Proxy & VPN Blocker is a complete WordPress security plugin designed to protect your site from anonymous and abusive traffic. 
It functions as a powerful VPN blocker, proxy blocker, and Tor blocker, preventing unwanted visitors, spam bots, and fake users from accessing your site.
Using the trusted <a href="https://proxycheck.io" rel="nofollow ugc">proxycheck.io</a> API, it detects connections from VPNs, open proxies, Tor nodes, and compromised servers — giving you real-time protection without slowing down your site.
Perfect for login, registration, comments, or any page you want to secure, Proxy & VPN Blocker also includes smart spam protection, geoblocking, and IP logging to help you stay in control of who can access your WordPress site.
Whether you’re running a blog, store, or membership site, this plugin helps keep out fake users, block risky regions, and stop automated spam attempts before they start.
<h4>Key Features</h4>
<ul>
<li>Powerful WordPress security plugin – blocks VPNs, proxies, Tor, Mysterium nodes, and compromised servers in real time </li>
<li>Country blocking & geoblocking – allow or deny traffic by country or region with flexible IP-based controls </li>
<li>Supports IP ranges, CIDRs, specific IPs, and ASNs for precise network-level blocking </li>
<li>Optionally use proxycheck.io’s Risk Score for smarter VPN and proxy detection decisions </li>
<li>Built-in API Key Statistics with live usage graphs and daily query totals </li>
<li>Visitor Action Log – view blocked IPs, detection reason, and plugin response directly in your dashboard </li>
<li>Caches known good IPs to reduce API usage and improve performance </li>
<li>Works seamlessly with both IPv4 and IPv6 addresses </li>
<li>Compatible with Cloudflare and other CDN headers for accurate IP detection </li>
<li>Block access to Login, Registration, Admin, Comments, or any page/post easily </li>
<li>Customize the “Access Denied” message or redirect visitors to a specific page </li>
<li>Log registration and recent login IPs in the Users list and profile – linked to proxycheck.io’s Threats page </li>
<li>Manage proxycheck.io Whitelist and Blacklist directly from WordPress </li>
<li>Simple integration via WordPress Editor and Toolbar for page-level protection </li>
<li>Lightweight, fast, and built to complement other security plugins </li>
</ul>
And much more available in <a href="https://proxyvpnblocker.com/premium" rel="nofollow ugc">Proxy & VPN Blocker Premium</a>!
<h4>The proxycheck.io API</h4>
This Plugin can be used without a proxycheck.io API key, but it will be limited to 100 daily queries to the API. To enhance the capabilities, you can obtain a free API key from proxycheck.io, which allows for 1,000 free daily queries, making it suitable for small WordPress sites.
Here’s an overview of the free and paid API options:
<ul>
<li>Without an API key (100 queries/day)</li>
<li>With a free API key (1,000 queries/day – ideal for small sites)</li>
<li>With a paid API key (10,000 to over 10 million queries/day)</li>
</ul>
Your API key can be used across all of your sites and apps, you only need a proxycheck.io plan that fits your overall needs.
<h4>User IP Logging Feature</h4>
Proxy & VPN Blocker allows for local logging of user registration IP addresses. The IP addresses are displayed next to each user in the Users list and on their profile pages, visible to administrators. The Plugin also logs the most recent login IP address for each user, which is also displayed in the User’s list and profile page, with the IP address linked to the proxycheck.io Threats page.
<h4>Caching Plugin Notice</h4>
If you’re using caching plugins (like WP Rocket or WP Super Cache), IP-based page blocking might not function correctly due to static caching. A DONOTCACHEPAGE option is available to help mitigate this issue.
<h4>Privacy & GDPR Compliance</h4>
To check IP addresses, the plugin sends them to the proxycheck.io API. No personally identifiable information (PII) beyond the IP is transmitted. For details, refer to proxycheck.io’s <a href="https://proxycheck.io/privacy" rel="nofollow ugc">privacy notice</a> and <a href="https://proxycheck.io/gdpr" rel="nofollow ugc">GDPR Compliance</a> for further information.
<h4>Disclaimer</h4>
This Plugin is not developed by proxycheck.io despite being recommended by them.
<ul>
<li>For plugin-related support, please use the WordPress.org support forum.</li>
<li>For API or account questions, contact proxycheck.io directly.</li>
<li>The proxycheck.io logo is used with express permission.</li>
</ul>

Proxy & VPN Blocker


Have used this plugin for several years and seen it regularly block malicious users. It takes a little effort to setup as per your requirements, but can be very useful if you need to block certain countries, proxies and/or VPNs. 


Proved useful over years

Block VPNs, proxies, Tor, and spam on WordPress. Strengthen security and stop fake users with smart IP blocking via proxycheck.io.

Post Author IP vs Proxy & VPN Blocker