🤖 Overview

squidclamav_redirector is a legitimate helper program for the Squid proxy server, developed by the squidclamav project maintained on SourceForge and GitHub. Its purpose is to intercept HTTP responses and redirect them to ClamAV for real-time virus and malware scanning, thereby blocking malicious content from reaching end users. It is not a crawler or search engine bot but an automated security agent that enhances web proxy defenses.

🌐 Technical Behavior

squidclamav_redirector operates as a Squid url_rewrite_program or redirect_program, processing every HTTP request that passes through the Squid proxy. For each request, it submits the URL to the ClamAV daemon (clamd) via the clamav-client library, using UNIX sockets or TCP connections. If ClamAV detects a threat, the redirector returns a temporary redirect (302) to a configurable warning page (often called message.cgi) that informs the user of the blocked content. The scan frequency is directly tied to proxy traffic; there is no independent crawl rate. IP ranges are not fixed as Squid typically runs on a single server, and the redirector does not originate outbound traffic—it only coordinates with local clamd.

📋 robots.txt Compliance

robots.txt is not applicable to squidclamav_redirector because it does not crawl or index web content. It reacts to user-initiated HTTP requests forwarded by Squid, and does not have its own crawling directives. The redirector does not evaluate or honor robots.txt files; that is the responsibility of the original requesting client or the proxy configuration.

🔍 Detection Indicators

The redirector itself does not have a unique User-Agent string—it passes through the original client’s User-Agent. However, administrators may detect its activity through Squid access logs containing entries referencing the message.cgi or blocked.cgi URL patterns, or through ClamAV logs showing scan requests from the redirector. The redirector may set custom HTTP headers such as X-Virus-Status: Clean or X-Virus-Status: Infected if configured, which are not exposed to downstream servers.

📊 Data Usage

squidclamav_redirector does not collect, store, or transmit data for AI training or analytics. Its sole purpose is to scan HTTP responses for malware signatures and block them in real time. No user data is logged by the redirector itself; only Squid and ClamAV may record metadata for security auditing according to administrator policies. The project’s documentation (SourceForge, GitHub) emphasizes that it is strictly a security tool with no data harvesting capability.

⚙️ Rate Limiting Policy

Rate limiting for squidclamav_redirector is not defined by the tool itself, but proxy administrators may apply throttling to prevent clamd overload during traffic spikes. Since the redirector is a legitimate security component, blocking it would break the proxy’s antivirus defenses; instead, rate limiting is applied per client IP at the proxy level to ensure fair resource usage and avoid denial-of-service conditions on the scanning daemon.

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the bots listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.