Detect mod_ssl
mod_ssl is an optional module for the Apache HTTP Server. It provides strong cryptography for the Apache web server via the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) cryptographic protocols by the help of the open-source SSL/TLS toolkit OpenSSL.
Detection looks at response headers across 1 fingerprint rules among the site's public responses.
Websites using mod_ssl
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Signal classes
PluginView evaluates public page signals in these classes when identifying mod_ssl. Individual fingerprint rule bodies are proprietary and are not published.
- Response headers
Example public indicators for mod_ssl
Illustrative indicators derived from public catalog metadata for mod_ssl. A live scan may match additional proprietary rules beyond these examples.
- server: mod_ssl/?
What a detection means
- Establishes
- One or more public signals on the scanned page matched a known mod_ssl signature (1 rules) at the time of the scan.
- Does not establish
- A sitewide install of mod_ssl, an active vendor contract, exclusive use, or that mod_ssl is still in place today.
How to check a site for mod_ssl
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest mod_ssl signals.
- 2. PluginView reads only public responses (response headers) and scores them against the mod_ssl signature set (1 rules).
- 3. Review the confidence score and text explanation for mod_ssl on the results page.
Commonly implies
A confirmed mod_ssl match also implies these technologies are present.
FAQ: detecting mod_ssl
- Can PluginView detect mod_ssl without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for mod_ssl — typically response headers. It does not bypass authentication or paywalls.
- What category is mod_ssl?
- mod_ssl is classified under Web server extensions in the PluginView directory.
- How many fingerprint rules cover mod_ssl?
- This reference currently tracks 1 fingerprint rule across response headers. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses mod_ssl?
- Illustrative public indicators for mod_ssl include server: mod_ssl/?. A live scan may match additional proprietary rules beyond these examples.
