Detect mod_jk
Mod_jk is an Apache module used to connect the Tomcat servlet container with web servers such as Apache, iPlanet, Sun ONE (formerly Netscape) and even IIS using the Apache JServ Protocol. A web server waits for client HTTP requests.
Detection looks at response headers across 1 fingerprint rules among the site's public responses.
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Websites using mod_jk
Loading website list…
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Signal classes
PluginView evaluates public page signals in these classes when identifying mod_jk. Individual fingerprint rule bodies are proprietary and are not published.
- Response headers
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Example public indicators for mod_jk
Illustrative indicators derived from public catalog metadata for mod_jk. A live scan may match additional proprietary rules beyond these examples.
- server: mod_jk/?
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What a detection means
- Establishes
- One or more public signals on the scanned page matched a known mod_jk signature (1 rules) at the time of the scan.
- Does not establish
- A sitewide install of mod_jk, an active vendor contract, exclusive use, or that mod_jk is still in place today.
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How to check a site for mod_jk
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest mod_jk signals.
- 2. PluginView reads only public responses (response headers) and scores them against the mod_jk signature set (1 rules).
- 3. Review the confidence score and text explanation for mod_jk on the results page.
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Commonly implies
A confirmed mod_jk match also implies these technologies are present.
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FAQ: detecting mod_jk
- Can PluginView detect mod_jk without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for mod_jk — typically response headers. It does not bypass authentication or paywalls.
- What category is mod_jk?
- mod_jk is classified under Web server extensions in the PluginView directory.
- How many fingerprint rules cover mod_jk?
- 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_jk?
- Illustrative public indicators for mod_jk include server: mod_jk/?. A live scan may match additional proprietary rules beyond these examples.
