Add security warning about publicly exposed PHP-FPM - #5263
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fastcgi_abort_request() does not exist: the FPM SAPI only declares fastcgi_finish_request(). The <simpara> conversion the style check requires is kept. The chapter warning now states the mechanism instead of asserting the risk, and moves after the feature list so it no longer splits the sentence introducing it. The listen warning carries the operational detail, names listen.owner and the BSD caveat, and no longer repeats the chapter.
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Summary
<warning>block to the FPM main page (install/fpm/index.xml) about therisk of exposing PHP-FPM to untrusted networks (arbitrary code execution)
listen.allowed_clients, and Docker/container bestpractices
listendirective ininstall/fpm/configuration.xmlFixes #3984