HTTPS undertow listener request client certificate despite verify-client=NOT_REQUESTED -------------------------------------------------------------------------------------- Key: WFLY-5256 URL: https://issues.jboss.org/browse/WFLY-5256 Project: WildFly Issue Type: Bug Components: Web (Undertow) Affects Versions: 8.2.0.Final Reporter: Manuel Colchete Assignee: Stuart Douglas HTTPS undertow listener has 3 options for verify-client parameter: NOT_REQUESTED (Default), REQUESTED, REQUIRED. If it is set to NOT_REQUESTED (the default), it should not require a certificate chain unless the client requests a resource protected by a security constraint that uses CLIENT-CERT authentication. But when I tried to access secured resource as first, it don't requested certificate and return HTTP status 403.