Sebastian – Thanks for the awesome feedback. I’ll implement your suggestion. How would you recommend I activate the Apache SPI in the docker image? Should I add it to the standalone.xml and comment out the default provider or add it to the deployment URL as annotated in docker documentation: “To add a custom provider extend the Keycloak image and add the provider to the /opt/jboss/keycloak/standalone/deployments/ directory.” Does that count as a custom provider? Freddie From: Sebastian Laskawiec <slaskawi(a)redhat.com&gt; Date: Thursday, August 8, 2019 at 12:18 AM To: "Johnson, Freddie [USA]" <Johnson_Freddie(a)bah.com&gt; Cc: &quot;keycloak-user(a)lists.jboss.org&quot; <keycloak-user(a)lists.jboss.org&gt; Subject: [External] Re: [keycloak-user] Docker X509 Apache Cert Lookup Client Certificate Passthrough The only thing I found a bit weird is that you create `/etc/x509/https` directory. Keycloak image has a small script that tries to grab a key and a certificate in that directory and import them [1]. But I see you're already doing that in `RUN keytool ...` commands. Perhaps you should either put tls.crt and tls.key there and rely on our script or do everything by yourself (but in that case, please remember about modifying configuration similarly to [2]). The last advice I can give to you is to append `-Djavax.net.debug=all` argument to ./standalone.sh. This way you can see, what certificates are being picked up and if the TLS handshake looks correct (although, the debugging is really time-consuming). [1] https://github.com/jboss-dockerfiles/keycloak/blob/master/server/tools/x5... [2] https://github.com/jboss-dockerfiles/keycloak/blob/master/server/tools/x5... On Thu, Aug 8, 2019 at 1:05 AM Johnson, Freddie [USA] <Johnson_Freddie@bah.com<mailto:Johnson_Freddie@bah.com>> wrote: Team -- I'm currently having issues getting Keycloak to read the client certificate forwarded from proxy in HTTP header from Apache using Apache SPI Cert lookup. Instead, it reads the wildcard of the cert provided below in the virtual host of *.xxx.ninja from SSLProxyMachineCertificateFile. However, if i use that common name of the wildcard and assign it to any user, Keycloak will log that user in even though that is not the user originally making the initial request to the proxy. In short, how do I force Keycloak running in a container to use the apache spi to retrieve cert credentials in header? I tried developer documentation by adding spi per https://www.keycloak.org/docs/latest/server_admin/index.html#client-certi... to both standalone.xml and deployment folder but it's as if Keycloak is not recognizing the configuration change in container after build. If I remove SSLProxyMachineCertificateFile from Apache, Keycloak sends a message to the proxy saying "downstream ser! ver expected client cert but none configured" so that option didn't work either. Details below: My apache reverse proxy is: <VirtualHost *:443> SSLEngine on SSLProxyEngine on SSLVerifyClient optional SSLVerifyDepth 4 SSLOptions +ExportCertData SSLProxyCheckPeerName off ProxyPreserveHost On SSLProxyCACertificateFile "/usr/local/apache2/conf/ca-xxx-ninja.crt" SSLCACertificateFile "/usr/local/apache2/conf/xxx_authorities.pem" SSLProxyMachineCertificateFile "/usr/local/apache2/conf/proxy-wildcard-xxx-ninja.pem" RequestHeader set SSL_CLIENT_CERT "" RequestHeader set SSL_CLIENT_CERT_CHAIN_4 "" ServerName sso.xxx.ninja ProxyPass / https://keycloak:8443/<https://urldefense.proofpoint.com/v2/url?u=http... ProxyPassReverse / https://keycloak:8443/<https://urldefense.proofpoint.com/v2/url?u=http... ProxyRequests Off RequestHeader set X-Forwarded-Port "443" RequestHeader set X-Forwarded-Proto "https" RequestHeader set SSL_CLIENT_CERT "%{SSL_CLIENT_CERT}i" RequestHeader set CERT_CHAIN "%{SSL_CLIENT_CERT_CHAIN_4}i" </VirtualHost> My Keycloak Dockerfile (abbreviated - sanitized): ENV "X509_CA_BUNDLE"="/opt/xxx/xxx_authorities.pem" USER root RUN mkdir -p /etc/x509/https RUN mkdir -p /opt/xxx COPY "./certs/tls.crt" "/etc/x509/https" COPY "./certs/tls.key" "/etc/x509/https" COPY "./standalone.xml" "/opt/jboss/keycloak/standalone/configuration/standalone.xml" <---- originally edited this file to hold apache spi COPY "./apache.xml" "/opt/jboss/keycloak/standalone/deployments/apache.xml" < ------- moved apache spi for x509 here per online instructions COPY "./certs/ca-xxx-ninja.crt" "/opt" COPY "./certs/xxx/xxx_authorities.pem" "/opt/xxx/" RUN keytool -noprompt -import -trustcacerts -alias root -file /opt/ca-xxx-ninja.crt -keystore $JAVA_HOME/jre/lib/security/cacerts -storepass changeit RUN keytool -noprompt -import -trustcacerts -alias xxx -file /opt/xxx/xxx_authorities.pem -keystore $JAVA_HOME/jre/lib/security/cacerts -storepass changeit USER 1000 EXPOSE 8080 8443 Any guidance/ideas you can provide would much appreciated as I've been working it for a few days now and can't seem to get over this last hurdle. Respectfully, Freddie Lee Johnson, Jr. _______________________________________________ keycloak-user mailing list keycloak-user@lists.jboss.org<mailto:keycloak-user@lists.jboss.org> https://lists.jboss.org/mailman/listinfo/keycloak-user<https://urldefe...