https://community.cloudera.com/t5/Support-Questions/KNOX-Pac4j-connection-via-CURL/m-p/213332#M175260 <P>ah, I see, I have had issues with using localhost, to get around this in my etc/host file I add an entry for <A href="https://community.cloudera.com/www.local.com" target="_blank">www.local.com</A> -&gt; 127.0.0.1 </P><P>and in your topology add it to the whitelist </P><P>&lt;param&gt;<BR /> &lt;name&gt;knoxsso.redirect.whitelist.regex&lt;/name&gt;<BR /> &lt;value&gt;^https?:\/\/(www\.local\.com|localhost|127\.0\.0\.1|0:0:0:0:0:0:0:1|::1):[0-9].*$&lt;/value&gt;<BR /> &lt;/param&gt;</P><P>Then try to access it using <A href="https://www.local.com:8443/" target="_blank">https://www.local.com:8443/</A>.</P><P>This should help, let me know if this does not help.</P><P>Best,</P><P>Sandeep</P> Tue, 13 Feb 2018 03:07:20 GMT smore 2018-02-13T03:07:20Z