Version 5.7.4

- Improved logging for LDAP timeouts. - The Authentication Proxy Manager and connectivity tool now warn against use of 'clear' transport in ad_client with certificates specified. - Removes the misleading no reply message in packet RADIUS error message to reduce confusion while troubleshooting authentication failures. - No longer duplicates the proxy-state RADIUS attribute when both the RADIUS client and server configuration sections specify pass_through_all=true. - The connectivity tool no longer exits prematurely when it fails to connect to a RADIUS server that is not running. - Fixed an issue that could result in multiple redundant connections to the Duo SSO service in certain race conditions.