To connect to Oracle’s EM console recently, use the Firefox browser.
It always fails to connect:
https://124.13.23.23:1158/em
 
Error: Unable to secure connection because SSL protocol is disabled. (SSL_error_sSL_disabled)
 
Check on the AIX system that the EM service has been started:
 
Hgsdfe01 :[/oracle]$emctl status dbconsole
oracle Enterprise Manager 11g Database Control Release 11.2.0.1.0
Copyright (c) 1996, 2009 Oracle Corporation. All rights reserved.

https://hgdss01:1158/em/console/aboutApplication Oracle Enterprise Manager 11 g is running.
——————————————————————
Logs are generated in directory /oracle/app/oracle/product/11g/db/hgdsfe01_sfedev/sysman/log
 
Em has been started.
 
Solutions:
1: Download the latest Firefox browser: 3.6.12
2: Tools — options — Advanced — encryption
3: Check: Use TLS1.0
4: Click OK
5: Turn off Firefox from now on.