IGEL OS 11.01 IGEL OS Articles Current: Security PDF Download PDF Download page Security. Current page Include child pages All pages Security Securing IGEL OS EndpointsSecure Shell (SSH) Access to IGEL OS with KeysSecure Terminal (Telnet with TLS/SSL)Secure Shadowing (VNC with TLS/SSL)Cherry eGK Channel SubstitutionSingle Sign-on for the Browser ProxyLimiting the Number of Permitted Login Attempts