IGEL OS 11.04 IGEL OS Articles Current: Security PDF Download PDF Download page Security. Current page Include child pages All pages Security Securing IGEL OS Endpoints Secure Shell (SSH) Access to IGEL OS with Keys Secure Terminal (Telnet with TLS/SSL) Secure Shadowing (VNC with TLS/SSL) Cherry eGK Channel Substitution Single Sign-on for the Browser Proxy Limiting the Number of Permitted Login Attempts ×