OpenConnect SSL VPN
Free open-source SSL VPN client supporting multiple protocols including AnyConnect
Understanding OpenConnect VPN
OpenConnect serves as a versatile SSL VPN client supporting various protocols including Cisco AnyConnect. It’s designed to establish secure encrypted connections across different networks while maintaining high performance.
The client stands out for its compatibility with Cisco AnyConnect VPN servers while remaining completely open-source. Its modular design allows for extensive customization and integration with various authentication methods.
Key Features & Benefits
Protocol Compatibility
Supports Cisco AnyConnect SSL VPN, Juniper/Netscreen SSL VPN, openconnect client and Pulse Connect Secure
Multi-OS Support
Available for Windows, Linux, macOS, Android, and other platforms
Enterprise-Grade Protection
Provides military-grade encryption with support for openconnect two-factor authentication
Community-Driven Development
Benefits from continuous community improvements and security audits
Download OpenConnect
Available for all major platforms – completely free and open-source
Windows
Windows 10/11 (64-bit)
Linux Systems
Red Hat/CentOS RPM packages
Apple macOS
Supports Intel and Apple Silicon
Installation Guide for Windows
Download the Installer
Obtain the Windows-compatible version from the project’s official download page. The installer is typically available as a standard .exe file for easy installation.
Execute Setup Process
Run the installation file and grant necessary permissions when prompted by UAC. Follow the setup wizard instructions, accepting the license agreement and choosing installation location.
Setup Server Details
Configure the client by entering your organization’s VPN server address and credentials. Set up authentication credentials, certificates, or token-based login as per your network requirements.
Connect to VPN
Select your configured connection profile and click connect to establish the VPN tunnel. Monitor connection status through the system tray icon and verify successful network access.
Problem Resolution Guide
Connection Failures
Verify server address accuracy and network connectivity before attempting connection. Confirm certificate validity and authentication credentials with your network administrator.
Certificate Errors
Ensure system clock is synchronized and certificates haven’t expired. Verify certificate chain completeness and proper installation in certificate store.
Important: For organization-specific configurations, consult your IT department for exact connection parameters. Corporate environments may have unique authentication requirements or security policies.