OpenConnect VPN Client
Free open-source SSL VPN client supporting multiple protocols including AnyConnect
What is OpenConnect?
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.
Core Functionality & Advantages
Protocol Compatibility
Compatible with multiple enterprise VPN protocols including AnyConnect and Pulse Secure
Multi-OS Support
Available for Windows, Linux, macOS, Android, and other platforms
Enterprise-Grade Protection
Implements strong encryption standards and certificate-based authentication
Open Source Advantage
Completely free and open-source with transparent code development
Download OpenConnect
Available for all major platforms – completely free and open-source
Windows
CoDownload for Windows openconnectopenconnect
Linux Systems
Ubuntu/Debian .deb packages
macOS
Supports Intel and Apple Silicon
Windows Setup Instructions
Get Windows Package
Obtain the Windows-compatible version from the project’s official download page. Look for the MSI or executable installer package for straightforward setup.
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 openconnect for windows 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. Confirm successful connection through status indicators and test network accessibility.
Problem Resolution Guide
Connection Failures
Check firewall settings and ensure required ports are open for VPN traffic. Confirm certificate validity and authentication credentials with your network administrator.
Certificate Errors
Ensure system clock is synchronized and openconnect download certificates haven’t expired. Check for self-signed certificates that may require manual acceptance.
Important: Enterprise users should contact their network administrators for customized setup instructions. Some networks require additional security software or specific configuration tweaks.