OpenConnect SSL VPN
Free open-source SSL VPN client supporting multiple protocols including AnyConnect
What is OpenConnect?
OpenConnect is a free open-source SSL VPN client that provides secure remote access to private networks. 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
Multi-Protocol Support
Compatible with multiple enterprise VPN protocols including AnyConnect and Pulse Secure
Multi-OS Support
Runs seamlessly across all major operating systems and architectures
Advanced Security
Provides military-grade encryption with support for two-factor authentication
Open Source Advantage
Completely free and open-source with transparent code development
Download OpenConnect
Free download for Windows, Linux, macOS and other operating systems
Windows OS
Windows 10/11 (64-bit)
Linux
Ubuntu/Debian .deb packages
macOS
macOS 10.15 and later
Installation Guide for Windows
Download the Installer
Obtain the Windows-compatible version from the project’s official download page. Look for the MSI or executable installer package for straightforward setup.
Run Installation
Launch the downloaded installer with administrator privileges for proper system access. Follow the setup wizard instructions, accepting the license agreement and choosing installation location.
Setup Server Details
Launch OpenConnect GUI and add a new connection profile with your VPN server details. 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.
Troubleshooting Common Issues
Connectivity Problems
Check firewall settings and ensure required ports are open for VPN traffic. Confirm certificate validity and authentication credentials with your network administrator.
Certificate Errors
Import required root certificates and intermediate certificate authorities. Verify certificate chain completeness and proper installation in certificate store.
Important: Enterprise users should contact their network administrators for customized setup instructions. Some networks require additional security software or specific configuration tweaks.