vpnc

Cisco-compatible VPN client

Platforms: Linux · Last verified September 6, 2026

vpnc is a VPN client compatible with cisco3000 VPN Concentrator (also known as Cisco’s EasyVPN equipment). vpnc runs entirely in userspace and does not require kernel modules except for the tun driver to communicate with the network layer.

Only use this tool against systems you own or are explicitly authorized to test — see the disclaimer.

Getting started

See the official Kali tool page and upstream homepage linked above for installation and usage details.

Commonly preinstalled on

Kali Linux

Debian-based distribution built for penetration testing and security auditing