vpnc: Vpnc (Client for cisco vpn concentrator) vpnc: vpnc: A VPN client compatible with Cisco's EasyVPN equipment. vpnc: Supports IPSec (ESP) with Mode Configuration and Xauth. Supports only vpnc: shared-secret IPSec authentication with Xauth, AES (256, 192, 128), 3DES, vpnc: 1DES, MD5, SHA1, DH1/2/5 and IP tunneling. vpnc: It runs entirely in userspace. Only "Universal TUN/TAP device driver vpnc: support" is needed in kernel. vpnc: vpnc: vpnc: