1. download array_vpnc-8.4.0.0.bin from https://louisville.edu/it/private/accounts/vpn/array_vpnc-8.4.0.0.bin
2. the detail settings see: https://louisville.edu/it/private/accounts/vpn/linux-installation.html
上面的bin文件会生成出对应四个OS平台下的client文件：
array_vpnc_fedora
array_vpnc_rh
array_vpnc_suse
array_vpnc_ubuntu
找到自己对应系统的文件并cp array_vpnc_* /usr/local/bin, 基本上就差不多了
3. array_vpnc hostname username password(static_password+dynamic_password)
4. if you see "array_vpnc: VPN TUNNEL SUCCESSFUL! " congratulations!
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