Install VPN Helper and follow the instructions on configuring VPN-connection.

Attention! To connect to ExtVPN use the EXTVPN Helper application.

To connect to EXTVPN from macOS refer to the instruction:  RU | EN 

Other OS:

Certificates (All Platforms)

Instruction on connecting to CiscoVPN for Mac

Instruction on connecting to CiscoVPN for Linux

Certificates (tar.gz format)