Charisse is an experienced cybersecurity analyst whose company must now suddenly provision large numbers of remote access accounts for teleworkers due to the COVID-19 pandemic. Her company is largely unprepared for the numbers of talkers who will require remote access. She has set up three VPN concentrators that use L2TP and IPSec as their protocols, but they will not support the large numbers of users who require VPN access. Which of the following is a temporary solution Charisse can use to enable VPN access for her users, with minimal resources or client configuration?