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ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

Your organization must let short-term contractors reach an internal web application remotely. They connect from hotel or guest Wi-Fi that permits only outbound TCP port 443. Policy requires mutual X.509 certificate authentication, and administrators want to avoid contractors installing extra network adapters or changing local firewalls. Which VPN approach best meets these constraints while following security best practices?

  • Implement an L2TP over IPsec remote-access VPN that installs a virtual network adapter and uses UDP ports 500, 1701, and 4500.

  • Configure an IPsec VPN in tunnel mode with IKEv2 and pre-shared keys, requiring UDP ports 500 and 4500 to be open.

  • Enable PPTP with MS-CHAPv2 authentication on the perimeter firewall so contractors can connect using native OS support.

  • Deploy a clientless SSL/TLS VPN that terminates on the DMZ gateway and uses X.509 client certificates for authentication.

ISC2 Systems Security Certified Practitioner (SSCP)
Cryptography
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