GC HTTPS Appliances

Load Balancing and Reverse Proxies

Load balancers and reverse proxy servers are often implemented with TLS offloading or termination capabilities, and should be included in scope of HTTPS activities. All endpoints should be adequately configured to meet ITPIN requirements.

For device specific configuration guidelines, refer to your device manual.

F5 Specific Support

https://support.f5.com/csp/article/K8802

Enforce TLS 1.2 HTTPS communications with F5 BIG-IP SSL profiles
You could just enter 'TLSv1_2' in the Ciphers field of the client SSL profile to limit all client side communications to protocols that use TLSv1.2. Refer to the following for the detailed step-by-step instructions:

https://support.f5.com/csp/article/K17370 (scroll down to section “Configuring the SSL profile to use a specific protocol“)

https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-system-ssl-administration-12-1-1/4.html (scroll down to section “Assigning SSL profiles to a virtual server”)