The following blog post describes how to configure TLS client certificate authentication with HA Proxy: https://loadbalancer.org/blog/client-certificate-authentication-with-haproxy/
This question describes how to enable it based on domain name: How to set ssl verify client for specific domain name
Note: I am terminating the TLS connection at HA Proxy. So the information should be accessible to HA Proxy.
Before I started using HA Proxy I could do this easily in Apache, by putting the SSLVerifyClient inside a Location block.
Is this possible with HA Proxy? If so, how can it be done?