I have first tested the LDAP configuration using the LDAP plugin and it worked without issues.

I have then changed the security realm to use "HTTP Header by reverse proxy" and have setup the Advanced section for LDAP using the same configuration.

I setup Project-based Matrix Authorization Strategy.

I am able to login using the Proxy, but if I go directly to the website and login I cannot.

I am wondering if this is an issue or expected behavior or anyway to use both "HTTP Header by reverse proxy" and "LDAP"

Even though I have validated the inputs and values for [Server | Manager DN | Manager Password ] - I'm seeing the following errors by inputs:

HTTP ERROR 404

Problem accessing /securityRealms/LDAPSecurityRealm/serverCheck. Reason:
Problem accessing /configureSecurity/'/securityRealms/LDAPSecurityRealm/serverCheck.
Reason:
Not Found

Then when I try to login via the website I get this error:
Problem accessing /j_acegi_security_check. Reason:
Not Found