TYPO3 Core

Scenario: * Proxy Server HTTPS (SSL termination) => Port 443 * Application Server HTTP => Port 80 * Default trustedHostsPattern configuration (GeneralUtility::ENV_TRUSTED_HOSTS_PATTERN_SERVER_NAME)

https://mydomain.com (e.g. via nginx server) -> proxied to apache backend -> http://10.0.0.1/

Proxy configuration like:

location / {
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_pass http://10.0.0.1;
}

Because of the HOST_NAME verification that consideres the proxy port is equal to the local webserver port, such configurations currently need to configure a slow custom trustedHostsPattern, although 'mydomain.com' is the correct SERVER_NAME.