Canonicalize Host – Add/Remove www (Apache) Canonicalize host names by either prepending www or explicitly omitting it from the domain name.

Deny Request Based On Method (Apache) Block requests when made with specific request methods.

Dynamic robots.txt (Apache) Rewrite requests for robots.txt to a dynamic file which generates robot directives.

Serve Images from New Directory (Apache) Serve images from a new directory, whether by rewrite or redirect.

Whitelist/Blacklist IP Addresses (IIS) Only allows requests from a specified set of IPs. Useful when a site is under development or maintenance.

Reverse Proxy To Another Server (Apache) Proxy an intranet, or other, server's content through a different webserver.

Redirect All HTTP Requests To HTTPS (Apache) Redirect all non-secure (HTTP) requests to use a secure (HTTPS) connection.

Reverse Proxy To Another Server (IIS) Proxy an intranet, or other, server's content through a different webserver.

Reverse Proxy To Another Server (NGINX) Proxy an intranet, or other, server's content through a different webserver.

Redirect Default Document to Directory (NGINX) Redirect all requests to a default document to the parent directory URL. Important SEO tactic to avoid duplicate content penalties.