What is caddy's equivalent of ngx_http_referer_module?

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1

Is there an equivalent of ngx_http_referer_module?

The ngx_http_referer_module module is used to block access to a site for requests with invalid values in the “Referer” header field.

http://nginx.org/en/docs/http/ngx_http_referer_module.html

Or any way of doing a similar protection in caddy without a module?

2

Reading the documentation you linked, it looks like the module:

  1. Reads the Referer header of an incoming request
  2. Blocks requests with unwanted values

We can do #1 with Matchers and #2 with respond.

Specifically, you’re looking for the header matcher and you probably want to send perhaps a status 403.

See:
https://caddyserver.com/docs/caddyfile/matchers#header
https://caddyserver.com/docs/caddyfile/directives/respond

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