Nginx – Add SameSite to Cookies Using Nginx as Reverse Proxy

cookiesnginxreverse-proxyrewrite

With Nginx as reverse proxy, how do you add samesite=strict or samesite=lax to cookies?

Best Answer

With this code you can define all your application cookies as secure, httponly and/or samesite using proxy_cookie_path (http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_cookie_path)

location / {
        # your usual config ...
        # hack, set all cookies to secure, httponly and samesite (strict or lax)
        proxy_cookie_path / "/; secure; HttpOnly; SameSite=strict";
    }

Related Solutions

Nginx – How to Set Up as a Caching Reverse Proxy

I don't think that there is a way to explicitly invalidate cached items, but here is an example of how to do the rest. Update: As mentioned by Piotr in another answer, there is a cache purge module that you can use. You can also force a refresh of a cached item using nginx's proxy_cache_bypass - see Cherian's answer for more information.

In this configuration, items that aren't cached will be retrieved from example.net and stored. The cached versions will be served up to future clients until they are no longer valid (60 minutes).

Your Cache-Control and Expires HTTP headers will be honored, so if you want to explicitly set an expiration date, you can do that by setting the correct headers in whatever you are proxying to.

There are lots of parameters that you can tune - see the nginx Proxy module documentation for more information about all of this including details on the meaning of the different settings/parameters: http://nginx.org/r/proxy_cache_path

http {
  proxy_cache_path  /var/www/cache levels=1:2 keys_zone=my-cache:8m max_size=1000m inactive=600m;
  proxy_temp_path /var/www/cache/tmp; 


  server {
    location / {
      proxy_pass http://example.net;
      proxy_cache my-cache;
      proxy_cache_valid  200 302  60m;
      proxy_cache_valid  404      1m;
    }
  }
}

Nginx Reverse Proxy – How to Rewrite Domain Part of Set-Cookie

Starting in 1.1.15, proxy_cookie_domain option was added to address this issue.

http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_cookie_domain

Best Answer

Related Solutions

Nginx – How to Set Up as a Caching Reverse Proxy

Nginx Reverse Proxy – How to Rewrite Domain Part of Set-Cookie

Related Topic