I am getting the following error and my app stops working:
    2020/07/12 14:32:03 [error] 45625#45625: *10918 upstream sent too big header while reading response header from upstream, client: 139.xxx.yyy.zzz, server: www.nixcraft.com, request: “POST /app/mg/posts HTTP/2.0”, upstream: “fastcgi://unix:/run/php/php-fpm.sock:”, host: “www.nixcraft.com”, referrer: “https://www.nixcraft.com/mg/admin/index.app”
How do I fix this error for Nginx web server running on Linux or Unix-like systems?
[continue reading…]

My Nginx web server is behind a reverse proxy server. How do I restore the original and real IP address of my client/visitors when behind a reverse proxy server such as AWS Cloudfront, Fastly, Cloudflare CDN/WAF?
[continue reading…]

I configured Nginx server. However, it is sending the wrong content type. I need to force Nginx to send specific “Content-Type: text/xml; charset=UTF-8“. How do I configure Nginx to override content type for given URL location?
[continue reading…]

I want ALL cyberciti.biz to go to www.cyberciti.biz for SEO and other reasons. I want ALL HTTP traffic to go to HTTPS. How do I redirect all HTTP/HTTPS non-www (e.g. domain name cyberciti.biz) traffic to www (e.g. domain name www.cyberciti.biz) when using Nginx web server?
[continue reading…]

I operate a small web site on Cloud server powered by CentOS Linux v6.4. I would like to encrypt my site’s information and create a more secure connection. How do I create a self-signed SSL certificate on Nginx for CentOS/Fedora or Red Hat Enterprise Linux based server?
[continue reading…]

I am the small business owner and runs my own web-site. I have noticed increased cracking activity against by blog. What’s the best way to block WordPress URLs such as example.com/blog/wp-login.php and example.com/blog/wp-admin/ in the nginx web-server?

Tutorial details
Difficulty level	Advanced
Root privileges	Yes
Requirements	Linux+Nginx
Est. reading time	N/A

[continue reading…]