Rate Limiting in iptables

iptables -A INPUT -p tcp –syn –dport 80 -m connlimit –connlimit-above 15 –connlimit-mask 32 -j REJECT –reject-with tcp-reset

Allowing Apache to see client ip from Behind a trusted proxy.

With high speed caching based on nginx, varnish or CDNs in general the client ip gets lost. All IPs get reported as since the proxy is making the socket request. Solution is two phased: 1) enable reporting the client IP to theĀ X-Forwarded-For header at the proxy or CDN. This depends on the proxy will…

How to test varnish vcl file

Unlike most other configuration systems varnish went with a compiled configuration so if there is a mistake all you get is :   Starting varnish HTTP accelerator: [FAILED] To check what the problem is use the following : varnishd -C -f default.vcl varnishd -C -f default.vcl Message from VCC-compiler: Expected return action name. (input Line…

How To Install WordPress on Centos 6

About WordPress WordPress is a free and open source website and blogging tool that uses php and MySQL. It was created in 2003 and has since then expanded to manage 22% of all the new websites created and has over 20,000 plugins to customize its functionality.