Wordpress offers you the ability to create a custom URL structure for your website. Before you can used it, mod_rewrite on your HTTP Server must be enabling by load mod_rewrite in Apache configuration file (httpd.conf). Next, in your website root directory, create .htaccess file with content :
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /gwawan.com/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} [...]
