htaccess rules not working on my index.php file - php

Question

I added this rule to my (htaccess) file on my root web server so that should anyone try to access lets say /web server/test then index would take the 'test' input as string but it is not working it keeps on saying error 404 not found.
My code is below:
<IfModule mod_deflate.c>
SetOutputFilter DEFLATE
</IfModule>
php_flag magic_quotes_gpc off
RewriteEngine on
RewriteRule ^([^./]{3}[^.]*)$ /index.php?page=$1 [QSA,L]
Are there any faults in this?
Below is my apache2 conf file.... As I get error 500 after changing my settings to override all.
Now I am getting error 500 ... so that I can provide more information... below is my htaccess file code
<IfModule mod_deflate.c>
SetOutputFilter DEFLATE
</IfModule>
php_flag magic_quotes_gpc off
RewriteEngine On
RewriteRule ^([^./]{3}[^.]*)$ /index.php?page=$1 [QSA,L]
And my apache2.conf file.....
<Directory />
Options FollowSymLinks
AllowOverride All
#Require all denied
Order allow,deny
Allow from all
</Directory>
<Directory /usr/share>
AllowOverride All
Order allow,deny
Allow from all
Require all granted
</Directory>
<Directory /var/www/>
Options Indexes FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all
Require all granted
</Directory>

Answer 1

two key points you need attention .
ensure your root directory can be overwrite by apache , please check the apache configuration , correct setting by below:
<Directory />
Options FollowSymLinks Multiviews
#AllowOverride none
AllowOverride All
Order allow,deny
Allow from all
# Require all denied
</Directory>
check your rewrite rules and ensure them can work. On your case i test following rules and work fun on my local.
RewriteEngine On
RewriteRule ^(\w+)$ /index.php?page=$1 [L]
Hope this can help you!