Set up WAMP server - getting 403

I want to put my website online. I am using WampServer 2.2. Now, I've set up wamp as follows:

<Directory />
  AllowOverride All
  Options All
  Require all granted
  Order allow,deny
</Directory>

Listen 81
<VirtualHost *:81>
  ServerName rti.etf.rs
  DocumentRoot "C:/wamp/www"
  DirectoryIndex index.php
</VirtualHost>

I've opened up port 81 in Windows Firewall. Now, when I try opening localhost:81 my webpage opens well. However, when I try accessing it with my external IP address 176.xxx.xxx.xxx:81, I get a 403 Forbidden error. I see these requests in the Apache access log, so I guess that part is set up well, but I must be missing something it the Apache configuration.

Edit: Put Online option is activated.

Any helpful ideas?

Solution

OK try this, you didn't specify which version of Apache you were using and you seem to have Apache 2.2 syntax mixed up with Apache 2.4 syntax so I have given both versions.

Change this section back to how it was originally, this controls access to your C:\ and you just allowed full access to it, NOT GOOD.

From

<Directory />
  AllowOverride All
  Options All
  Require all granted
  Order allow,deny
</Directory>

to Apache 2.2.x syntax

<Directory />
    Options FollowSymLinks
    AllowOverride None
    Order Deny,Allow
    Deny from all
</Directory>

Apache2.4.x syntax

<Directory />
    Options FollowSymLinks
    AllowOverride None
    Require all denied
</Directory>

Now to your Virtual Hosts. This also need to have it's own security specified inside the block

Listen 81
<VirtualHost *:81>
  ServerName rti.etf.rs
  DocumentRoot "C:/wamp/www"
  DirectoryIndex index.php
#### Apache 2.2 syntax
  <Directory "C:/wamp/www/">
     AllowOverride All
     Order Allow,Deny
     Allow from all
  </Directory>
#### Apache 2.4 syntax
  <Directory "C:/wamp/www/">
     AllowOverride All
     Require all granted
  </Directory>
</VirtualHost>

PS. I cannot see any benefit in using port 81 and it just makes life more complicated for an external user.