SQL Express trough network

A much better way. This shows you how to allow the SQL Server Executable instead of the ports. This method works with dynamic ports turned on.

http://greenwireit.com/blog/2013/05/15/microsoft-sql-server-express-windows-firewall-dynamically/

I should have explained more I was kind of tired. Dynamic ports is available but its not turned on by default… by default it uses port 1433 or 1434.

TCP protocol didnt seem to work, all protocols did…
It says about adding sql browser, is that needed or just server?