Please see attached network diagram for reference.
We need to setup 2nd NIC card that can access our office network. Trade Point and Web Site both need to access our database on SERVER4. If I setup to access database through internet that will create extra traffic on our both internet connections. In network diagram see RED connection that I want to setup. And we need isolation between that two network connections on the web server (i.e. Network connection 1 must not access anything on network connection 2).
How can I setup 2nd NIC that will only access particular port to particular server?
Do I need to buy any extra hardware/software to do this?
Thanks in advance.
Please feel free to ask if you need more information.