You use a service to send different types of data (such as email, files, or commands) from one computer to another across a network or to a different network. These services use protocols. Frequently used Internet services are:
When you allow or deny a service, you must add a policy to your XTM device configuration. Each policy you add can also add a security risk. To send and receive data, you must open a door in your computer, which puts your network at risk. We recommend that you add only the policies that are necessary for your business.
As an example of how you can use a policy, suppose the network administrator of a company wants to activate a Windows terminal services connection to the company’s public web server on the optional interface of the XTM device. He or she routinely administers the web server with a Remote Desktop connection. At the same time, he or she wants to make sure that no other network users can use the Remote Desktop Protocol terminal services through the XTM device. The network administrator would add a policy that allows RDP connections only from the IP address of his or her own desktop computer to the IP address of the public web server.
When you configure your XTM device with the Quick Setup Wizard, the wizard adds only limited outgoing connectivity. If you have more software applications and network traffic for your XTM device to examine, you must:
Add Policies to Your Configuration