Adding network services
|Article:HOWTO27073|||||Created: 2010-01-08|||||Updated: 2010-01-15|||||Article URL http://www.symantec.com/docs/HOWTO27073|
Network services let networked computers send and receive messages, share files, and print. A network service uses one or more protocols or ports to pass through a specific type of traffic. For example, the HTTP service uses ports 80 and 443 in the TCP protocol. You can create a firewall rule that allows or blocks network services.
The network service list eliminates the necessity to retype a protocol and port for each rule that you create. You can select a network service from a default list of commonly used network services. You can then add the network service to the firewall rule. You can also add network services to the default list.
IPv4 and IPv6 are the two network layer protocols that are used on the Internet. The firewall blocks attacks that travel through IPv4, but not through IPv6. If you install the client on the computers that run Microsoft Vista, the Rules list includes several default rules that block the Ethernet protocol type of IPv6. If you remove the default rules, you must create a rule that blocks IPv6.
To add a custom network service to the default list
Article URL http://www.symantec.com/docs/HOWTO27073