You create firewall rules to allow your computer to send traffic to, or receive traffic from, programs, system services, computers, or users. Firewall rules can allow the connection or block the connection.
To add an advanced rule:
1 Click the Settings button.
2 Click Net Defense, then click the General tab.
3 In the Security Level area, select Trusted Network or Untrusted Network.
4 Click Advanced Rules, then click Add.
5 In the Rule Description box, type the name of the rule.
6 In the Action area, select one of the following options:
§ To block the connection, select Block traffic.
§ To allow the connection, select Allow traffic.
7 From the Screensaver Mode area, select what to do if the screensaver is active.
§ To apply the rule when the screensaver is on or off, select Both on and off.
§ To apply the rule when the screensaver is on, select On.
§ To apply the rule when the screensaver is off, select Off.
8 To record the rule’s traffic in the Net Defense Packet log, select the Record this traffic in the Packet Log check box.
9 Click the Hosts tab. On the Hosts tab, you specify the source of the traffic to block or allow.
10 Select one of the options. In the corresponding box, type the source’s address.
11 Click the Ports and Protocols tab. On the Ports and Protocols tab, you specify which ports and protocols, if any, should be affected by the rule.
12 From the Protocol list, select one of the following options:
§ To affect all protocols and all traffic, select All protocols.
§ To affect Internet protocols, select IP Type. From the IP Type list, select an Internet protocol.
§ To affect only the Transmission Control Protocol, select TCP. From the Local ports list, select which ports on your computer are affected. From the Remote ports list, select which ports on the remote host are affected.
§ To affect only the User Datagram Protocol, select UDP. From the Local ports list, select which ports on your computer are affected. From the Remote ports list, select which ports on the remote host are affected.
§ To affect only the Internet Control Message Protocol, select ICMP. From the ICMP types list, select a protocol.
13 If you selected anything other than All protocols in the previous step, from the Traffic direction list, select the traffic to affect.
§ To affect both incoming and outgoing traffic, select Both incoming and outgoing.
§ To affect only traffic coming into your computer, select Incoming only.
§ To affect only traffic leaving your computer, select Outgoing only.
14 Click the Scheduling tab. On the Scheduling tab, you can create a rule to take effect only during certain time periods. For example, you can block all traffic after 10:00 p.m.
§ Select the Enable rule during this time period only check box.
§ In the Start time box, type the beginning of the time period.
§ In the End time box, type the end of the time period.
§ Click OK.
See Also