When you allow or block a program through the firewall on your Windows PC, you create
a firewall rule. Windows presets a bunch of firewall rules, and some programs create rules
when they’re installed. To view the list of rules, follow these steps:
1. Tap the Windows key and type Windows Firewall.
2. Choose Windows Firewall Control Panel from the search results. The Windows Firewall window appears.
3. On the left side of the window, click the Advanced Settings link. The Windows Firewall with Advanced Security console appears.
The center part of the console window lists basic firewall actions. These actions say
the same thing: Disallowed inbound or outbound connections are blocked. To see more specifics,
choose a category such as Inbound Rules from the left side of the window, illustrated here.
Each program or service features an inbound rule, outbound rule, or both. The rule can
be enabled or disabled, or it can be deleted to remove the rule and have the firewall prompt
again for access.
The details shown in the Windows Firewall with Advanced Security console are nerdy. Yet
it’s a useful location if you mistakenly allow a program and want to block it again: Select
the program’s rule and press the Delete key to remove it.
This is an excerpt from:
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More Windows Administration Information:
• Server Virtualization - What It's All About
• The Security and Maintenance of Messages in Outlook Express
• Computer Data Backups - Test Now or Cry Later
• Font Basics
• Windows 2000 Security Overview
• A Handful of Useful Run Commands: calc, notepad, wordpad, voice recorder, control
• Put HyperTerminal on Windows 7
• How to Share a Folder in Windows 7
• Turn Off Windows XP Service Pack 2 Firewall
• How to Setup DHCP (Dynamic Host Configuration Protocol) on a Windows Server