Firewall exception что это

18.04.202218.04.2022 admin 0 Comments

Making Exceptions to Firewall Protection

When Windows Firewall is turned on and running, you don’t have to do anything special to use it. It remains on constant vigil, automatically protecting your computer from hackers and worms trying to sneak in through unprotected ports. Ports for common Internet protocols, such as e-mail and web browsing, remain open and monitored so that you can easily use protocols safely.

Internet protocols that don’t use standard e-mail and web ports may require that you create an exception to the default firewall rules for incoming traffic. Examples include instant messaging programs and some online games. When you try to use such a program, Windows Firewall displays a security alert.

The message doesn’t mean the program is «bad.» It means that to use the program, Firewall has to open a port. If you don’t recognize the program name and publisher shown, click Cancel. If you want to use the program, decide for which networks the exception should be allowed. For example, if the traffic is coming from another computer on your local network, select the Private Networks option. For traffic coming from the Internet, select Public Networks (you can select either or both, as needed). Then click Allow Access. Allowing access for a program doesn’t leave the associated port wide open; it only creates a new rule that allows that one program to use the port. You’re still protected because the port is closed when you aren’t using that program. The port is also closed to programs other than the one for which you unblocked the port. If you change your mind in the future, you can reblock the port, as described in the next section.

Manually configuring firewall exceptions (allowed apps and features)

Normally, when you try to use a program also referred to in Windows 10 Firewall as an app) that needs to work through the firewall, you get a security alert message. Occasionally, you may want, to manually allow or block an app through the firewall. If you have administrative privileges, you can do that through the Allowed Apps page. To open that page, click Allow an App through Windows Firewall in System and Security (near the Windows Firewall item in the Control Panel).

Items on the list with a check mark beside them represent apps that work through the firewall. You also see any exceptions you created in response to a security alert.

You probably aren’t familiar with most of the apps listed in the Allowed Apps and Features list, so you shouldn’t guess which ones to select or deselect. Leave the selections as they are. If you later decide to use one of the listed features, you’re prompted at that point to allow access for the app or program if necessary.

Adding an app exception

You can unblock ports for apps that aren’t listed under Allowed Apps and Features. Do this only if specifically instructed to do so by an app manufacturer you know and trust.

Tip:
You can choose the scope for the program within the Allowed Programs and Features list by placing a check mark in the Private or Public columns for the program.

IP Addresses on Home/Office Networks
When you set up a network using the Network Setup Wizard, each computer is automatically assigned a 192.168.0.x IP address (the x represents a number that is unique to each computer). For example, if the computers are sharing a single Internet connection, the first computer may receive the address 192.168.0.1, and the subsequent computers will have addresses in that same address space.

All computers on the network have the same subnet mask of 255.255.255.0. The subnet mask tells the computer that the first three numbers are part of the network address (the address of your network as a whole), and the last number refers to a specific host (computer) on that network. The 192.168. addresses are often referred to as private addresses because they can’t be accessed directly from the Internet.

Disabling, changing, and deleting exceptions

The check boxes in the Allowed Apps and Features list indicate whether the exception is enabled or disabled. When you clear a check box, the exception is disabled and traffic for that program is rejected. You can easily enable or disable a rule for a program as needed because the program name always remains in the list of exceptions.

To change the scope of an exception in the exceptions list, click the check box in the Private or Public column. To remove a program from the exceptions list and stop accepting unsolicited traffic through its port, click the program name and then click the Remove button.

Advanced Firewall Configuration

It’s for advanced users and network and security administrators who need to configure Windows Firewall to comply with an organization’s security policy. All these options require administrative privileges. We don’t go into great detail about what the options mean because we assume you’re working to comply with an existing policy.

Caution
If you aren’t a professional administrator, stay out of this area altogether. Don’t guess and hack your way through these settings to see what happens. Doing so could leave you unable to connect to the Internet or exposed to attacks by hackers.

Open Windows Firewall with Advanced Security

To get to the advanced configuration options for Windows Firewall, open Windows Firewall from the System and Security item in the Control Panel. Then click the Advanced Settings link in the left pane. The firewall console opens.

Changing firewall profile properties

Clicking the Windows Firewall Properties link near the bottom of the console takes you to the dialog box shown. You can use tabs at the top of the dialog box to configure the Domain, Private, and Public settings. The fourth option applies to IPsec (IP Security), commonly used with virtual private networks (VPNs), which are described later in this section. By default, Inbound Connections are set to Block and Outbound Connections are set to Allow. You can change either setting by clicking its button.

Firewall alerts, unicast responses, local administrator control

Each profile tab has a Customize button in its Settings section. Clicking that button provides an option to turn off firewall notifications for that profile. Administrators can also use options on that tab to allow or prevent unicast responses to multicast and broadcast traffic. You also have an option to merge local administrator rules with rules defined through group policy.

Security logging

Each profile tab offers a Logging section with a Customize button. Click the Customize button to set a name and location for the log file, to set a maximum size, and to choose whether you want to log dropped packets, successful connections, or both. You can use the log file to review firewall activity and to troubleshoot connection problems caused by the firewall configuration.

Customizing IPsec settings

The IPsec Settings tab in the firewall properties provides a way to configure IPsec (IP Security). Clicking the Customize button under IPsec Defaults reveals the options. The Default settings in each case cause settings to be inherited from a higher-level group policy object (GPO). To override the GPO, choose the options you want to apply to the current Windows Firewall instance. When you override the default, you can choose key exchange and data integrity algorithms. You can fine-tune Kerberos V5 authentication through those settings.

Clicking OK or Cancel in the Customize IPsec Defaults dialog box takes you back to the IPsec Settings tab. There you can use the IPsec Exemptions section to exempt ICMP from IPsec, which may help with connection problems caused by ICMP rules.

Note:
IPsec is a set of cryptographic protocols for securing communications across untrusted networks. It is commonly associated with tunneling and VPNs.

That covers the main firewall properties. You can configure plenty more outside the Properties dialog box, but. most of these go far beyond anything the average home user needs to be concerned with. Advanced users needing more information can find plenty of information in Firewall’s Help section.

Inbound and outbound rules

In the left column of the main Windows Firewall with Advanced Security window, you see Inbound Rules and Outbound Rules links. These provide very precise control over Windows Firewall rules for incoming and outgoing connections. Here is small part of the possibilities there. Scroll up or down to see more.

The settings in this window should be a simple matter for most professional administrators. Options (and the Help link) in the Actions column on the right provide additional information to assist you. You can also change any exception in the center column by rightclicking and choosing Properties.

Источник

Add Exceptions to Windows Firewall Setup

When enabled, the Windows Firewall blocks all incoming network traffic to your computer except those applications and ports you allow. Use the Windows Firewall control panel utility to manage these exceptions.

Note: It is not necessary to disable the Windows Firewall to use our software. Firewalls provide a much higher level of security to your computer than default Windows security.

We strongly recommend that you leave the firewall in place and use the mechanisms in the firewall to allow the traffic you need.

Firewall Program Exception

The installers for RPM Remote Print Manager® (RPM) and ExcelliPrint® create a program exception. The program exception allows the software to receive print jobs from your host system. You might enable the exception only for specific network types. If our software is not receiving connections, and you have already established that the host system uses the correct IP address, we recommend reviewing the firewall exception.

Adding Program Exception

Note: Do not make any changes to existing exceptions.

Your new firewall exceptions will take effect immediately.

Firewall Port Exceptions

Determine Ports to Allow for RPM

While this is a more involved process, you may wish to use port exceptions instead. If so, delete the auto-created program exception and follow the instructions below.

Determine Ports to Allow for ExcelliPrint

You can configure the software to listen on multiple TCP ports simultaneously. First, you need to determine which ports your print host uses, then create an exception for each port in the Windows Firewall.

To determine the ports in use, follow these instructions.

Note: If you connect to ExcellePrint only from the local computer, adding exceptions for HTTP and HTTPS ports is unnecessary.

Adding Port Exceptions

Now that you have determined which port numbers need to be allowed, add an exception to the Windows Firewall for each port. To add the firewall exceptions, follow these instructions.

Note: Do not make any changes to the existing exceptions.

Your new firewall exceptions will take effect immediately.

Brooks products use firewall exceptions

This topic first came up for us many years ago when Microsoft added a firewall to Windows XP. So naturally, we found as soon as the first user tried to run one of our products; consequently, this may be one of the longest-running pages on our website.

If you need a good software print server, please give our RPM Remote Print Manager product a try! Download the free 21-day trial and see what it can do for you. Be sure your firewall is open on ports 515 and 9100 and that you’re not already running the Microsoft TCP/IP services module.

Источник

Firewall exception что это

This article applies to the following products:

Solution

Firewall troubleshooting?

This article is part of a series of recommended steps to troubleshoot firewall issues. Click here to start with step 1.

Follow the instructions below to use the Troubleshooting Wizard to automatically create a firewall exception that will allow your application or device to connect to your home network.

Click Setup → Network protection.

Click Troubleshooting wizard.

Locate your application or device in the list and click Unblock. If your application or device is not on the list, check the temporary IP address blacklist. You may see other blocked communications in the list that are unrelated to your issue; this is normal and is not related to your system security.

Click Done. Alternatively, you can click Unblock another and repeat the steps above to unblock another communication.

Figure 1-4

The device or application is now able to connect to your network.

The IP address of your application or device may have been added to the temporary IP address blacklist. If it has, you can allow the communication directly from the list. To do so, follow the steps below:

Click Setup → Network protection.

Click Temporary IP address blacklist.

Figure 2-3

Источник

Add Windows Firewall Exceptions in Windows 10

Edited by Lukward Thomason, VisiHow, Eng, johnlanda2 and 6 others

Hi! You’re watching VisiHow, and this is a tutorial on how to add an exception in Windows Firewall on Windows 10 computers.

Steps

This concludes our tutorial on how to add an exception in Windows Firewall on Windows 10 computers. Thank you for watching VisiHow! If you have any other comments or questions, please leave them in the comment section below.

Video: Add Windows Firewall Exceptions in Windows 10

Questions and Answers

Can my PC allow Google Chrome through the firewall using Windows 10?

I upgraded to Windows 10 from Windows 7. Since this change Google Chrome is not allowed through the Windows firewall. I want it to.. I have tried: Change settings to allow Google Chrome. It does not.. I think it was caused by: Upgrading at your suggestion to Windows 10