Firewall Configuration

A firewall is a device or a set of devices, which can be implemented in any of the hardware, software or both. All the messages passing through the firewall are verified to meet some level of security criteria.

It acts as a computer security barrier, which analyzes all the incoming and outgoing traffic to and from your computer or network based on the firewall settings. There are some common types of firewalls like: Application level gateway, Packet filtering firewall, Circuit gateways and Hybrid firewall.

Application level gateway firewall works on the application layer of the protocol stack. It works more intelligently than the packet filtering firewall. Packet filtering firewall examines the information contained in the header of the message packets.

There are some factors based on which the filters can be added or removed from the firewall:

1. IP address

2. Ports

3. Protocols

IP address: Every computer connected to Internet has a unique IP address. The firewall configuration can be customized to block any IP address so that your computer will not allow any kind of communication to take in between.

Ports: The firewall can be configured to allow or block messages from any port number.

Protocols: There are some commonly used protocols like IP, HTTP, TCP, FTP, and SMTP etc., which can be included in the firewall filter.

Some operating systems, such as Microsoft Windows offer built-in firewalls that are turned on by default to block all the incoming threats from Internet. There are several other third party firewalls available. You can choose any one the firewall to replace the default firewall in Windows.

Firewall Configuration

A firewall is a device or a set of devices, which can be implemented in any of the hardware, software or both. All the messages passing through the firewall are verified to meet some level of security criteria.

It acts as a computer security barrier, which analyzes all the incoming and outgoing traffic to and from your computer or network based on the firewall settings. There are some common types of firewalls like: Application level gateway, Packet filtering firewall, Circuit gateways and Hybrid firewall.

Application level gateway firewall works on the application layer of the protocol stack. It works more intelligently than the packet filtering firewall. Packet filtering firewall examines the information contained in the header of the message packets.

There are some factors based on which the filters can be added or removed from the firewall:

1. IP address

2. Ports

3. Protocols

IP address: Every computer connected to Internet has a unique IP address. The firewall configuration can be customized to block any IP address so that your computer will not allow any kind of communication to take in between.

Ports: The firewall can be configured to allow or block messages from any port number.

Protocols: There are some commonly used protocols like IP, HTTP, TCP, FTP, and SMTP etc., which can be included in the firewall filter.

Some operating systems, such as Microsoft Windows offer built-in firewalls that are turned on by default to block all the incoming threats from Internet. There are several other third party firewalls available. You can choose any one the firewall to replace the default firewall in Windows.

Configuring Windows Firewall General Settings

The Windows Firewall general settings allow you to configure these options:

On (recommended). This is the default setting (with Don't allow exceptions not selected).

Don't allow exceptions. When this check box is selected, the firewall is placed into On With No Exceptions mode which blocks all unsolicited requests to connect to your computer. This includes requests to programs or services that you select on the Exceptions tab. Use the Don't allow exceptions setting when you need maximum protection for your computer, such as when you connect to a public network in a hotel or airport, or when a vulnerability is discovered and either you have not had time to download a hotfix for your computer or a hotfix is unavailable.

After you have installed the latest operating system service packs and software updates, you can restore normal Internet functionality by returning the operational mode to On with Don't allow exceptions cleared.

Off (not recommended). Turning off Windows Firewall might make your computer more vulnerable to damage from viruses, worms, or intruders.

To modify the recommended Windows Firewall default general settings, perform these tasks:

• Open Windows Security Center
• Open Windows Firewall
• Configure Windows Firewall On with No Exceptions mode
• Disable Windows Firewall
• Verify Windows Firewall General settings are applied

Note: The steps to disable Windows Firewall are listed here but should only be performed by advanced users for computer administration purposes, or if your computer is protected by another hardware or software firewall.

• Requirements to perform this task
• Credentials: You must be logged on as a member of the local Administrators group.
• Open Windows Security Center
• To open Windows Security Center

From the Windows XP SP2 desktop, click Start, and then click Control Panel.


In Control Panel, click Security Center.

Open Windows Firewall

To open Windows Firewall

1. In Windows Security Center, under Manage security settings for, click Windows Firewall.

Configure Windows Firewall On With No Exceptions

To configure Windows Firewall On with no exceptions mode

1. In the Windows Firewall dialog box, select the Don't allow exceptions check box.
click ok

Windows firewall

Today the protection of computers is very important because with out the security of he computer anyone can hack your documents from the computer. In the market , software's are developing so Microsoft invent the software called windows firewall and it is inbuilt feature of the windows xp. Lot of software's in the market but they all are costly and most of the people cannot buy it so windows launched this software within the windows and it protects the computer from unwanted threads .we can enable the firewall in windows with the help of this path.
start < firewall="">< disabled="" ok="" and="" than="" click="" on="" close="">
It has three options i.e.
1-General
2-Exceptions.
3-Advanced.

1-General:-In the general tab ,there are two options called on and of while if the ON button is selected than it blocks all the out sided traffic from the Internet connected to this computer and only allow the selected programs or software's who are selected in exception if the off button is selected it means that windows firewall is off that means windows firewall is not responsible to corrupt the computer from viruses because computer viruses are coming from the Internet and it blocks the programs so might be computer corrupted it is very important to ON the windows firewall.

2-Exceptions:In the windows firewall exceptions tab we can see the the selected programs which programs are selected or not so that we can find out which program is blocked and which allow .windows firewall blocks the incoming network traffic or connections except for those programs and services which are selected in exceptions and we can manually add or remove the traffic or programs and services accordingly by add program button and can also delete the program from the list in windows firewall. so it has so many features.

3:-Advanced:-In the advanced tab it has so many advanced options like blocking the protocols like icmp and network connections and security logging. In the security logging settings create a log file the purpose of troubleshooting so all the log files can be created in the file and we can see the exact error.

Internet control message protocol .In the icmp protocol we can only allow block all the network or either block the share data in the Internet and also block the ping it means that the computers are not pinging but data share is allow so there is one more option that windows firewall that is network connection in that we can add another connection and select it .
So windows firewall has so many advanced features and it is very helpful for the protection of the computer . So with the help of the windows firewall we can save our data and document in the Internet that is very important because every one wants to save our data and no one does not want to loss the data .

Windows firewall is also known as ICF (Internet connection firewall), is a security software that monitors the the programs and restricts the information or software's that travels data from one computer to another in the Internet restricts some one who try to access the computer through the Internet from the outside ,windows firewall security needs your permission to enter into the computer otherwise windows firewall blocks the programs and he never access the computer, windows firewall is used for security or privacy and is very important to On the windows firewall it saves our data and computer from viruses.

Firewall Security Protect Your Personal Information

Protecting your personal information has become an increasing necessity as the number of sites that require personal information increase. There are an increasing number of sites that you can purchase things on and an increasing number of sites that have spyware, adware, malware and viruses. All of these can result in your information being transmitted through the internet to third party companies or you can end up losing your data due to crashes.

A firewall security software application is going to provide you protection against a wide variety of things. Primarily, a firewall is going to limit the access programs have from your computer to the internet. This is to prevent your personal information from being transmitted to the originator of the spyware, adware, or virus that was implanted onto your computer, it also prevents your programs from updating automatically. As a result, it becomes necessary to manually rather than automatically update your programs.

Firewall security software also provides you with protection while you are online. It helps you to prevent sites from accessing your computer while you are surfing the internet. There are many different types of websites including websites you may visit on a daily basis that attempt to access your computer. A firewall security software application can provide you with an added level of security.

There are some things to consider when using a firewall security program. You need to carefully monitor the settings of the software in order to ensure that you do not end up blocked from accessing the internet completely. It is one of the major complaints with firewall applications. They can also block any site, which uses connections such as streaming video sites, download sites, and file storage sites.

The necessity of these programs, however, cannot be denied, there are an increasing number of sites, which can create an issue with firewalls, and there are a number of different levels of control that the firewall can be set at depending on the type that you get. You can go with the most basic firewall security software, which is found in later versions of windows. This does not offer a great deal of flexibility when it comes to setting up permissions and monitoring activity.
There is a variety of different firewall security software applications. There are also firewall applications that come with internet security suites as well as standalone applications. They also have a wide spectrum of features that allow you to provide a great deal of flexibility. Firewalls can also help to provide you with privacy and help to block certain types of sites. On most firewalls there are options to block particular sites and can further help with parental controls to help to protect your family.

There are a number of different types of firewalls. Some are just basic applications others are more complex however, they all have one thing in common they are designed to limit the access your computer has to the internet and to limit the access the internet has to your computer.

Firewall Configuration

A firewall is a device or a set of devices, which can be implemented in any of the hardware, software or both. All the messages passing through the firewall are verified to meet some level of security criteria.

It acts as a computer security barrier, which analyzes all the incoming and outgoing traffic to and from your computer or network based on the firewall settings. There are some common types of firewalls like: Application level gateway, Packet filtering firewall, Circuit gateways and Hybrid firewall.

Application level gateway firewall works on the application layer of the protocol stack. It works more intelligently than the packet filtering firewall. Packet filtering firewall examines the information contained in the header of the message packets.

There are some factors based on which the filters can be added or removed from the firewall:

1. IP address

2. Ports

3. Protocols

IP address: Every computer connected to Internet has a unique IP address. The firewall configuration can be customized to block any IP address so that your computer will not allow any kind of communication to take in between.

Ports: The firewall can be configured to allow or block messages from any port number.

Protocols: There are some commonly used protocols like IP, HTTP, TCP, FTP, and SMTP etc., which can be included in the firewall filter.

Some operating systems, such as Microsoft Windows offer built-in firewalls that are turned on by default to block all the incoming threats from Internet. There are several other third party firewalls available. You can choose any one the firewall to replace the default firewall in Windows.

Firewall Configuration

A firewall is a device or a set of devices, which can be implemented in any of the hardware, software or both. All the messages passing through the firewall are verified to meet some level of security criteria.

It acts as a computer security barrier, which analyzes all the incoming and outgoing traffic to and from your computer or network based on the firewall settings. There are some common types of firewalls like: Application level gateway, Packet filtering firewall, Circuit gateways and Hybrid firewall.

Application level gateway firewall works on the application layer of the protocol stack. It works more intelligently than the packet filtering firewall. Packet filtering firewall examines the information contained in the header of the message packets.

There are some factors based on which the filters can be added or removed from the firewall:

1. IP address

2. Ports

3. Protocols

IP address: Every computer connected to Internet has a unique IP address. The firewall configuration can be customized to block any IP address so that your computer will not allow any kind of communication to take in between.

Ports: The firewall can be configured to allow or block messages from any port number.

Protocols: There are some commonly used protocols like IP, HTTP, TCP, FTP, and SMTP etc., which can be included in the firewall filter.

Some operating systems, such as Microsoft Windows offer built-in firewalls that are turned on by default to block all the incoming threats from Internet. There are several other third party firewalls available. You can choose any one the firewall to replace the default firewall in Windows.