how does a firewall work?
472277
You may have heard the term firewall before but have you ever wondered how does a firewall work and why do I need one? A computer firewall protects your computer by putting up a barrier to keep anyone from accessing your files when you are surfing the Internet.\n\nOnce a hacker get access to your files malicious codes spread through your computer retrieving your personal information that the hacker can use to steal your identity or charge items with your credit card numbers. So how does a firewall work?\n\nA firewall not only stops this from happening but keeps the malicious file out of your computer so it can't spread to your other files. That's why it's called a firewall because its job is similar to a firewall that keeps a fire from spreading from one area to the next.\n\nIf a hacker tries to invade your computer files to get your passwords and credit card numbers you've used for online purchases he simply can't get access. Computer firewall software will allow good data in but blocks all bad data from entering your computer.\n\nGood data is when you are surfing the Internet, visiting web sites, downloading photos or data files. But bad data, like hacker programs, or anything that spies on your Internet habits without your knowledge is not allowed.\n\nWhen computer firewall protection is enabled, everything that goes in and out of your computer is monitored. With the amount of malicious programs on the Internet today it's also a way to prevent spyware and adware from getting into your computer.\n\nMany people think that the anti-virus software that came with their computer protects them from hackers. While it's important to keep anti-virus software updated for viruses it does nothing to secure your computer against direct hacker attacks.\n\nWhether you have a dial-up, cable, broadband or DSL connection, every minute that your computer is connected to the Internet, it is at risk. Hackers are looking to do you harm and even steal your identity. Identity theft is one of the fastest growing crimes today.\n\nOne of the most effective ways to guard your personal information and keep these criminals away from your sensitive passwords and credit card numbers is the use of computer firewall protection.\n\nYou'll hear the term firewall used a lot in the near future because these problems are growing at an alarming rate on the Internet. You'll probably also hear other people ask, how does a firewall work and why do I need one? But now you'll know the answer
209815
A firewall can prevent an unautorized hacking. Now a days your antivirus comes along with an firewall. A firewall can definatly prevent to a certain extent. However there is no ways you can be completly safe from the internet.
423545
it's a firewall\nhttp://www.click-me.go.ro
345170
Assuming it is a static IP (always on type of connection), it would be possible to attack a computer or network of computers.  This of course assumes malicious intent.  However, having a firewall in place provides protection from such attacks.
739067
To check your firewall settings, Go to Control Panel, double-click on Firewall settings, a window will open up, put a check mark where it says (On- Recomended) this will turn your firewall on...You can also set your setting in that same window  just click the Advance button there you will see all settings, just put a click mark into what every you want to show or take it out on what ever you want to not show up.. Good Luck
830939
A firewall is a piece of software that sits between two networks and regulates what traffic can go back and forth. Typically a firewall is a device that sits between a company's network and it's ISP, but it may also be a piece of software sitting between your computer and your cable modem.\n    Firewalls protect networks and users by only allowing certain types of traffic into and out of them. Most corporate firewalls are configured to allow OUT only web browser traffic by users (HTTP/HTTPS/FTP) and allow IN only Mail, VPN, and Web traffic to specific machines.\n    By restricting traffic allowed in to specific protocols and specific machines, users are protected from people trying to snoop around a network. Also, by restricting traffic allowed out, some spy-ware and other malicious software can be prevented from communicating.\n    Firewalls are configured by defining rules, specifically which ports and addresses to allow and restrict. A typical firewall rule says allow any machine on the inside network to communicate with any machine outside on port 80 and 443 (http and https). Some more secure firewalls are smart enough to look at the traffic and determine if it's truly http, instead of relying only on the port number. \n    Another rule may be to allow any outside computer to talk to the IP of a company's web server on port 80 only. This creates a "hole" in the firewall, allowing people on the outside access to the webserver through their browser. \n    Firewalls are often combined with other technologies, such as NAT and load balancers to provide additional security and other non-security related functions.
980052
Windows Firewall settings\nTo open Windows Firewall, click Start, click Control Panel, and then click Windows Firewall. Windows Firewall has three settings: On, On with no exceptions, and Off. \n\nOn: Windows Firewall is turned on by default, and normally you should leave it that way. With this setting, Windows Firewall blocks all requests to connect to your computer, except for those from programs or services on the Exceptions list.\n\nOn with no exceptions: When you select the Don’t allow exceptions check box, Windows Firewall blocks all requests to connect to your computer, including those from programs or services on the Exceptions list. Use this 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 dangerous virus is spreading over the Internet. There is no need to keep Don’t allow exceptions selected all the time, because when it is, some of your programs might not work correctly, and the following services are blocked:\n\nFile and printer sharing \nDiscovery of network devices \nPreconfigured programs and services on the Exceptions list \nAdditional items that you have added to the Exceptions list \nWhen you select Don’t allow exceptions, you can still send and receive e-mail, use an instant messaging program, or view Web pages.\n\nOff: With this setting, your computer is much more vulnerable to harm from unknown intruders or viruses from the Internet. This setting should only be used when it is necessary to turn off Windows Firewall for computer administration purposes.
177010
firewalls limit incoming and outgoing data either personal or group. they are designed to protect from malicious intentions.
1036035
A firewall is a piece of hardware and/or software which functions in a networked environment to prevent some communications forbidden by the security policy. It is like a Border Protection Device.\nA firewall has the basic task of controlling traffic between different zones of trust. Typical zones of trust include the Internet (a zone with no trust) and an internal network (a zone with high trust).\nThe ultimate goal is to provide controlled connectivity between zones of differing trust levels through the enforcement of a security policy and connectivity model based on the least privilege principle.
1118973
run your firewall and it shouldnt be able to
112855
Definitely don't use two firewall programs.  They can conflict with each other and prevent networking/internet access altogether.  Windows fire wall is not good ao it is surely the one to turn off.  If you want to test your fire wall you can go to www.grc.com and run the Shields Up program to check your open ports or download the Leak Test program to see if your firewall catches it.
842296
Zone Alarm.\n\nThis is the best Firewall from my experience, nothing gets through.\n\nThe only problem is it blocks EVERYTHING, you have to allow certain processes to have access not only to the internet but also to the privileged zone.
498323
well its very difficult to bypass firewall\nyou have to find a bug in their firewall\nand their is no other way as they are meant for stopping these things
300317
modify the firewal's settings if it's on your pc\nif the firewall is on a server you must ask the admin to do that \nBYE
301424
In computing, a firewall is a piece of hardware and/or software which functions in a networked environment to prevent some communications forbidden by the security policy, analogous to the function of firewalls in building construction. A firewall is also called a Border Protection Device (BPD), especially in NATO contexts, or packet filter in BSD contexts. A firewall has the basic task of controlling traffic between different zones of trust. Typical zones of trust include the Internet (a zone with no trust) and an internal network (a zone with high trust). The ultimate goal is to provide controlled connectivity between zones of differing trust levels through the enforcement of a security policy and connectivity model based on the least privilege principle.\n\nProper configuration of firewalls demands skill from the administrator. It requires considerable understanding of network protocols and of computer security. Small mistakes can render a firewall worthless as a security tool.
49677
If the firewall is under your control, you have to figure out which port the webcam uses, and configure the firewall to allow connections through it.\n\nIf the firewall is not under your control, you still have to figure out which port the webcam uses, then ask the administrator to open the port for you.
138087
What Firewall setup are you using?