Erradicate Adware and Spyware for once and for all. Not all Adware and Spyware removal programs are created equal. PC
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New computers as low as $499
You can have a completely custom-built computer starting at $499! Whatever your needs, PC Fixer has a solution. From
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Will maintenance and service contracts save money?
Think about it...how often have you had computer meltdowns at your business or home and been frustrated at th
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What is a Flash Drive?
We here at PC Fixer are asked this question quite a bit. A flash drive is a storage device that uses flash memory rat
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Can PC Fixer really make my computer faster?
Without question PC Fixer can and will make your computer faster. In some cases the difference can be quite dramatic.
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Quick Tips for the PC
Frozen and slow computers can be a real annoyance. Chances are that if your computer is freezing or crashing you may
FREQUENTLY ASKED QUESTIONS
Q1.) What is a virus? Q2.) How often should I back up? Q3.) Should I shut down my computer every night? Q4.) What is spyware? Q5.) What is an error code? Q6.) What is RSS? Q7.) What is a Trojan? Q8.) What is a computer worm? Q9.) What is a server? Q10.) What is a hard drive? Q11.) What is an IP address? Q12.) What is a blog? Q13.) What is RAM? Q14.) What is a Firewall?
A14.) A firewall is a dedicated hardware device, or software program running on another computer, which inspects network traffic passing through it, and denies or permits passage based on a set of rules.
A firewall's main task is to regulate the flow of traffic between computer networks of different trust levels. One example is the Internet which is a zone with no trust and an internal network which is a zone of higher trust. A zone with an intermediate trust level, situated between the Internet and a trusted internal network, is often referred to as a "perimeter network" or a Demilitarized zone (DMZ).
A firewall's role within a network resembles firewalls with fire doors in building construction. In the former case, it is used to prohibit network intrusion to the private network. In the latter case, it is intended to contain and delay structural fire from spreading to nearby structures.
Without proper configuration, a firewall can often become worthless. Standard security practices dictate a "default-deny" firewall ruleset, in which the only network connections which are allowed are the ones that have been explicitly allowed. Unfortunately, such a configuration requires detailed understanding of the network applications and endpoints required for the organization's day-to-day operation. Many businesses lack such understanding, and therefore implement a "default-allow" ruleset, in which all traffic is allowed unless it has been specifically blocked. This configuration makes inadvertent network connections and system compromise much more likely.
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