Many companies use firewalls to protect their computer systems against viruses, worms, and other malicious software attacks. A lot of networking systems incorporate both hardware and software firewalls for maximum protection.
What can a firewall do? A firewall acts like an actual “wall”, “block” or “barricade” for your computer system. All data transmitted to and from your computer will have to pass through the firewall. All bits of data are therefore, sifted as it tries to pass through the firewall. Suspicious data are instantly blocked by the firewall to safeguard the whole system against possible corruption or damage.
There are different types of firewall and each one is designed for specific purposes. Some firewalls are designed to protect data encryption, others protect packet filters, and some are used to secure application gateways.
For a business, online computer system security is crucial. Identity thieves often evade computer systems to steal information that they can use to commit fraud. This is why business owners especially must be aware on protecting their system.
Malicious Attacks that Can Be Used Against You
Identity thieves or hackers use cunning tactics to steal information. One way of hacking is called “IP spoofing”. An untrusted network will try to evade a computer system by “disguising” or “spoofing” a trusted network. This is made possible by using an IP address that “looks like” the IP address of a valid source.
Another way to steal or evade systems is by using Network Packet Sniffers. Batches of data we send and receive over the internet are transmitted in “packets”. Network Packet Sniffers pick out or in a sense, “sniff’ these packets as they are transmitted. This method of hacking is most frequently used by hackers because it’s easier to do. Also, this tactic is harder to recognize which is why a lot of hackers get away with their crimes.
Password stealing is another favorite tactic. Hackers can “guess” passwords using tools that automatically enter all possible combinations at a high speed rate. Some hackers may also use the Brute-Force Logon technique or the Password Cracking software and others may try to guess easy passwords manually.
Yes, installing a firewall in your network doesn’t mean you will be invincible against all sorts of malicious attacks. However, having a firewall is certainly better than not using a firewall at all. Even the simplest types of viruses can invade your system if you don’t have any line of defense against them.
About the Author
Maureen Stesson is a writer and a sharp internet marketer in her own right. For years, she has mastered the art of online marketing to snowball online success. She currently shares her knowledge in order for others to learn internet marketing.