Tip & How-To about Computers & Internet

Firewall Software Types

Viruses, worms, bacteria, rabbits, etc. are the different types of unwanted programs that infect computers and cause obstruction in normal operation. To avoid this and to protect your computer against infection and to ensure proper operation, install good antivirus software to detect viruses and remove or repair the damaged files virus. Software acts as a gateway firewall; the firewall is four different types. The gateway packet filtering, circuit gateway and proxy server level.The firewall is the firewall packet filters most basic. Packet filtering firewall filters incoming and outgoing packets of the machine based on user configuration. For example, the package contains information on the package. So if the user has blocked a port number or IP address of all packets from that port number or IP address will be removed. A firewall in the safety circuit when recording with TCP or UDP protocol is established between the host and network. At the level of the application firewall works at the application level. A proxy server is a type of relay server.The proxy server forwards this request to a server which in turn looks for the IP address and sends the appropriate proxy server. A proxy acts as a firewall between the machine and the network. You can adjust the proxy settings for their own purposes. And 'one of the most powerful desktop security mechanisms available for security. In addition, the firewall provides the security system can also be used to guide the installation of backup software. For a LAN or network packet's internal filter can be ideal. external networks, application gateways and proxy servers are a must. Prevents unwanted packets of data and content. So if safety is a concern not forget to install the latest firewall software keeps your computer from viruses and fully functional.

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4 Answers

example of computer viruses


virus can be many tyoes as file virus, hidden virus, boot sector virus and other types of virus

Jul 05, 2011 | Computers & Internet

1 Answer

virus


A program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes. Viruses can also replicate themselves. All computer viruses are manmade. A simple virus that can make a copy of it over and over again is relatively easy to produce. Even such a simple virus is dangerous because it will quickly use all available memory and bring the system to a halt. An even more dangerous type of virus is one capable of transmitting itself across networks and bypassing security systems.
Since 1987, when a virus infected ARPANET, a large network used by the Defense Department and many universities, many antivirus programs have become available. These programs periodically check your computer system for the best-known types of viruses.
Some people distinguish between general viruses and worms. A worm is a special type of virus that can replicate it and use memory, but cannot attach it to other programs.

Or


A computer virus is a computer program that can copy itself[1] and infect a computer. The term "virus" is also commonly but erroneously used to refer to other types of malware, including but not limited to adware and spyware programs that do not have the reproductive ability. A true virus can spread from one computer to another (in some form of executable code) when its host is taken to the target computer; for instance because a user sent it over a network or the Internet, or carried it on a removable medium such as a floppy disk, CD, DVD, or USB drive.

May 06, 2011 | Computers & Internet

1 Answer

mt laptop was infected with over 30 worms etc whilst on an american website, i can still boot up but the viruses or whatever have diasabled my own spyware and a dubios scanning tool keeps stating up and wont allow any other programs to start , if i go online will these viruses start taking my passwords etc before i get the chance to remove them ,please help for i have not got the foggiest idea.


You are going to need to run an antivirus program that runs before the operating system starts..if you can, try going online on another computer to search for a program called VBA Rescue..this program loads LINUX into your computer and them searches and destroys the virus' . I have had much success with this program as worms are very hard to remove...I wouldn't even try to run your laptop as you may cause unrepairable damage to the laptop..if you need additional assistance...you can email me at jcameo7270@yahoo.com

Dec 20, 2010 | Computers & Internet

1 Answer

what is symantec antivirus??????????


Symantec/Norton AntiVirus (SAV for Windows, NAV for Mac OS X) is a virus protection program distributed by the Symantec Corporation, offering effective protection features, including infected file quarantine, online virus protection updates, and an automatic scheduler. SAV/NAV is designed to start running as soon as your computer's operating system starts. It runs in the background, checking all vulnerable files for possible infection by malevolent programs called viruses and worms. SAV/NAV does this by looking for the identifying signatures of these worms and viruses and comparing them to known viruses for which it has files. When it detects an infected file, it notifies you and manages the infection according to your preferences.

Aug 29, 2010 | Symantec AntiVirus Scan Engine

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