Some experience of firewall program in use

Because of the proliferation of hackers, so in order to prevent malicious supply, firewall software emerged. But we should be able to use the firewall software correctly, let it really serve us. Below I on the firewall software use several experience to introduce to everybody.

First, security level

Now most firewalls have defined the level of security, in order to give different needs of users different security controls, but many users do not specifically understand these, in order to secure, blindly to the security level to "high security level", that the higher the security level the better. Not really. If your computer is too safe, you will find that online games will not be able to start, and the video program will not be able to access the online video files (this is a great loss for ADSL users). So what do all the security levels mean?

Low security level: The computer will open all services, but prohibit access to files, printer sharing services on the Internet. Applies to users who provide services on the local area network. This is the maximum level of freedom, so it is limited to "network gurus".

Medium security Level: Prohibit access to system-level services (such as HTTP, FTP, etc.). The machines inside the LAN only allow access to file, printer sharing services. Use dynamic rule management to allow open port services for programs that are authorized to run, such as online gaming or video telephony software. and can guarantee for example to send and receive mail and transfer files of the general user, so generally this security level is the default value.

High Security level: The system will screen out all the ports open to the outside, prohibit access to provide all services, the common Trojan programs and attacks to intercept, provide a strict control of the network access capabilities; For users who simply surf the web. Of course the network game you can not play.

In addition, all security levels control the access of the application to the network.

Second, the repair loophole

Most firewall software can patch system vulnerabilities, many of which are patched with their own programs. However, "Jinshan net Dart" is not the same, it investigates the system loopholes, tell you the official website address patch, so you download and install the patch. This is good for win 9X users, because the official thing is trustworthy, but for win XP users is not good, because the win XP SERVICE PACK1 patch package to 134MB, so you can use according to the actual needs.

Third, don't let the firewall cannot prevent fire

A virus has recently appeared, called "W32." Campurf@mm ", is transmitted through the mail attachment, the attachment name is FC.EXE, it can cause the firewall program installation process interrupted. If this virus is in, you can run the REGEDIT.EXE program, the health value FC in Hkey_local_machinesoftwaremicrosftwindowscurrentversionrun/ Runfc.exe Delete, then upgrade your antivirus software, and then kill the virus. How to prevent the virus from invading? First of all, the firewall and anti-virus software should be used together, the two are often upgraded; second, inexplicable mail attachments are best not to open; third, according to log records, to find out the hackers do not often hit the time, in this "safe time" online, can greatly reduce the probability of attack. Because after all, the function of the firewall is not unlimited, while, outsmart!