Security on the Internet ... For many years now, this topic has been actively discussed by the media of various degrees of “yellowness”, completely forgetting that it would be nice to give some specific recommendations, rather than telling a bunch of scary, but not too believable stories.
I would like to tell you a little how to configure the firewall yourself, without resorting to the services of various kinds of computer help.What it is
Before talking about tuning, you need to conduct a short digression into the depth of the topic. A firewall is a special program that prevents intrusions on your computer from the depths of the Internet, and also blocks the actions of spyware tools that can transfer your personal information to the side.
When is it really needed?
Contrary to popular belief, personally angry hackers are unlikely to attack your computer. Of course, if you are some kind of commercial director of the bank, then this can really become a reality, but you can not be especially afraid of everyone else.
But if you have a “white” IP (not dynamic), you pick up a simple ftp server at home or you decide to raise a site on your home computer in order of individual masachism ... Then the firewall will come in handy!
How to configure the firewall correctly so that it copes with all the tasks assigned to it as efficiently as possible? Immediately make a reservation that we will talk about general settings, since there are too many utilities of this kind in the modern market.Package Configuration
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«» () 1-1025, UDP 1-1024. ? , «» Windows. , .
5000, UDP 1900. , .
But how to set up a firewall, Windows 7 which provides even in the basic package? If you do everything described above, you can consider yourself completely protected.
What can be opened?
You can open it DNS (and for the company UDP 53), FTP (TCP 20-21). If there is such a need (own http-server), you can also open TCP 80. Almost all ICMP packets can be safely allowed. A little trick: if you prohibit calls to the 80th port of remote computers from ICQ, then the amount of advertising will significantly decrease., . , , , , !
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