Security on the Internet ... This topic is alreadywhich year actively discuss media of varying degrees of "yellowness", completely forgetting that it would be nice to give some specific recommendations, rather than telling a bunch of terrible, but not too believable stories.
I would like to tell you a little about how to configure the firewall yourself, without resorting to the services of various kinds of computer help.
Before you talk about the configuration, you need tohold a small digression into the depth of the topic. A firewall is a special program that prevents intrusions to your computer from the depths of the Internet, and also blocks the actions of spyware that can transfer your personal information to a party.
Contrary to popular belief, yourcomputer malicious hackers are unlikely to attack. Of course, if you are any commercial director of a bank, this can really become a reality, all the rest can not be particularly afraid.
But if you have a "white" IP (not dynamic),you pick up a simple ftp server at home or decide in order of individual mazahism to raise a website on your home computer ... That firewall is sure to come in handy!
How to configure the firewall correctly so that itas effectively as possible coped with all the tasks assigned to him? At once we will make a reservation that we will talk about general settings, since there are too many utilities of this kind in the modern market.
First, we will configure the rules that apply to incoming packets. This is more important, since with the outgoing the normal firewall will surely cope on its own (based on the rules prescribed by the developer).
We prohibit all incoming "correspondence" (TCP) onports within 1-1025, as well as UDP for the ranges 1-1024. What is it for? The thing is that it is there that most of all "holes" in the protection of the OS of the Windows family. In general, their list would be good to find out even before you configure the firewall.
Be sure to cover the doors on TCP 5000, and alsoon UDP 1900. As a result of all the above actions, most of the system ports are under fairly reliable protection, the level of which meets all the requirements of the average user.
But how to configure the firewall, Windows 7 which provides even in the basic package? If you do everything described above, you can consider yourself completely protected.
To open it is possible DNS (and for 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 resolved. A little trick: if you deny access to the 80 port of remote computers from ICQ, then the amount of advertising will be significantly reduced.
Since you configure the firewall as described abovemethods is simple enough, then even beginners and completely inexperienced beginners will surely cope with this. Note that no network screen can compensate for the tortuosity of the user's hands, and therefore once again do not visit questionable sites, do not open links that lead to anything far away!
And how to open the firewall completely? As a rule, in the settings of any such application there is an item "allow everything" or something like that. Use this as rarely as possible.