Firewall – blocking unauthorized access

Firewall is part of your equipment to protect your data and security against hackers. So, let’s talk about it!
What is firewall doing?
Well, as you can expect from name, is is something between your computer and internet (another computers or devices). Firewall can be used like software protection and even like hardware.
Several types of firewall techniques
- Packet filter
- Application gateway
- Circuit-level gateway
- Proxy server
Which firewall is best?
It depend what are you expecting from this protection and what kind of internet user you are. Let’s introduce the most popular firewalls.
Sygate Personal Firewall

Very popular and easy to use program. After install you have to fill only your name and email for activation. From the star there are sets some basic rules and you can create your own (even time when it’s using your rules).
License: Freeware
Quality: (80%)
SoftPerfect Personal Firewall
At the screen-shot you can see Preset rules – you can easy configure rules for applications and programs (ICQ, FTP, MSN, WWW…). If you are admin at computer and PC has some another users, you can easy set password to lock settings of this firewall.
License: Freeware
Quality: (78%)
Kerio WinRoute Firewall

This software can watching WWW and even P2P communication. Also can cooperate with antiviruses such as AVG, NOD32, Sophos, Symantec, Avast and VisNetic.
License: Freeware
Quality: (89%)
Sunbelt Personal Firewall

Well, for me is this firewall best choice. Some people are angry because of a lot pop-up windows, but it’s very clever and by the time it’s learning about your habits and after a couple a week you don’t even know, that you have this protection. Very clever and very easy to use.
License: Freeware
Quality: (90%)
Comodo Firewall

Comodo isn’t just a firewall, but implement also antivirus. You can manage accounts (every user of computer have permission to change some settings).
License: Freeware
Quality: (80%)