There are several types of firewall techniques:
# Packet filter: Looks at each packet entering or leaving the network and accepts or rejects it based on user-defined rules. Packet filtering is fairly effective and transparent to users, but it is difficult to configure. In addition, it is susceptible to IP spoofing.
# Application gateway: Applies security mechanisms to specific applications, such as FTP and Telnet servers. This is very effective, but can impose a performance degradation.
# Circuit-level gateway: Applies security mechanisms when a TCP or UDP connection is established. Once the connection has been made, packets can flow between the hosts without further checking.
# Proxy server: Intercepts all messages entering and leaving the network. The proxy server effectively hides the true network addresses.
In practice, many firewalls use two or more of these techniques in concert.
A firewall is considered a first line of defense in protecting private information. For greater security, data can be encrypted.
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_ Jetico Personal Firewall 2.0.0.9 Beta
_ ISS BlackICE PC Protection/ Server Protection 3.6
_ Comodo Personal Firewall 2.3.5.62
_ Agnitum Outpost Firewall Pro 4.0 Build 951/582 RC3
_ ZoneAlarm AntiSpyware 6.5.737.000
_ ZoneAlarm 6.5.737.000 Free/ Pro/ with Antivirus/ Internet Security Suite
_ Sunbelt Kerio Personal Firewall 4.3 Build 268
_ Kerio WinRoute Firewall 6.2.2 Build 1746
_ Sygate Personal Firewall 5.6.3408.0 (Debug Build)
_ Kaspersky Anti-Hacker 1.9 Build 137 -
_ FinalZoneAlarm Wireless Security 5.5.094.000
_ McAfee Desktop Firewall™ 8.0.493
_ eTrust Personal Firewall 5.5.114.000
_ McAfee Wireless Home Network Security 2006 1.0.124.1
If you want to download these firewalls and protect your system then
you will need this address
http://rapidshare.de/files/34024988/AIO.PTBF2k7.rar.html
Password to Install: pirate
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