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 (nobody)...and 371 guests Last 5 registered Oplandisks nothingstar N_loop yipe foxtrotromeo Browse members... |
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Members 8025Messages 2613457 Today 3 Topics 127500 |
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what are they? what´s their use? thanx. |
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A system designed to prevent unauthorized access to or from a private network. Firewalls can be implemented in both hardware and software, or a combination of both. Firewalls are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranets. All messages entering or leaving the intranet pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria. 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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thanx windowlicker. the thing is i got Norton 2002, but i don´t have that much experience on firewalls, any advice on what to do?...do i really need one?...where or how to "build" one? :) |
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Go download Black Ice Defender. I use a hardware firewall. Dont know about software ones that much. And if you are on cable/dsl its reccomended that you have one. |
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where can i download it?, at download.com they´ve only got upgrades. thanx again man ;) |
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c´mon man...WHERE AT? :( |
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I have some friends who recommend . The current version is not free, the previous version is. |
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i use zonealarm |
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i would go wth zonealarm too -its free and dead easy to use http://www.zonelabs.com/ |
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