電腦防火牆是什麼？，肚子圖書館

什麼是個人防火牆?
A personal firewall is a firewall-like software application which runs on a users PC.個人防火牆是一個防火牆式應用軟件用戶舉辦了籌委會.

Traditional software-based firewalls run as the only application on stand-alone computers which have been hardened to protect against hackers.傳統的軟件為基礎的防火牆僅適用於辦成獨立式電腦已經硬化防止黑客入侵. Personal firewalls run on PC's along with all of the other applications required by the PC user.個人電腦防火牆跑的同所有其他應用所需的微機用戶.

Traditional firewalls protect entire networks.傳統的防火牆保護整個網絡. Personal firewalls are normally designed to protect only the PC upon which they are installed.旨在保護個人防火牆通常只在個人電腦所安裝的.

Because they run on the same computer as the other applications, personal firewalls have more information available to them than traditional network firewalls.因為他們跑同一計算機作為其他用途,個人防火牆有更多資料提供給他們比傳統網絡防火牆. The traditional network firewall knows whether the traffic is TCP , UDP , or ICMP .傳統網絡防火牆的TCP不知交通、UDP協議或失蹤. It knows what port number the traffic uses.它知道一些港口的交通設施. It may know something about the protocol being utilized.也許知道這個協議被利用. It also knows the source and destination of the traffic.它也知道來源地和目的地的交通. A personal firewall knows all of this, but also knows what software application is sending or receiving the traffic.個人防火牆知道這一切,而且還知道什麼是應用軟件發送或接收的流量. .

Most personal firewalls pop-up windows to notify the user about unknown network traffic.大多數個人防火牆彈起窗口通知用戶網絡流量約不明. The user is then given the choice to allow or deny the traffic.然後用戶可以選擇允許或拒絕流量.

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回答者：任虎成 .

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