现在,同学们对上网不再陌生,因特网已经成为工作学习的重要工具。但是,因特网在给大家提供方便的同时,也引来了网上黑客的拜访。电脑和文件有危险了。别担心,防火墙一来,黑客的威胁就减轻了不少。防火墙(FireWall)就像给电脑穿上防火衣,它包括一系列硬件和软件措施,可以加强内? Nowadays, students are no longer unfamiliar with the Internet. The Internet has become an important tool for work and study. However, while the Internet provides convenience for everyone, it also attracts visits by online hackers. Computers and files are dangerous. Don’t worry, the firewall has reduced the threat of hackers. Firewall (FireWall) is like putting on fireproof clothing for the computer. It includes a series of hardware and software measures that can be strengthened?