防火墙

Since the firewall mainly withstands the attacks caning from the exterior network, it does not take any security measure firm the interior network.

由于防火墙的主要防范目标是来自于外部网络的攻击，对于自己内部网络却基本上不采取什么安全措施。

TBFirewall is designed to connect one or more local networks to another, forming an internetwork, but it can also run without problem in other network models.

TB防火墙的设计把一个或多个本地网络连接到另一个上，形成一个互联网，但它还能在其他网络模式下毫无问题的运行。

This paper proposes a simple and efficient algorithm for creating a network firewall through IP packet filtering..

针对采用分组滤波构造网络防火墙存在的技术难点，提出了相应的解决方法。

This paper introduces a FPGA based IP packet filter that can serve as the core of a hardware based Firewall.

文章着重介绍了基于FPGA的IP报文过滤处理模块设计，它是基于硬件防火墙的核心处理部分。

It may be a spanking new computer or a jalopy for the digital world, data backup is as important as a virus scan or keeping a firewall.

这可能是一个崭新的电脑，或者是在数字世界台破旧车，数据备份是重要的病毒扫描或保持一个防火墙。

Strawberry rookie should be the requirements of this group, jellies of various commonly used firewall software in the LAN settings on the right.

应草莓这帮菜鸟的要求，果冻对各种常用的防火墙软件在局域网内的正确设置进行了讲解。

The young men asked for coffee at the F.W. Woolworth store lunch counter.

年轻的人问在防火墙伍尔沃思商店柜台咖啡午餐。

It includes four parts: 1 Part I, it introduces the basic knowledge of computer viruses such as computer virus definition, history and important viruses events, features, behavior phenomena, difference with computer software and hardware troubles, damage behavior and capability, classification, naming, future trend, etc; 2 Part II, it introduces the corresponding knowledge of computer systems related to computer viruses such as the composing of software and hardware of the computer system, storage media and its working mechanism, interrupt technologies,.com/.exe/.pe file formats and their working mechanism, etc; 3 Part III, it introduces computer virus mechanism and theory such as computer virus structure, work flow, working mechanism of key modules, typical technologies used to design computer viruses including the corresponding traditional technologies (interrupt filching, memory resident, etc.), the corresponding new routine technologies (self-encrypting, Mutation Engine, etc.), and the corresponding new technologies used by some prevalence computer viruses such as macro viruses, e-mail viruses, worm, hacker, Trojan, mobile phone viruses, the working mechanism analysis of some kinds of typical and prevalence computer viruses such as file-type viruses, macro viruses, e-mail viruses, worm viruses, hacker, Trojan, mobile phone viruses, the analysis of some typical and prevalence computer viruses examples including BALL viruses, WORD macro viruses, WantJob viruses, Code Red viruses, BO Trojan, etc; 4 Part IV, it introduces the defense and killing technologies of computer viruses such as the aim and criterion of computer viruses defense and killing, prevention methods and corresponding technologies, detection technologies (comparison method, character code scanning method, behavior inspecting method, analysis method, etc.), manual and automatic killing technologies, immunity technologies such as IBM digital immunity system, new anti-viruses technology trends (real-time anti-viruses technologies, 32 kernel technologies, active kernel technologies, etc.), some typical virus defense and killing softwares (Symantec AntiVirus product, PC-Cillin AntiVirus product, etc.), the defense and killing method analysis of some kinds of typical and prevalence computer viruses (file-type viruses, macro viruses, worm viruses, hacker, etc.), for example, firewall and intrusion detection technologies for anti-hacker, the defense and killing of some typical and prevalence computer viruses examples including WORD macro viruses, Code Red viruses, BO Trojan, etc.

课程内容具体包括四大部分：1）第一部分，介绍计算机病毒基本知识，包括：计算机病毒定义、病毒发展史及重大事件、病毒特点、病毒表现现象及与软硬件故障的区别、病毒破坏行为及危害性、病毒的传播途径及媒介、病毒分类、病毒的命名及计算机病毒技术发展趋势等内容；2）第二部分，介绍与计算机病毒有关的计算机系统相关知识，包括：计算机系统软硬件组成、存储介质结构及工作原理、计算机系统引导机理及流程、中断技术、。com/。exe/。pe等文件格式及工作机理等内容；3）第三部分，讲解计算机病毒机理，包括：计算机病毒的组成结构、病毒工作流程、病毒引导/触发/感染/破坏等模块的工作机理、计算机病毒所采取的编制技术（包括中断窃取/内存驻留等传统编制技术、自加密/隐形/变形机等新的常规编制技术、宏病毒/电子邮件病毒/网络蠕虫/特洛伊木马/黑客/手机病毒等一些新的流行病毒所采取的编制技术等）、一些类型的典型或流行计算机病毒的工作机理分析（包括：引导型病毒、文件型病毒、宏病毒、电子邮件病毒、蠕虫病毒、黑客、特洛伊木马、手机病毒等）、一些典型或流行的计算机病毒实例剖析（包括：小球病毒、WORD宏病毒、求职信病毒、红色代码病毒、冰河木马等）等内容；4）第四部分，讲解计算机病毒防治技术，包括：计算机病毒防治目的、病毒防治策略及规范、病毒在管理和技术上的预防措施、病毒检查技术（包括：比较法/病毒特征码扫描法/行为监测法/虚拟执行法/分析法等）、手工和自动病毒清杀技术、病毒免疫技术（包括：针对某种一次性感染病毒的基于病毒标签的免疫方法/基于自我完整性检查的计算机病毒免疫方法/IBM的数字免疫系统等）、反病毒技术的新发展（包括：实时反病毒技术/32位内核技术/主动内核技术/以毒攻毒技术等）、诺顿/趋势/金山等公司的病毒防治软件产品、一些类型的典型或流行的计算机病毒（包括：引导型病毒、文件型病毒、宏病毒、蠕虫病毒、电子邮件病毒、手机病毒、黑客、特洛伊木马）的防治措施（其中，也包括介绍面向防范黑客攻击的防火墙、入侵检测技术）、一些典型或流行的计算机病毒防治实例剖析（包括：WORD宏病毒、红色代码病毒、冰河木马v1.1/v2.2等）、多层次病毒防护体系等内容。

This option should be on if you intend to run any firewalling or masquerading on your Linux machine.

如果您要在机器上运行防火墙或伪装，应当启用这一选项。

Generally this option is disabled, but if you are building a firewall or a masquerading host, you will want to enable it.

通常， 这一选项是禁用的，但是，如果您要构建防火墙，或一台伪装主机，可能需要启用它。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。