防火墙

In order to improve the existing generic service oriented intrusion tolerant system in aspect of architecture and function, this paper presents an improved adaptive intrusion tolerant system with improved architecture, functional modules and key techniques. From an overall consideration of the system, mixed with firewall, intrusion detection and other traditional technologies, IAITS combines redundancy, diversity and various fault tolerant techniques, thus enhancing reliability through active replication and secure multicast, reaching tradeoff between system complexity and intrusion tolerance ability by redundant design only in most vulnerable components, and supporting data protection on the basis of architecture with only a little extra cost in software and hardware by making use of topological coherence between application servers group and key share servers group.

本文针对目前面向通用服务的容忍入侵系统在架构和功能上的不足，提出了一种改进的自适应容忍入侵系统，在系统结构、功能模块以及关键技术上做出了改进的设计：从整体上考虑系统结构，将防火墙、入侵检测等传统的安全技术融合到容忍入侵系统的设计中；综合了以冗余与多样性为主的多种容错技术，采用主动复制与安全多播，增强了系统的可靠性；仅在最易受攻击的部件上采用冗余设计，兼顾系统复杂性与容侵能力；利用应用服务器组和密钥服务器组在拓扑结构上的一致性，在基本不增加软硬件开销的情况下，从架构上支持数据保护的功能。

Does not require additional software installation and works transparently through NAT and Firewalls.

不需要额外的软件安装和透明工程通过NAT和防火墙。

In this situation, you may use a TURN proxy to aid firewall traversal.

在这种情况下，你可以使用转代理援助你防火墙穿越。

It tracks each packet traversing the firewall and makes sure that they are legitimate.

该软件跟踪每个穿过防火墙的数据包并且确保它们都是合法的。

The walls begin to tumble down.

我的防火墙开始崩溃。

All our server's IP addresses were blocked by UBI's firewall.

所有 MLW 伺服器使用之 IP 地址均被 UBI 的防火墙所阻隔。

When you access the Internet, firewalls also prevent unauthorized users to connect to your computer.

您上网的时候，防火墙也阻止未经授权的用户连接到您的电脑上。

Also, if you're behind a firewall, you have to open up ports and/or unblock the application in Windows.

另外，如果您在防火墙后面，你必须开放港口和/或打开应用窗口。

Click on it and if you're running Windows XP, you should be asked whether you want to Block or Unblock this program for the firewall.

点击它，如果你正在运行Windows XP ，你应该问你是否要封锁或解除阻止这一计划，为防火墙。

Of course, you can uncheck all rules for IE and you will see an alert.

当然，你可以不勾选所有IE的防火墙规则，而你可以看到警示讯息。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐