网络安全标准IPSec分析及应用

IPSec在Internet中属于IP层的安全协议,IP层上的安全对于网络安全是非常重要的.详细分析了网络安全标准IPSec协议的体系结构,包括安全协议、密钥交换协议、安全联盟和认证与加密算法,并着重介绍了IPSec在实现端到端的安全和虚拟专用网VPN中的应用.     

IPSec协议研究及基于Linux的安全网关的实现

文章首先详细地研究了IPSec协议,包括IPSec协议及其体系结构、工作模式和相关协议等。并在校园网环境下,提出如何用Linux操作系统作平台,在一个服务器上实现一个支持IPSec协议的安全网关。     

基于IP技术的安全管理探析

随着因特网的广泛应用,网络的安全就越来越重要,IETF着手制定了一套开放标准网络安全协议IPSec,将密码技术应用在网络层。由于IPSec协议的安全特性,IPSec协议成为实现VPN的主要方式。     

IPv6中IPSec的应用与研究

IPv6与IPv4相比在安全方面具有很多特点,将IPSec集成到协议内部是IPv6的优势。介绍了IPv6网络的协议安全和安全机制,论述了IPSec与其它服务的互通。     

IPSec封装模式在不同场景下的应用

部署IPSec VPN时,在不同封装模式中需使用不同协议下的数据封装格式,并且IPSec通过在不同场景中使用不同的封装模式提供差异化安全服务。在阐述数据包封装格式基础上,详细分析不同场景中的封装模式选择并分析其原因,探讨IPSec封装模式在不同场景下的应用,为无保护的IP网络提供信息安全传输服务。     

基于IPSec的虚拟专用网应用研究

介绍了虚拟专用网VPN的基本概念，讨论了IPSec协议的结构、工作模式及利用IPSec实现虚拟专用网VPN技术，给出一个基于IPSec的VPN应用为例。     

基于IPSec的企业网络VPN连接实现

介绍了VPN和IPSec VPN的定义,以及实现IPSec VPN的关键技术（包括隧道技术、加解密认证技术、密钥管理技术、访问控制技术）和主要安全协议,并对企业网络环境下IPSec VPN的配置进行了详细介绍,可为企业IPSec VPN构建提供参考借鉴。     

IPv6安全技术研究

针对IPv6在网络安全方面的特性,论述了IPv6网络安全机制以及和IPSec的关系,着重研究了IPSec所提供的网络安全服务与实现原理,指出IPSec在IPv6协议安全方面的作用,讨论了IPSec与传统安全技术结合实现网络安全的机制与原理,并分析了Ipv6面临的安全问题以及如何实现安全保护的措施和策略.     

基于IPV6协议安全性的分析与实现

本文简要介绍了互联网协议IPV6及提供的新特性,分析了IPV6安全协议IPSec.介绍了IPsec的体系结构、认证机制、加密机制及SA安全群组.详细讨论了认证头AH、封装安全栽荷协议(EsP)和密钥交换协议(IKE)的工作模式、认证算法、加密算法等,提出了在路由器或防火墙上执行IPsec,来实现为周边的通信提供强有力的安全保障.     

互联网安全传输技术探讨

在互联网上进行数据的安全传输是当前研究的一个方向，此文介绍了互联网安全传输技术的功能和特性，着重探讨了当前使用较为广泛的IPSec安全传输与SSL安全传输这两种技术。IPSec是一种建立在Internet协议（IP）层之上的协议；SSL则是利用PKI的证书体系，在传输过程中使用多种密码算法保证数据的机密性、完整性、不可否认性而完成秘密传输。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

汉字倒说

汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

钱生钱!

我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.