IPSec提供哪些服务？

IPSec的应用方式有（）

A:端对端安全 B:远程访问 C:VPNs D:多提供商VPNs

IPsec的设计目标是（）。

为IPv4和IPv6提供可互操作的，高质量的，基于密码学的安全性传输

Ipsec通过（）确保通信安全。

A:加密安全服务 B:流量控制服务 C:负载均衡算法 D:内容过滤机制

(1) is used to ensure the confidentiality,integrity and authenticity of the two end points in the private network． (2) ，an application—layer protocol，authenticates each peer in an IPSec transaction．IKE negotiates security policy，determining which algorithm may be used to set up the tunnel．it alsohandles the exchange of session keys used for that one transaction．
Networks that use (3) to secure data traffic can automatically authenticate devices by using (4) ，which verify the identities of the two users who are sending information back and forth．IPSeccan be ideal way to secure data in large networks that require secure connections among many devices．
Users deploying IPSec can (5) their network infrastructure without affecting the applications on individual computer．The protocol suite is available as a software-only upgrade to the networkinfrastructure．This alows security to be implemented without costly changes to each computer．Mostimportant，IPSec allows interoperability among different network devices，PCs and other computingsystems．

A:IPSec B:SSL C:L2TP D:The Internet Key Exchange

IPSec不能提供( )服务。

A:流量保密 B:数据源认证 C:拒绝重放包 D:文件加密

IPSec不能提供的服务是______。

A:流量保密 B:数据源论证 C:拒绝重放包 D:文件加密

IPSec不能提供的服务是______。

A:流量保密 B:数据源论证 C:拒绝重放包 D:文件加密