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配置 Internet 访问. 概述. 接入 Internet 的方式 用 Router 接入 internet 用 NAT 接入 internet. 接入 Internet 的方式. 通过 router 接入 internet 通过防火墙接入 internet 通过 NAT 接入 internet 用 ICS 接入 internet 通过 Proxy Server 接入 internet. Intranet. Internet. Router. 通过 router 接入 internet. - PowerPoint PPT Presentation
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配置 Internet 访问
概述
接入 Internet 的方式 用 Router 接入 internet
用 NAT 接入 internet
接入 Internet 的方式
通过 router 接入 internet
通过防火墙接入 internet
通过 NAT 接入 internet
用 ICS 接入 internet
通过 Proxy Server 接入 internet
通过 router 接入 internet
Connecting Your Network to the Internet by Using a Router: 最简单的接入 Internet 的方式 必须采用公网 IP 地址
Router
InternetIntranet
通过防火墙接入 internet
Securing Internet Connections by Using a Firewall: 阻止非授权的访问 可以定义进出数据包的规则
IntranetInternet
Router
FirewallFirewall
通过 NAT 接入 internet
Client ComputersClient Computers
IP = 192.168.1.3
IP = 192.168.1.4
IP = 192.168.1.5
Computer Running NATInternal IP = 192.168.1.1External IP = 131.107.2.1
1. client 发送数据包到 NAT 服务器
4.NAT 服务器修改 IP 包头 并将其发送到 client
2. NAT 服务器修改 IP 包头 并将其发送到 Iinternet 上的Web 服务器
3. Web 服务器发送数据包到 NAT 服务器
Internet
Web ServerIP = 131.107.50.1
用 ICS 接入 internet
Connecting to the Internet by Using Internet Connection Sharing: 最简单的 NAT 用于 small-office and home-office 共享访问 Internet
Internet
Small-Office or Home-Office Network
Internet Connection Sharing
通过 Proxy Server 接入 internet
InternetLAN
Proxy Server
Connecting to the Internet by Using a Proxy Server: 通过 Caches 减少网络流量，提高性能
配置 NAT 访问 internet
安装 NAT
配置 NAT
安装路由接口
安装 NATRouting and Remote Access
Action View
Tree General
InterfaceRouting and Remote AccessServer StatusLONDON (local)
Routing InterfacesPortsAppleTalk RoutingIP Routing
GeneralStatic RoutesIGMPNetworking
Remote Access PoliciesRemote Access Logging
Loopback Loopback 127.0.0.1 Up OpLocal Area Connector Dedicated 192.168.1.200 Up OpInternal Internal Not available Unknown NoTest_demanddial Demand-dial Not available UP Dis
IPX Routing
Type IP Address Administr… Op
New Interface…New Routing Protocol…
Show TCP/IP InformationShow Multicast Forwarding Table…Show Multicast Statistics
View
RefreshExport List…
Properties
Help
配置 NATNetwork Address Translation (NAT) Properties
General TranslationAddress AssignmentName Resolution
Network Address Translation (NAT) Global
Event logging:
Log errors onlyLog errors and warnings
Log the maximum amount of informationDisable event logging
OK Cancel ApplyApply
安装路由接口Routing and Remote Access
Action View
Tree Network Address Translation (NAT)InterfaceRouting and Remote Access
Server StatusLONDON (local)
Routing InterfacesPortsAppleTalk RoutingIP Routing
GeneralStatic RoutesIGMPNetwork Address Translation (NAT)
Remote Access PoliciesRemote Access Logging
IPX Routing
Total mappings Inbound pack…
New Interface…
Show DHCP Allocator InformationShow DNS Proxy Information…
View
DeleteRefreshExport List…
Properties
Help
New Interface for Network Address Translation (NAT)This routing protocol runs on the interface that you select belowInterfaces:
Local Area Connection
OK Cancel
复习
接入 Internet 的方式 用 Router 接入 internet
用 NAT 接入 internet
