195.11.22.33:32789 => 195.55.66.77:80
3.
The recipient server then processes the packet and sends its response.
195.55.66.77:80 => 195.11.22.33:32789
4.
NetDefendOS receives the packet and compares it to its list of open connections. Once it
finds the connection in question, it restores the original address and forwards the packet.
195.55.66.77:80 => 192.168.1.5:1038
5.
The original sender now receives the response.
The sequence of these events is illustrated further in the diagram below.
Figure 7.2. A NAT Example
Example 7.1. Specifying a NAT IP Rule
The following will add a
NAT
rule that will perform address translation for all HTTP traffic
originating from the internal network
lan
as it flows out to the public Internet on the
wan
interface. The IP address of the
wan
interface will be used as the NATing address for all
connections.
Command-Line Interface
gw-world:/> add IPRule Action=NAT
SourceInterface=lan
SourceNetwork=lannet
DestinationInterface=wan
DestinationNetwork=all-nets
Service=http
NATAction=UseInterfaceAddress
Name=NAT_HTTP
Chapter 7: Address Translation
578
Содержание NetDefendOS
Страница 30: ...Figure 1 3 Packet Flow Schematic Part III Chapter 1 NetDefendOS Overview 30 ...
Страница 32: ...Chapter 1 NetDefendOS Overview 32 ...
Страница 144: ...Chapter 2 Management and Maintenance 144 ...
Страница 220: ... Enable DHCP passthrough Enable L2 passthrough for non IP protocols 4 Click OK Chapter 3 Fundamentals 220 ...
Страница 267: ... SourceNetwork lannet DestinationInterface any DestinationNetwork all nets 4 Click OK Chapter 3 Fundamentals 267 ...
Страница 284: ...Chapter 3 Fundamentals 284 ...
Страница 360: ...The ospf command options are fully described in the separate NetDefendOS CLI Reference Guide Chapter 4 Routing 360 ...
Страница 392: ...Chapter 4 Routing 392 ...
Страница 396: ...Web Interface 1 Go to Network Ethernet If1 2 Select Enable DHCP 3 Click OK Chapter 5 DHCP Services 396 ...
Страница 419: ... Host 2001 DB8 1 MAC 00 90 12 13 14 15 5 Click OK Chapter 5 DHCP Services 419 ...
Страница 420: ...Chapter 5 DHCP Services 420 ...
Страница 424: ...2 Now enter Name lan_Access Action Expect Interface lan Network lannet 3 Click OK Chapter 6 Security Mechanisms 424 ...
Страница 573: ...Chapter 6 Security Mechanisms 573 ...
Страница 575: ...This section describes and provides examples of configuring NAT and SAT rules Chapter 7 Address Translation 575 ...
Страница 607: ...Chapter 7 Address Translation 607 ...
Страница 666: ...Chapter 8 User Authentication 666 ...
Страница 775: ...Chapter 9 VPN 775 ...
Страница 819: ...Chapter 10 Traffic Management 819 ...
Страница 842: ...Chapter 11 High Availability 842 ...
Страница 866: ...Default Enabled Chapter 13 Advanced Settings 866 ...
Страница 879: ...Chapter 13 Advanced Settings 879 ...