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. Adding a NAT Rule
To add a NAT rule that will perform address translation for all HTTP traffic originating from the internal network,
follow the steps outlined below:
Command-Line Interface
First, change the current category to be the main IP rule set:
gw-world:/> cc IPRuleSet main
Now, create the IP rule:
gw-world:/main> add IPRule Action=NAT Service=http
SourceInterface=lan
SourceNetwork=lannet
DestinationInterface=any
DestinationNetwork=all-nets
Name=NAT_HTTP
NATAction=UseInterfaceAddress
Return to the top level:
gw-world:/main> cc
7.2. NAT
Chapter 7. Address Translation
343
Содержание NetDefend DFL-260E
Страница 27: ...1 3 NetDefendOS State Engine Packet Flow Chapter 1 NetDefendOS Overview 27...
Страница 79: ...2 7 3 Restore to Factory Defaults Chapter 2 Management and Maintenance 79...
Страница 146: ...3 9 DNS Chapter 3 Fundamentals 146...
Страница 227: ...4 7 5 Advanced Settings for Transparent Mode Chapter 4 Routing 227...
Страница 241: ...5 4 IP Pools Chapter 5 DHCP Services 241...
Страница 339: ...6 7 Blacklisting Hosts and Networks Chapter 6 Security Mechanisms 339...
Страница 360: ...7 4 7 SAT and FwdFast Rules Chapter 7 Address Translation 360...
Страница 382: ...8 3 Customizing HTML Pages Chapter 8 User Authentication 382...
Страница 386: ...The TLS ALG 9 1 5 The TLS Alternative for VPN Chapter 9 VPN 386...
Страница 439: ...Figure 9 3 PPTP Client Usage 9 5 4 PPTP L2TP Clients Chapter 9 VPN 439...
Страница 450: ...9 7 6 Specific Symptoms Chapter 9 VPN 450...
Страница 488: ...10 4 6 Setting Up SLB_SAT Rules Chapter 10 Traffic Management 488...
Страница 503: ...11 6 HA Advanced Settings Chapter 11 High Availability 503...
Страница 510: ...12 3 5 Limitations Chapter 12 ZoneDefense 510...
Страница 533: ...13 9 Miscellaneous Settings Chapter 13 Advanced Settings 533...