NBB-800
User Manual for NRSW version 4.5.0.100
5.5.4. NAPT
This page can be used to configure Network Address and Port Translation (NAPT) for packets travers-
ing the system. NAPT hereby modifies IP addresses or/and TCP/UDP ports in matching IP packets.
By tracking those connections, it will also automatically adjust the returning packets of an IP session.
NetModule Router Simulator
Hostname NB1600
Software Version 4.4.0.103
© 2004-2020, NetModule AG
Firewall
Administration
Address / Port Groups
Filtering Rules
NAPT
Masquerading
Inbound Rules
Outbound Rules
Masquerading
This menu can be used to configure the interfaces on which masquerading will be performed.
Interface Source
WAN ANY
HOME INTERFACES ROUTING FIREWALL VPN SERVICES SYSTEM
LOGOUT
Figure 5.26.: Masquerading
The administration page lets you specify the interfaces on which masquerading will be performed. NAT
will hereby use the address of the selected interface and choose a random source port for outgoing
connections and thus enables communication between hosts from a private local area network towards
hosts on the public network.
Parameter Masqerading Rules
Interface The outgoing interface on which connections will be masqueraded
Source address The source address or network from which matching packets are
masqueraded
Source netmask The source netmask of the network from which matching packets are
masqueraded
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