NB3000-Line-Hd User Manual 4.2
5.5.4. NAPT
This page can be used to configure Network Address and Port Translation (NAPT) for packets
traversing the system. NAPT hereby modifies IP addresses or/and TCP/UDP ports in match-
ing IP packets. By tracking those connections, it will also automatically adjust the returning
packets of an IP session.
Figure 5.26.: Masquerading
The administration page lets you specify the interfaces on which masquerading will be per-
formed. 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 masquer-
aded
Source address
The source address or network from which matching packets
are masqueraded
Source netmask
The source netmask of the network from which matching pack-
ets are masqueraded
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