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6.5.1 Inbound port shifting
Introduction
GUI
CLI
E-NIT-CTC-20040716-0004 v1.0
This is an extension of Two-Way NAT where ports of inbound traffic are statically
translated from outside port range to inside port range. Port ranges must have the
same size.
Create a new NAT map and fill in the fields.
Portmap properties
Interface
Protocol
Outside address
-> Portrange
Inside address
-> Portrange
Access list
Foreign address
An inbound connection to 20.0.0.1 on port 8080, will be forwarded to inside
address 192.168.1.64 on port
An inbound connection to 20.0.0.1 on port 8081, will be forwarded to inside
address 192.168.1.64 on port 81.
=>:nat mapadd intf=ppp_pppoa type=napt outside_addr=20.0.0.1
inside_addr=192.168.1.64 outside_port=8080-8081 inside_port=80-81
Value
pppoa
tcp (then address translation will only be applied on
TCP packets)
20.0.0.1
8080 to 8081 (your own choice)
192.168.1.64
80 to 81 (your own choice)
Define IP address (es) or leave empty.
Define IP address (es) or leave empty.
80
Inbound port shifting
57
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