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Network Address Translation (Nat) Pinhole Settings - Motorola Netopia 3397GP Administrator's Handbook

Netopia 2200, 3300 and 7000 series routers


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Administrator's Handbook

Network Address Translation (NAT) Pinhole Settings

NAT pinholes let you pass specific types of network traffic through the NAT interfaces on the Motorola
Netopia® Gateway. NAT pinholes allow you to route selected types of network traffic, such as FTP
requests or HTTP (Web) connections, to a specific host behind the Motorola Netopia® Gateway trans-
To set up NAT pinholes, you identify the type(s) of traffic you want to redirect by port number, and you
specify the internal host to which each specified type of traffic should be directed.
The following list identifies protocol type and port number for common TCP/IP protocols:
❑ FTP (TCP 21)
❑ telnet (TCP 23)
❑ SMTP (TCP 25),
❑ TFTP (UDP 69)
❑ SNMP (TCP 161, UDP 161)
set pinhole name name
Specifies the identifier for the entry in the Gateway's pinhole table. You can name pinhole table entries
sequentially (1, 2, 3), by port number (21, 80, 23), by protocol, or by some other naming scheme.
set pinhole name name protocol-select { tcp | udp }
Specifies the type of protocol being redirected.
set pinhole name name external-port-start [ 0 - 49151 ]
Specifies the first port number in the range being translated.
set pinhole name name external-port-end [ 0 - 49151 ]
Specifies the last port number in the range being translated.
set pinhole name name internal-ip internal-ip
Specifies the IP address of the internal host to which traffic of the specified type should be transferred.
set pinhole name name internal-port [ 0 - 65535 ]
Specifies the port number your Motorola Netopia® Gateway should use when forwarding traffic of the
specified type. Under most circumstances, you would use the same number for the external and inter-
nal port.

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