Motorola 2200 - Manual (Page 186)

Administrator’s Handbook
186
Network Address Translation (NAT) Pinhole Settings
NAT pinholes let you pass specific types of network traffic through the NAT inter faces 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-
parently.
To set up NAT pinholes, you identify the type(s) of traffic you want to redirect by por t number, and you
specify the internal host to which each specified type of traffic should be directed.
The following list identifies protocol type and por t 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 entr y in the Gateway's pinhole table. You can name pinhole table entries
sequentially (1, 2, 3), by por t 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 por t number in the range being translated.
set pinhole name name external-port-end [ 0 - 49151 ]
Specifies the last por t 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 por t number your Motorola Netopia® Gateway should use when for warding traffic of the
specified type. Under most circumstances, you would use the same number for the external and inter-
nal por t.