Nokia A032 User Manual page 208

The port number
selects the required
service and
distinguishes, for
example, Web server
requests from FTP
requests.
202
For each NAT hole, you need to specify the
following:
Parameter
Here are some well-known port
Port number
assignments:
• 21 – FTP
• 23 – Telnet
• 25 – SMTP
• 53 – DNS
• 68 – BOOTP
• 69 – TFTP
• 80 – WWW
• 110 – POP3
• 162 – SNMP
Protocol The protocol to be used (e.g. TCP).
IP Address The IP address of the machine hosting
the service on your local network.
As an example, if you set the following NAT
hole parameters:
Port number: 80
Name: WWW
Protocol: TCP
IP address: 192.168.0.77
and your static external IP address is 200.1.2.3,
an external user would enter the following
URL:
http://200.1.2.3
but would actually access port 80 on machine
with IP address 192.168.0.77. The NAT firewall
would make the required address translation.
Description
Nokia A032 Advanced User Guide