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Figure 21 Port Mapping, Add Screen
6. In the Port Mapping field, select Enable. This will enable
this port only.
7. In the Local IP field, enter the fixed IP address reserved for
the host computer. Be sure to enter the four separate parts
of the IP address into the four separate boxes in the field.
8. In the Start Port field, enter the first port of the range you
want to map to this computer. (See Table 2 for a few of the
most commonly needed well-known ports.)
9. In the End Port field, enter the last port of the range you
want to map to this computer. To assign a single port to this
computer, enter the same port number in the Start and End
fields.
NOTE: Port ranges are consecutive. If you need to assign
non-consecutive ports to a PC, simply enter the PC
54
twice with the different port ranges (see Figure 20
on page 52).
10. In the Protocol field, select TCP, UDP, or TCP/UDP
according to the needs of your network. TCP port
mappings are different from UDP port mappings, but most of
the common well-known ports are the same across both
protocols. The ports listed in Table 2 are TCP protocol port
mappings.
11. Enter any Remark or comment to help you remember what
this port mapping function is.
12. Click Apply. This will take you back to the Port Mapping
screen (see Figure 20 on page 52).
13. To change the port mapping for a PC, select the PC’s IP
address on the Port Mapping screen (see Figure 20 on
page 52) and click the Modify button.
14. To delete all mapping for a PC, select the PC’s IP address
on the Port Mapping screen (see Figure 20 on page 52) and
click the Delete button.
15. When you are finished with the port mapping, return to the
Port Mapping screen (see Figure 20 on page 52) and click
Apply. If the router displays a dialogue box that says
“Values are saved. Do you really want to reboot the system
now?” click OK. This will reboot the router and apply all
configuration changes.
NOTE: If the router does not prompt you to reboot it at the
end of the last configuration step, use the reboot
command. See Rebooting the Router on page 77.