Configuring the Network
NAT
Cisco SRP500 Series Services Ready Platforms Administration Guide (SRP520 Models)
68
5
Port Forwarding Settings
Field
Description
Port Forwarding
Type
Choose the type of port forwarding from the drop-down
list
Select
Single Port Forwarding
to forward traffic for a
specified port on to the same or an alternative port on
the target server in the LAN
.
Select
Port Range
Forwarding
to forward traffic to a range of ports to the
same ports on the target server in the LAN
.
Refer to the
Internet application’s documentation for the required
ports or ranges.
Application Name
For single port forwarding, choose a common
application from the drop-down list (such as Telnet, or
DNS).
To enter application that is not on the list, choose
Add a
new name
, and then enter the name of a new
application.
Enter a Name
For single port-forwarding, enter the name of the new
application.
Wan Interface Name
Select the WAN interface to which the traffic is initially
addressed.
External Port
For single port forwarding, enter the port number that
external clients will use to set up a connection with the
internal server.
Internal Port
For single port forwarding, enter the port number that
the SRP uses when forwarding traffic to the internal
server.
For simplicity, internal and external port numbers will
often be the same, however, different External port
numbers could be used to differentiate traffic of the
same application type intended for different internal
servers, or to promote privacy through the use of non-
standard ports.
Protocol
Select the protocol(s) to be forwarded: TCP, UDP or
Both.
