Port Forwarding; Dynamic Routing (Rip) - NetComm NB5580 User Manual

Block WAN Ping Response
Most Devices running TCP/IP protocols will respond to a Ping, this makes diagnosis of
Networking problems easier to fault find. However responding to a Ping request to your
Public (WAN) IP address makes you an easier target for hackers. The NB5580/W is set
to disregard a ping from the internet by default, if you need to enable this feature for
diagnosis of a problem please remember to Enable the Block again when testing is
complete.
DMZ Host
The DeMilitarized Zone Host setting is used to specify the IP address of a computer
(Host) that will deal with any data received from the internet that is not a response to an
internal computer's request (via NAT). This data would normally be 'dropped' by the
NB5580/W but if you wish to allow external access to a particular internal computer,
this option is used to 'expose' the 'Host' to raw connections from the internet.
The DMZ host feature is most commonly used to allow Internet users access to a Web
server or Game server.
Note: To secure your network you should ensure that the DMZ host feature is
disabled. If you need to use the DMZ host feature you should ensure the
computer with the IP address specified is secured with a secondary
software or hardware firewall.

Port Forwarding

This feature is similar to the DMZ host feature except it allows individual ports on the
public Internet IP address to be forwarded to a private IP address. This is most
commonly used to allow Internet users to access a Web service on port 80 etc.
To secure your NB5580/W you should not have port forwards that are not being used.
Any port forwards that have been configured should only specify the IP address of
secure computers.

Dynamic Routing (RIP)

RIP is disabled by default, you should only enable RIP if you want your NB5580/W to
accept routing information from other LAN routers or if you want it to share it's routing
information with other router's. As always the less information a 'Hacker' can find out
about your system the less chance the hacker has of finding an exploit for your system.
Ensure RIP is disabled if you do not need to use it.
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NP5580/W User Guide