Iomega StorCenter px12-450r User Guide
156
Troubleshooting Routers
If you encounter a problem while connecting or using your px12-450r, check the topics listed below
for possible solutions.
If you have properly set port forwarding on your router and remote access still does not work, you
may have multiple routers on your network. In this situation, you will most likely have two NAT
(Network Address Translation) this situation you will most likely have two NAT (Network Address
Translation) firewalls.
1.
One of the easiest ways to identify this issue is to log in to the router to which the px12-450r is
connected.
2.
Once you have logged in, go to the page that shows the router's WAN IP address, usually Status
or Network Info.
3.
If the WAN IP address begins with 192.168, 10, or 172, you may have a NAT Firewall between
the router and internet connection.
There are several options for resolving double NAT situations. The sections below explore the pros
and cons of each resolution:
These instructions will refer to the router that is connected directly to the internet
as the Primary Router. The cascaded router or router to which your px12-450r is
connected is referred to as the Secondary Router.
Use the primary router's DMZ
Port forward the primary router to the secondary router
Put the secondary router in bridging mode
Put the primary router in bridging mode
Enabling the DMZ
Most routers have a feature called DMZ or Default Server. DMZ stands for Demilitarized Zone, Data
Management Zone, Demarcation Done, or Perimeter Network. The DMZ allows you to enter an IP
address that will exist outside the router's NAT Firewall.
This is the easiest way to configure your network to handle double NAT situations; however, it is
dependent upon DMZ functionality within your primary router.
To enable the DMZ:
1.
Log in to the primary router.
2.
Navigate to the settings page for DMZ or Default Server. Refer to the documentation that came
with your router for information on where this feature is found.
3.
Enter the secondary router's IP address.
4.
Save your settings.
Your secondary router is no longer behind your primary router's firewall. If port forwarding is
correctly configured, remote access should now be working properly. Moving your secondary router
into the DMZ should not have any effect on the security of the network, since it is still protected by
the secondary router's firewall.
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