Port Forwarding the ZyXEL Zywall70 Router for Defender SN500-4CH-002

What is Port Forwarding?

If you don't know what Port Forwarding is yet, you might want to start by reading our What is Port Forwarding guide.

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Home > Routers > ZyXEL > Zywall70 > Defender SN500-4CH-002

Before Forwarding a Port Setup a Static IP Address

To setup port forwarding on the ZyXEL Zywall70 router your device needs to have a static IP address. You should complete one of the following steps first:

Now that you have setup a Static IP Address on your device, please enter the IP address that you assigned to your device here:

Don't Skip This Step!

Login to the ZyXEL Zywall70 Router

Now we need to know your routers IP address. You can find it a variety of ways.

How To Find Your ZyXEL Zywall70 Router IP Address

It's ok if you don't know your ZyXEL Zywall70 router's internal IP address. You can find it by doing one of the following:

Login To The ZyXEL Zywall70 Router Using Your Web Browser

Open a web browser like Internet Explorer or Firefox. Enter the internal IP address of your router in the address bar of your browser.

ZyXEL Zywall70 Screenshot 0

In the picture above the address bar has http://www.google.com in it. Just replace all of that with the internal IP address of your ZyXEL Zywall70 router. By default the IP address should be set to

ZyXEL Zywall70 Screenshot 1

You should see a box prompting you for your ZyXEL Zywall70 password. Enter the password now.

The Default ZyXEL Zywall70 Router Password is: 1234

Click the Ok button to log in to your ZyXEL Zywall70 router.

Default Usernames and Passwords for other ZyXEL Routers

Please visit our Default ZyXEL Router Passwords page if the username and password shown below did not work for you.

If you can't login to your router because you forgot your ZyXEL Zywall70 router password, use our How to Reset a Router Password guide to set your ZyXEL Zywall70 router back to its factory settings.

How to Port Forward Defender SN500-4CH-002 on the ZyXEL Zywall70

Having trouble forwarding ports on the ZyXEL Zywall70?

If you are having trouble with this guide, then perhaps PFConfig may be your solution. PFConfig is a software tool that will automatically forward ports for your router to save you time and hassle.

ZyXEL Zywall70 Router Port Forwarding Screenshots

Now that you are logged in to your ZyXEL Zywall70 router you should see the following:

ZyXEL Zywall70 Screenshot 2

Click the SUA/NAT link near the left of the page.

ZyXEL Zywall70 Screenshot 3

Forward Ports 80 on the ZyXEL Zywall70

We will list a series of lines here that will show you exactly how to forward the ports you need to forward. Defender SN500-4CH-002 requires you to forward the following ports: 80. Go ahead and enter the settings shown above into the SUA Server Setup menu.

# Active Name Start Port End Port Server IP Address

When you're finished, click Apply near the bottom of the screen to save your changes.

And that's it! You're done!

Test if Your Ports are Open

Now that you have forwarded ports for Defender SN500-4CH-002 on the ZyXEL Zywall70 you should test to see if your ports are forwarded correctly.

To test if your port has been properly forwarded, you can use our Open Port Check tool. Our Open Port Check tool is the only online port checking tool with Guaranteed Results.

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