These screenshots were submitted by our users.
If you would like to share screenshots for us to use, please use our Router Screenshot Grabber, which is a free tool in Network Utilities. It makes the capture process easy and sends the screenshots to us automatically.
Use a VPN Instead
Have you considered using a VPN instead of forwarding a port? For most users, a VPN is a much simpler and more secure choice than forwarding a port.
We use and recommend NordVPN because not only is it the fastest VPN, it includes a new feature called Meshnet that makes forwarding a port no longer necessary for most applications. With NordVPN Meshnet, you can connect to your devices from anywhere in the world, completely secure, over a highly encrypted VPN tunnel.
When shopping for a VPN, make sure that they meet the following criteria:
- Your VPN provider should have a no-logs policy. This means that they do not keep any logs of any kind.
- Make sure that your VPN provider has lots of exit nodes all around the world.
- Check that your VPN will not affect your speed.
- Verify that your VPN provider uses WireGuard as the underlying protocol.
- Many people prefer a VPN provider that is not based in the United States.
This is the list of requirements that we used when we were shopping around for a VPN provider. There are lots of free, shady VPN providers out there that we looked at and dismissed.
Based in Panama, using diskless servers, and with over 6,100 servers in 61 countries, we can safely say that NordVPN satisfies all of these requirements.

Once you've set up your NordVPN account on multiple computers and enabled Meshnet, you can seamlessly access all of your devices as if they were on the same network. You don't even have to log in to your router. It's very simple.
Every time you click on one of our affiliate links, such as NordVPN, we get a little kickback for introducing you to the service. Think of us as your VPN wingman.
This is the screenshots guide for the Cisco DPC3939 XFINITY. We also have the following guides for the same router:
- Cisco DPC3939 XFINITY - How to change the IP Address on a Cisco DPC3939 XFINITY router
- Cisco DPC3939 XFINITY - Cisco DPC3939 XFINITY Login Instructions
- Cisco DPC3939 XFINITY - Cisco DPC3939 XFINITY User Manual
- Cisco DPC3939 XFINITY - Setup WiFi on the Cisco DPC3939 XFINITY
- Cisco DPC3939 XFINITY - How to Reset the Cisco DPC3939 XFINITY
- Cisco DPC3939 XFINITY - Information About the Cisco DPC3939 XFINITY Router
All Cisco DPC3939 XFINITY Screenshots
All screenshots below were captured from a Cisco DPC3939 XFINITY router.
Cisco DPC3939 XFINITY Status Screenshot

Cisco DPC3939 XFINITY Status Screenshot

Cisco DPC3939 XFINITY Wifi Status Screenshot

Cisco DPC3939 XFINITY General Screenshot

Cisco DPC3939 XFINITY Firmware Screenshot

Cisco DPC3939 XFINITY Backup Screenshot

Cisco DPC3939 XFINITY Remote Management Screenshot

Cisco DPC3939 XFINITY Port Triggering Screenshot

Cisco DPC3939 XFINITY Port Forwarding Screenshot

Cisco DPC3939 XFINITY Port Forwarding Screenshot

Cisco DPC3939 XFINITY Diagnostics Screenshot

Cisco DPC3939 XFINITY Log Screenshot

Cisco DPC3939 XFINITY Login Screenshot

Cisco DPC3939 XFINITY Lan Screenshot

Cisco DPC3939 XFINITY Lan Status Screenshot

Cisco DPC3939 XFINITY Setup Screenshot

Cisco DPC3939 XFINITY Ipv6 Screenshot

Cisco DPC3939 XFINITY Firewall Screenshot

Cisco DPC3939 XFINITY Dmz Screenshot

Cisco DPC3939 XFINITY Upnp Screenshot

Cisco DPC3939 XFINITY Status Screenshot

Cisco DPC3939 XFINITY Attached Devices Screenshot

Cisco DPC3939 XFINITY Password Screenshot

Cisco DPC3939 XFINITY Status Screenshot

Cisco DPC3939 XFINITY Status Screenshot

Cisco DPC3939 XFINITY Device Image Screenshot

Cisco DPC3939 XFINITY Wifi Security Screenshot

Cisco DPC3939 XFINITY Reset Screenshot

This is the screenshots guide for the Cisco DPC3939 XFINITY. We also have the following guides for the same router:
- Cisco DPC3939 XFINITY - How to change the IP Address on a Cisco DPC3939 XFINITY router
- Cisco DPC3939 XFINITY - Cisco DPC3939 XFINITY Login Instructions
- Cisco DPC3939 XFINITY - Cisco DPC3939 XFINITY User Manual
- Cisco DPC3939 XFINITY - Setup WiFi on the Cisco DPC3939 XFINITY
- Cisco DPC3939 XFINITY - How to Reset the Cisco DPC3939 XFINITY
- Cisco DPC3939 XFINITY - Information About the Cisco DPC3939 XFINITY Router