Open Ports on Your Router for Synology CS-406e

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Port Forward Staff
July 22, 2021 (Last Updated: ) | Reading Time: 2 minutes

When you use a Synology CS-406e device you may need to forward ports in your router. By forwarding ports you allow connection requests coming from the internet to be directed to a Synology CS-406e device.

By default routers do not allow incoming network requests. Forwarding ports can work around this limitation.

Before Forwarding a Port

You need to know the following things before you can forward a port:

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:

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.

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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.

How to Locate Your Router's IP Address

We have free Router Detector software to help you find your router's IP address. It is part of our Network Utilities suite of tools and is free for you to use it.

We have a guide you can follow Find Your Router IP Address if you don't want to run the software.

Setting Up a Port Forward for a Synology CS-406e device

We have Network Utilities software that can forward ports for you. Our Network Utilities software allows you to add port forwards and also remove them when you no longer need them to maximize your network security.

Another option is to go through the process of forwarding ports one step at a time. The process for forwarding a port is:

Frequently you have to reboot your router for the changes to take effect.

You can choose your router from our list to see exactly how to forward ports for a Synology CS-406e device:

List of Routers - Customized for Synology CS-406e

Forwarding Ports for a Synology CS-406e device

The ports that need to be forwarded for a Synology CS-406e device are listed here:

Synology CS-406e - PC

  • TCP: 20-22, 25, 80, 110-111, 137-139, 143, 443, 445, 548, 873, 892, 993, 995, 2049, 3260, 4672, 5000-5001, 5005-5006, 5432, 6881-6999, 7000-7001, 9997-9999, 55536-55663, 55736-55863
  • UDP: 25, 110-111, 137-139, 143, 445, 892, 993, 995, 2049, 4662, 4672, 5432, 6881-6999, 9997-9999

Those are the steps for forwarding ports in your router for a Synology CS-406e device.

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