ASUS AC1900 Port Forwarding: How To Improve Router’s Performance 

Did you know port forwarding can make your internet work better? It’s a useful tool that can improve gaming, make remote access easier, and help apps run smoothly. This guide will show you how to set up ASUS AC1900 port forwarding, even if you are behind CGNAT. 

What is Port Forwarding?

Port forwarding is a technique that opens doors for specific internet data to reach the right device or app on your network. 

It helps external devices connect easily to your network services and is useful for online gaming, hosting servers, watching videos, and using remote access tools.

Things To Prepare Before ASUS AC1900 Port Forwarding

Before you start, gather the following information:

1. Router’s IP Address: 

You can find it on the back of the router or in the manual (commonly 192.168.1.1).

2. Device’s IP Address: 

Search for the local IP address of the device you want to forward traffic to.

3. Port Numbers: 

These are specific ports required for the application or service (e.g., 80, 443, or 22).

4. Login Credentials: 

Your ASUS router’s admin username and password.

5. Ensure you’re connected to the router via Wi-Fi or Ethernet for smooth configuration.

What are the Necessary Ports to Forward for ASUS AC1900?

The ports you need to forward depend on the application or service you’re using. Here are some common ones:

• HTTP: Port 80 (for web servers)
• HTTPS: Port 443 (for secure websites)
• FTP: Port 21 (for file transfers)
• Gaming: Varies by game (e.g., 3074 for Xbox Live)
• SSH: Port 22 (for secure shell access)

Always check the official documentation of your application or service for specific port requirements.

How to Configure ASUS AC1900 Port Forwarding Manually

Follow these steps to set up port forwarding on your ASUS AC1900 router:

1. Open a browser and enter your router’s IP address (e.g., 192.168.1.1).
2. Enter your admin username and password.
3. Go to the WAN tab in the left menu.
4. Select Virtual Server / Port Forwarding from the options.
5. Add a New Port Forwarding Rule.
6. Click the Add Profile button.
7. Enter a name for the rule (e.g., “Gaming PC”).
8. Input the Local IP of the device (e.g., 192.168.1.100).
9. Specify the Port Range (e.g., 80-80 for a single port or 1000-2000 for a range).
10. Choose the Protocol (TCP, UDP, or BOTH).
11. Click Apply to save the rule.

You can use online tools or apps to check if the port is open. Ensure the application is working as intended.

Can You Enable Ports if Your ISP Uses CGNAT?

Unfortunately, no. You can’t port forward if your ISP uses CGNAT.

Why Does Your ISP Use CGNAT?

ISPs use CGNAT to conserve IPv4 addresses. By allowing multiple customers to share a single public IP address, CGNAT helps ISPs accommodate a larger number of subscribers without needing to acquire additional IPv4 addresses.  

How to Overcome CGNAT and Open Ports Easily

CGNAT can restrict your ability to open ports on your router. You can not access numerous applications that depend on open ports for proper functionality. PureVPN's port forwarding add-on offers a viable solution by effectively bypassing CGNAT. It empowers you to open ports behind your router without the concern of IP blacklisting, granting access to a wide range of applications that need open ports for seamless access.

Steps to Open Ports on Routers Behind CGNAT

1. Open the Members area and log in.
2. Go to Subscriptions and click Configure next to Port Forwarding.
3. Click Enable specific ports and choose the ports you want to open.
4. Save your settings and connect to the VPN.
5. Your desired ports should now be open, bypassing CGNAT restrictions!

NAT devices are used in series, causing issues with some internet services. NAT is typically used in home networks, CGNAT operates at the ISP-level, and Double NAT occurs due to specific network setups.

Wrapping Up

Setting up port forwarding on your ASUS AC1900 router can make your network work better for gaming, streaming, and remote access. If you face problems with CGNAT, use PureVPN's port forwarding add-on and a dedicated IP to get smooth access to high-paced network needs.