Find Your Public IP for Remote Desktop

Remote Desktop Protocol (RDP), SSH, and other remote access tools let you control a computer from anywhere in the world — but they all require one piece of information to connect: the public IP address of the machine you want to reach. Your public IP is different from the private IP address your computer uses on your local network, and understanding the difference is essential for setting up reliable remote access. This guide covers how to find your public IP, configure your network for remote connections, and secure the setup against common threats.

Why You Need Your Public IP for Remote Access

Every device on your local network has a private IP address — something like 192.168.1.100 or 10.0.0.50. These addresses only work within your network. When you want to connect from outside, you need the public IP address that your ISP assigns to your router. This is the address that identifies your entire network on the internet, and it is the address your remote desktop client uses to find you.

Think of your public IP as your home’s street address, and private IPs as room numbers inside the building. A visitor (remote connection) needs the street address to find the building, and then port forwarding tells the router which room to send them to.

Step 1: Find Your Public IP Address

Visit the MyIPHelp homepage from the computer you want to connect to remotely. Your public IP address is displayed instantly at the top of the page. This is the address assigned to your router by your ISP — all devices on your local network share this single public IP when communicating with the internet.

Write this address down or save it securely. You will enter it into your remote desktop client (Windows Remote Desktop, macOS Screen Sharing, or an SSH client) when connecting from another location.

You can also use the IP Lookup tool to examine your public IP in detail. The results show your ISP, approximate geographic location, and network information — which helps confirm you have the correct address before configuring remote access.

Step 2: Check If Your IP Is Static or Dynamic

Most residential ISPs assign dynamic public IP addresses that change periodically — sometimes daily, sometimes every few weeks, or whenever your router restarts. If your IP changes between remote sessions, your connection will break because the client will try to connect to an address that no longer belongs to you. This is one of the most common causes of “it worked yesterday but not today” remote access failures.

To check whether your IP is static or dynamic, visit MyIPHelp on different days and note whether the address changes. You can also call your ISP and ask, or check your router’s status page for the WAN IP lease duration.

If your IP is dynamic, you have two options:

• Dynamic DNS (DDNS) — services like No-IP, DuckDNS, or DynDNS give you a hostname (e.g., mycomputer.ddns.net) that automatically updates to point to your current IP whenever it changes. Many routers have built-in DDNS client support — check your router’s admin panel under the WAN or DDNS settings. This is the most common and reliable solution for home remote access with dynamic IPs.
• Request a static IP — some ISPs offer static IPs for an additional monthly fee. This guarantees your IP never changes, eliminating the need for DDNS. Business-class plans often include a static IP by default.

Step 3: Configure Port Forwarding

Your router blocks all incoming connections by default — this is called NAT (Network Address Translation), and it is a critical security feature. To allow remote desktop connections through, you need to create a port forwarding rule that tells your router to direct specific incoming traffic to your computer’s private IP address.

The ports you need to forward depend on the protocol you are using:

To set up port forwarding, log into your router’s admin panel (usually at 192.168.1.1 or 192.168.0.1 — check the label on your router for the exact address). Find the port forwarding section and create a rule that maps the external port to your computer’s private IP address and internal port.

After configuring port forwarding, verify that the port is actually reachable from the internet using the Port Checker tool. Enter your public IP and the port number. If it shows as closed, double-check your forwarding rule and ensure your computer’s firewall allows incoming connections on that port.

Step 4: Secure Your Remote Connection

Exposing remote access ports to the internet creates a significant attack surface. Automated bots constantly scan the internet for open RDP and SSH ports and attempt brute-force attacks. According to Shodan, millions of devices with exposed RDP ports are visible on the public internet at any time. Follow these security practices:

• Use non-default ports — change RDP from 3389 to a random high port number (between 10000 and 65535). This does not prevent targeted attacks but dramatically reduces exposure to automated scanners. According to the CISA advisory on RDP exploitation, exposed default RDP ports are among the most commonly exploited attack vectors for ransomware deployment.
• Enable Network Level Authentication (NLA) — on Windows, NLA requires authentication before a full RDP session is established, reducing the attack surface and preventing pre-authentication exploits.
• Use strong passwords and MFA — weak passwords are the primary attack vector for exposed remote access. Use a password manager and enable multi-factor authentication wherever supported.
• Use SSH keys instead of passwords — for SSH connections, disable password authentication entirely and use key-based authentication as recommended by OpenSSH. Key-based authentication makes brute-force attacks mathematically impossible because there is no password to guess.
• Consider a VPN instead — rather than exposing RDP or SSH directly, set up a VPN server on your network (using WireGuard or OpenVPN). Connect to the VPN first, then use remote desktop over the VPN tunnel. This hides your remote access ports from the public internet entirely. See the VPN verification guide for testing.
• Restrict source IPs — if you always connect from the same location (like your office), configure your router’s firewall to only allow incoming connections on the remote access port from that specific IP address. Use the Subnet Calculator to determine the correct CIDR block if needed.

Troubleshooting Connection Issues

If you cannot connect to your remote computer, work through these checks in order:

1. Verify your public IP has not changed — check the MyIPHelp homepage from the remote machine (or via DDNS). If the IP changed, update your client with the new address.
2. Check port accessibility — use the Port Checker to verify the port is open. If closed, the issue is at the router or firewall level.
3. Test local connectivity — try connecting using the private IP from within the same network. If this works, the problem is with port forwarding or the public IP, not the remote access software.
4. Check ISP restrictions — some ISPs block common remote access ports (particularly port 3389) or use Carrier-Grade NAT (CGNAT), which means multiple customers share a single public IP. You can identify CGNAT by checking if your router’s WAN IP (shown in the router admin panel) matches your public IP from the MyIPHelp homepage. If they differ, you are behind CGNAT. Contact your ISP to request a dedicated public IP or use a VPN-based solution instead.
5. Run a traceroute — use the Visual Traceroute tool to verify the network path between your current location and your remote computer’s IP.

Frequently Asked Questions