What Is the SSH Port of the NVR and How to Access It Safely

The default SSH port for most NVRs is 22, the standard port for secure shell access used to manage network devices. Accessing your NVR via SSH allows advanced configuration and troubleshooting, but requires proper authentication and network precautions to prevent unauthorized entry. Always verify your NVR manufacturer’s specifications, as some models may use custom ports or disable SSH by default for security.

Key Takeaways

• Default SSH port: Most NVRs use port 22 for SSH access by default.
• Check manuals: Always verify the SSH port in your NVR’s documentation or settings.
• Change defaults: Reduce exposure by switching to a non-standard SSH port.
• Secure connections: Use SSH keys instead of passwords for stronger authentication.
• Firewall rules: Restrict SSH access to trusted IPs via network firewall settings.
• Disable when unused: Turn off SSH if remote access isn’t required for safety.

What Is the SSH Port of the NVR and Why It Matters

Imagine you’re setting up a new NVR (Network Video Recorder) for your home or business security system. You’ve got the cameras mounted, the cables run, and the system powered on. But then you hit a snag: you need to access the NVR’s backend for advanced configuration—maybe to tweak storage settings, enable remote access, or troubleshoot a network issue. That’s when SSH (Secure Shell) comes into play. SSH is like a secret backdoor that lets you securely connect to your NVR’s command line, giving you far more control than the standard web interface.

But here’s the catch: SSH isn’t always enabled by default, and even when it is, you need to know the correct SSH port to use. This is where many users get stuck. Whether you’re a tech-savvy homeowner, a small business owner managing security, or an IT pro supporting clients, knowing how to access the SSH port of your NVR safely is crucial. It’s not just about getting in—it’s about doing so without exposing your system to hackers, malware, or accidental misconfigurations. In this guide, we’ll walk through everything you need to know, from finding the default SSH port to securing your connection and avoiding common pitfalls.

Understanding the SSH Port of Your NVR

What Is SSH, and Why Does It Use a Port?

SSH, or Secure Shell, is a cryptographic network protocol used to securely access and manage devices over an unsecured network—like the internet or your local Wi-Fi. Think of it as a secure phone line between your computer and your NVR. Instead of sending plain text (like older protocols such as Telnet), SSH encrypts every bit of data, keeping your login credentials and commands safe from eavesdroppers.

Every network service—like web servers, email, or SSH—uses a specific port number to identify itself. Ports are like numbered doors on a building: each one leads to a different service. For SSH, the default port is 22. This is the standard used by most Linux-based systems, which many NVRs run under the hood. So, when you connect via SSH, your client (like PuTTY or Terminal) sends a request to port 22 on the NVR’s IP address, asking to start a secure session.

Why NVRs Use SSH (And When You Might Need It)

Most NVRs come with a user-friendly web interface for everyday tasks: viewing camera feeds, setting recording schedules, and managing users. But sometimes, you need deeper access. Here are a few real-world scenarios where SSH becomes invaluable:

• Troubleshooting connectivity issues: If your NVR isn’t responding on the web, SSH can help you check network settings or restart services.
• Advanced configuration: Want to set up custom scripts, modify firewall rules, or adjust system logs? SSH gives you root-level access.
• Firmware recovery: In rare cases, a failed update might leave your NVR unresponsive. SSH can help you restore or reflash firmware.
• Automation and integration: Developers or power users can use SSH to automate backups, integrate with home automation systems, or pull logs for analysis.

For example, a friend of mine once had an NVR that kept dropping its connection to the cloud. The web interface offered no clues. Using SSH, we logged in, ran a few network diagnostic commands, and discovered a DNS issue. Fixing it took five minutes—but without SSH, he might have replaced the entire unit.

Is SSH Always Enabled on NVRs?

Here’s a key point: SSH is often disabled by default on consumer and even some professional-grade NVRs. Manufacturers do this for security reasons—leaving SSH open is like leaving your front door unlocked. However, many NVRs allow you to enable SSH through their web interface, usually under “System,” “Maintenance,” or “Remote Access” settings.

Some brands (like Hikvision, Dahua, or Synology) may even require a special activation key or a physical button press to unlock SSH. Always check your NVR’s user manual or support site before assuming it’s available. And never assume SSH is on—always verify.

Finding the Default SSH Port for Your NVR

Standard SSH Port: 22 (But Not Always!)

As mentioned earlier, the default SSH port is 22. Most Linux-based NVRs use this unless explicitly changed. So, if you’re trying to connect via SSH and you’re unsure of the port, start with 22. It’s the most common, and it’s the first thing most security tools check.

But—and this is a big but—some manufacturers change the default port to reduce the risk of automated attacks. Why? Because bots constantly scan the internet for devices with port 22 open. By switching to a non-standard port (like 2222 or 2200), they make it harder for these bots to find SSH services. It’s not foolproof, but it helps.

How to Find Your NVR’s SSH Port

So how do you find out which port your NVR uses? Here are a few reliable methods:

• Check the user manual or product specs: Most manufacturers list SSH settings in the “Advanced” or “Network” sections. For example, Hikvision NVRs often use port 22 by default but allow customization.
• Look in the NVR’s web interface: Navigate to System > Network > Advanced or Maintenance > Remote Access. You might see an SSH toggle with a port number field. Even if SSH is off, the port is usually displayed.
• Use a port scanner: Tools like Nmap (free and open-source) let you scan your local network for open ports. Run nmap -p 20-25 192.168.1.100 (replace the IP with your NVR’s address) to check ports 20 to 25. If port 22 is open, it will show up. You can also scan a wider range (e.g., 22, 2222, 2200) to catch custom ports.
• Contact support: If you’re still unsure, reach out to the manufacturer. Provide your NVR’s model number and firmware version—they can tell you the exact SSH port and whether it’s supported.

Pro tip: If you’re using a mobile app (like Hik-Connect or Dahua DMSS) to manage your NVR, check its settings too. Some apps have an “Advanced” or “Developer” mode that reveals SSH details.

Common NVR Brands and Their SSH Ports

While port 22 is the norm, here are a few real-world examples to guide you:

• Hikvision: Usually port 22, but can be changed in the web interface. Some older models require a special “SSH unlock” tool.
• Dahua: Default is 22, but often disabled. You may need to generate an SSH key via their “Dahua Tool” software.
• Synology Surveillance Station: Uses port 22, but SSH must be enabled in the main Synology DSM (DiskStation Manager) settings.
• Uniview: Typically port 22, but check the “System Maintenance” section for SSH activation.
• Reolink: Most models do not support SSH. Reolink focuses on user-friendliness and avoids exposing command-line access.

Remember: these are general guidelines. Always verify with your specific model and firmware version. A firmware update could change SSH behavior.

How to Access the SSH Port of Your NVR (Step-by-Step)

Step 1: Enable SSH on the NVR

Before you can connect, SSH must be turned on. Here’s how to do it on most NVRs:

1. Log in to your NVR’s web interface (usually via a browser at http://[NVR-IP]).
2. Navigate to System > Maintenance > Remote Access or Network > Advanced Settings.
3. Look for an “SSH” or “Command Line Access” toggle. Turn it ON.
4. Note the port number (usually 22, but could be different).
5. Click “Apply” or “Save.” The NVR may restart or apply changes in the background.

Example: On a Hikvision DS-7608NI-K2 NVR, go to Configuration > System > Security > Advanced Security, then check “Enable SSH.” The port is displayed right below the toggle.

Step 2: Find Your NVR’s IP Address

You need to know where to connect. Here’s how to find the NVR’s IP:

• From the NVR’s screen: If it has a monitor, check Main Menu > System Info > Network.
• From your router: Log in to your router (e.g., 192.168.1.1), go to “Connected Devices” or “DHCP Clients,” and look for your NVR by name or MAC address.
• From a network scanner app: Use Fing (iOS/Android) or Advanced IP Scanner (Windows) to list all devices on your network.

Step 3: Connect Using an SSH Client

Now, it’s time to connect. Here are the most common tools:

• Windows: Use PuTTY (free, user-friendly) or Windows Terminal (built-in, requires SSH enabled in Settings > Apps > Optional Features).
• Mac/Linux: Open Terminal and run ssh username@NVR-IP -p [port]. Replace username with your NVR login (often “admin”), NVR-IP with the address, and [port] with the SSH port (e.g., 22).

Example command (Mac/Linux):
ssh admin@192.168.1.100 -p 22

For PuTTY:
Open PuTTY, enter the NVR’s IP in “Host Name,” set “Port” to 22 (or your custom port), choose “SSH” as the connection type, then click “Open.” Enter your username and password when prompted.

Step 4: Log In and Navigate

Once connected, you’ll see a command prompt. The exact layout depends on the NVR’s OS. Most use a Linux shell (like Bash). You can now run commands to:

• Check system status: top or htop
• View disk usage: df -h
• Restart services: systemctl restart nginx (or similar)
• Check logs: tail -f /var/log/messages

Caution: Be careful with commands. A typo can cause system issues. When in doubt, search for the correct syntax or ask a professional.

Step 5: Disconnect and Secure the Session

When done, type exit to close the connection. Always disconnect properly—don’t just close the window, as this can leave sessions hanging.

After use, disable SSH in the NVR’s web interface unless you need it regularly. Leaving it open increases your attack surface.

Securing Your SSH Access to Prevent Risks

Why Security Matters

SSH is powerful, but it’s also a target. If left exposed, it can be exploited by:

• Brute-force attacks: Bots try thousands of username/password combinations.
• Exploits: Vulnerabilities in the SSH daemon (like OpenSSH) can let hackers gain full control.
• Misconfigurations: A typo in a command could delete files or disable the NVR.

One client of mine once left SSH open on his business NVR. A week later, he found all his camera feeds replaced with a ransom note. The attacker had used a default password and port 22 to take over the system.

Best Practices for Safe SSH Access

Here’s how to protect your NVR:

• Change the default SSH port: Use a high-numbered port (e.g., 22222) to avoid automated scans. In the NVR’s SSH settings, change it from 22 to something obscure.
• Use strong passwords: Avoid “admin123” or “123456.” Use a mix of letters, numbers, and symbols. Better yet, use a password manager.
• Enable two-factor authentication (2FA): If your NVR supports it, require a code from Google Authenticator or SMS. This adds a second layer of security.
• Restrict IP access: If possible, limit SSH to specific IP addresses (e.g., only from your home network). This is called “IP whitelisting.”
• Use key-based authentication: Instead of passwords, use SSH keys. Generate a public/private key pair on your computer, then add the public key to the NVR. This is more secure and harder to crack.
• Keep firmware updated: Manufacturers patch SSH vulnerabilities in updates. Check for new firmware monthly.
• Monitor logs: Regularly check SSH access logs for failed login attempts. If you see repeated failures, it could mean someone is trying to break in.

Example: To set up SSH keys on a Linux-based NVR, generate a key with ssh-keygen -t rsa, then copy the public key to the NVR using ssh-copy-id admin@NVR-IP -p 2222. After that, disable password login for extra security.

When to Avoid SSH Altogether

SSH isn’t for everyone. If you’re not comfortable with command lines or don’t need advanced features, stick to the web interface. It’s safer and simpler. Only enable SSH when you have a specific task—and disable it when done.

Common Issues and Troubleshooting Tips

Can’t Connect to the SSH Port? Try These Fixes

• Connection refused: The port might be closed. Verify SSH is enabled and the port number is correct. Check the NVR’s firewall settings.
• Timeout: The NVR might not be on the same network. Confirm its IP address and ensure your computer can ping it.
• Authentication failed: Double-check the username and password. Some NVRs require the full admin login (not a user account).
• Permission denied (public key): If using keys, ensure the public key is in the correct location (usually /root/.ssh/authorized_keys).

What If SSH Is Blocked by the Manufacturer?

Some NVRs (like Reolink or certain budget brands) block SSH entirely. If you need advanced access, consider:

• Upgrading to a pro model that supports SSH.
• Using a third-party NVR software (like Blue Iris or Milestone) that runs on a PC and offers full control.
• Contacting the manufacturer for a firmware unlock (some offer this for enterprise customers).

Data Table: Common NVR SSH Settings

Brand	Default SSH Port	SSH Enabled by Default?	Notes
Hikvision	22	No	Enable via web interface; some models need unlock tool
Dahua	22	No	Requires Dahua Tool for key generation
Synology	22	No	Enable in DSM > Terminal & SNMP
Uniview	22	No	Enable in System Maintenance > Remote Access
Reolink	N/A	No	SSH not supported on most models

Final Thoughts: Use SSH Wisely and Safely

Accessing the SSH port of your NVR can feel like unlocking a hidden superpower. It gives you control that most users never experience—but with great power comes great responsibility. The SSH port (usually 22, but sometimes customized) is your gateway to advanced troubleshooting, automation, and deeper security management. But if misused, it can also expose your entire surveillance system to risk.

Remember the key takeaways: always verify the port, enable SSH only when needed, use strong authentication, and disable it when you’re done. Treat SSH like a sharp tool—useful in the right hands, dangerous in the wrong ones. And if you’re ever unsure, don’t guess. Consult your manual, reach out to support, or ask a trusted IT professional.

At the end of the day, your NVR is part of your security ecosystem. Whether it’s protecting your home, your business, or your peace of mind, every decision—like how you handle SSH—matters. So go ahead, dive in, explore, and learn. But do it wisely, safely, and with respect for the power you now hold.

Frequently Asked Questions

What is the default SSH port of the NVR?

The default SSH port for most Network Video Recorders (NVRs) is 22, the standard port for SSH connections. However, some manufacturers may use a custom SSH port for NVR devices, so always check your model’s documentation. Changing this port is a common security practice to reduce brute-force attacks.

How do I find the SSH port of my NVR if it’s not default?

To locate your NVR’s SSH port, access its web interface or mobile app and navigate to Network Settings or Advanced Settings. If unsure, consult the manufacturer’s manual or support site—search for “SSH port NVR [your model].” Some NVRs also display this info in their system logs.

Is it safe to enable SSH access on my NVR?

Enabling SSH on your NVR can be safe if done correctly: always use strong passwords, disable root login, and change the default SSH port. Avoid exposing the NVR directly to the internet—use a VPN or firewall to restrict access to trusted IPs only.

Can I change the SSH port of my NVR for better security?

Yes, you can (and should) change the SSH port of your NVR to enhance security. Access the NVR’s settings via SSH or web interface, locate the SSH port configuration, and set a non-standard port (e.g., 2222). After changing, update any scripts or tools using the old port.

Why can’t I connect to the SSH port of my NVR?

Connection failures to your NVR’s SSH port may stem from firewall rules, incorrect port settings, or disabled SSH service. Verify the port number, check firewall/NVR security settings, and ensure SSH is enabled. Test connectivity using telnet [NVR_IP] [port] from your local network.

What tools can I use to access the SSH port of my NVR?

Popular tools to access your NVR’s SSH port include PuTTY (Windows), Terminal (macOS/Linux), or mobile apps like JuiceSSH. For automation, use OpenSSH or scripting tools like Python’s Paramiko. Always verify your NVR’s SSH compatibility before connecting.