Disconnecting an HP printer from the internet while keeping it on your local network is possible by modifying its network configuration. You can achieve this by accessing the printer’s embedded web server or control panel to disable wireless LAN features if you only need wired connectivity, or by using router-level firewall rules to block outbound traffic. This ensures the device remains responsive for local printing tasks without maintaining an active connection to external services.
Understanding Printer Network Modes
Before attempting to block internet access, it is crucial to understand how modern HP printers manage their connections. Most contemporary models are designed as IoT devices that require a stable internet connection for firmware updates, cloud printing services (like HP Smart), and security patches. However, the core function of printing relies entirely on local network protocols such as TCP/IP, Bonjour, or WSD. If your goal is to prevent the printer from phoning home or receiving unwanted updates, you do not necessarily need to disconnect it from the LAN entirely. Instead, you can isolate it. The most effective method depends on whether your printer supports direct Ethernet cabling or if it is strictly Wi-Fi based. For Ethernet-connected printers, the physical link to the router provides local communication, but the router itself handles all internet routing. Therefore, blocking internet access at the router level is often cleaner than trying to configure the printer directly, which may revert settings after a reboot or update. For users who prefer to keep the printer off Wi-Fi entirely to save power and reduce attack surfaces, switching to wired-only mode is the best approach. This removes the wireless radio from the equation, ensuring that the printer cannot connect to any network other than the one it is physically plugged into. If you wish to go further and ensure that even the wired connection has no internet access, you must rely on your network infrastructure rather than the printer's internal settings.Method 1: Disabling Wireless via Control Panel
If your HP printer uses Wi-Fi and you want to eliminate the wireless component entirely, you can disable the wireless LAN through the printer’s built-in interface. This step does not block internet access per se, but it removes the ability to connect wirelessly, forcing reliance on Ethernet if available. Navigate to the Setup menu on the printer’s touchscreen or control panel. Select Network Setup or Wireless Settings. Look for an option labeled Turn Off Wireless, Disable Wi-Fi, or Wi-Fi Direct. Confirm the action when prompted. The printer will restart its network module and cease broadcasting its SSID. Note that disabling wireless may also disable Bluetooth if your model couples these radios. Ensure you have an Ethernet cable connected to the printer before proceeding, as you will lose remote management capabilities via mobile apps that rely on local discovery over Wi-Fi. Once disabled, the printer will only be accessible via its IP address on the local wired network.Method 2: Router-Level Firewall Rules
The most robust way to block internet access for an HP printer while keeping it functional on the LAN is to configure your router. This method works regardless of whether the printer is on Wi-Fi or Ethernet. You will need to identify the printer’s MAC address or assign it a static IP address. Log in to your router’s administrative interface. This is typically done by entering the gateway IP address (such as192.168.1.1) into a web browser. Navigate to the Security, Firewall, or Access Control section. Some routers offer a feature called Parental Controls or Device Blocking, which allows you to select specific devices and restrict their internet access while allowing local LAN communication.
If your router lacks dedicated device blocking, look for MAC Filtering or Access Control Lists (ACLs). Create a rule that denies all outbound traffic (WAN access) for the printer’s MAC address but permits inbound traffic from the local subnet. This effectively isolates the printer from the internet. It prevents the printer from downloading updates or communicating with HP servers, while still allowing your computer to send print jobs to it via the local network.
This approach is superior to configuring the printer directly because many HP printers ignore strict firewall rules imposed by their own operating system, assuming they need internet access. By enforcing the block at the network edge, you maintain consistency across reboots and firmware updates.
Method 3: Using a Dedicated VLAN or Guest Network
For advanced users, creating a separate VLAN or using a guest network segment provides excellent isolation. Assign the printer to a guest network that has no routing access to the main LAN’s internet gateway. While this technically blocks internet, it may also complicate printing if your computers are on the main network and cannot see the guest network devices due to AP isolation. A better alternative within this framework is to use a secondary router behind your main modem, as described in our guide on How to setup a second router behind a different router without changing the operating mode. Connect the printer to this secondary router, which acts as a switch. Configure the secondary router to not pass traffic to the upstream modem. This creates a "dead end" network where the printer exists locally but has zero path to the internet. This hardware-based separation is foolproof. Even if the printer attempts to initiate a connection, the packet drops at the boundary of the secondary router. It requires no complex software configuration on the printer itself and protects your primary network from potential vulnerabilities in the printer’s firmware.Troubleshooting Local Connectivity
After implementing these changes, verify that printing still works. Add the printer to your computer using its local IP address rather than relying on automatic discovery if you have disabled mDNS/Bonjour. On Windows, go to Settings > Devices > Printers & Scanners and select Add a printer. Choose The printer that I want isn’t listed and enter the IP address manually. If you encounter issues, check your computer’s firewall settings. Sometimes, aggressive firewall rules on the PC can interfere with local printer communication. Ensure that the File and Printer Sharing exception is enabled in your OS firewall. Additionally, confirm that the printer and computer are on the same subnet mask. For more insights on general network stability, refer to our article on Set-up for Home Network: A Step-by-Step Guide to Networking and Wireless Connectivity, which covers foundational concepts for maintaining reliable local connections.Frequently Asked Questions
Will disabling internet access stop the printer from updating?
Yes, cutting off internet access prevents the printer from downloading firmware updates automatically. You will need to manually download updates from HP’s website on a computer with internet access and transfer them to the printer via USB or SD card if necessary.
Can I block internet access for just one device on my Wi-Fi?
Absolutely. Most modern routers allow you to create MAC address filtering rules or parental controls that target specific devices. You can set a rule to block WAN access for the printer’s MAC address while leaving other devices fully connected.
Does blocking internet affect cloud printing features like HP Smart?
Yes, cloud-based features will cease to function. You will only be able to print from devices directly connected to the same local network. Mobile apps that rely on remote access or cloud relay will fail to connect unless configured for local-only mode.
Is it safe to leave an unpatched printer on my network?
While blocking internet reduces exposure to remote exploits, it does not eliminate risks from local threats. An infected computer on your LAN could potentially exploit vulnerabilities in the printer’s firmware. Regularly checking for manual updates when you have temporary internet access is recommended.
What happens if I forget the printer’s IP address?
If you cannot remember the IP address, you can usually find it by printing a network configuration report from the printer’s control panel under Reports > Network Summary. Alternatively, check your router’s DHCP client list to see which IP was assigned to the printer’s MAC address.