The most secure way to keep your printer segregated from your other Wi-Fi devices is to put the printer on a separate network or VLAN and only allow trusted computers to communicate with it. Home users may set up an IoT or guest network to provide some basic isolation, while businesses can create VLANs and firewall rules for tighter control. You can also disable unused printer features, secure Wi-Fi Direct, and keep the printer firmware up to date.
A printer isolated to a network can still receive print jobs from approved devices, but other phones, computers, smart devices, or visitors on the main network have less direct access to the printer.
Why would you want to isolate a printer from other devices on WiFi?
As a network-connected device, a printer has the ability to communicate with other devices when they are on the same network. Isolation minimises unnecessary access. It also limits what someone can access if another device on the network is compromised.
This is especially helpful for home offices, small businesses, clinics and workplaces that may deal with documents containing personal, financial or business information.
HP also recommends users use a secured network instead of leaving a printer open on an open network.
How do you isolate a printer from other devices on wifi?
The easiest way to do it is to connect the printer to another Wi-Fi network, like an IoT network, and then set the router so that normal devices can’t freely talk to that network.
Follow the steps:
What is a guest network, and how do you set one up for the printer?
Log into your router.
Log into the router’s settings page/app and look for Guest Network, IoT Network, VLAN, or Network Segmentation.
Make a new network.
For example, change the printer network to Office-Printer or Printer-IoT. WPA2 or WPA3 security with a strong password.
Connect the printer to the new network
Go to the wireless settings of the printer and select the new network. Type in the Wi-Fi password and wait for the printer to reconnect.
Only connect authorised equipment.
Depending on your router, PCs that need to print may need firewall rules to communicate with the printer network.
Test print and scan.
Print using an approved computer. Test with a device that should not have access.
The names of the menu options vary between router and printer, so check the manufacturer’s instructions before you attempt to change advanced network settings.
Can I isolate a printer on a guest network?
A guest network is a good way to keep visitors away from your main network, but it’s not always the right choice for printer isolation. Many routers intentionally block guest devices from talking to other devices. This can also block printing.
For example, HP says that guest and public networks can prevent devices from communicating with wireless printers. HP recommends Wi-Fi Direct or a USB connection in those cases.
A better option than a traditional guest network is a dedicated IoT network on your router with LAN access.
How does a VLAN provide stronger printer isolation?
A VLAN places the printer into a logically separate network while allowing the router or firewall to control exactly what can communicate with it.
For example:
| Network | Devices | Access |
| Main LAN | Office computers | Can print |
| Printer VLAN | Network printers | Restricted |
| Guest Wi-Fi | Visitors’ phones/laptops | No printer access |
| IoT VLAN | Smart devices | Restricted |
A firewall rule can allow printing traffic from approved computers to the printer while blocking unnecessary connections from other networks.
This setup is more suitable for businesses than a basic guest network because you can control communication instead of simply separating devices.
What printer settings should you change for better isolation?
Network segmentation works best when paired with secure printer settings. Start by changing the default administrator credentials, installing firmware updates and disabling features you don’t use.
Look for settings such as:
- Remote management
- Wi-Fi Direct
- WPS Wireless Direct
- Cloud printing, FTP, or other dormant network services
- Unnecessary remote access.
The options available depend on the printer model.
For example, HP’s documentation describes an Embedded Web Server that can be accessed by the printer’s IP address to manage network and security settings.
How do I secure Wi-Fi Direct on a printer?
Wi-Fi Direct establishes a direct wireless connection between a device and the printer without the use of the regular Wi-Fi router. This can be useful if you are unable to print normally due to network isolation.
But it should not be left open longer than necessary.
On supported HP printers, users can configure Wi-Fi Direct with a password and select a manual connection method. HP recommends that you turn off Wi-Fi Direct when it is not in use and to avoid automatic connection methods when possible.
A practical approach is to turn Wi-Fi Direct on only when you really need it, and use a strong password.
What to do if the isolated printer stops working?
The first thing is to see if the computer and printer can actually talk to each other across the networks.
If one computer can print and the other can’t, the problem may not be the printer. The router’s isolation or firewall rules could be blocking the traffic you need.
Look at this stuff:
- Make sure that the printer is connected to the right Wi-Fi.
- Verify the printer’s IP address.
- Make sure that the computer is allowed to access the printer network.
- Verify whether the router is blocking device-to-device communication.
- Re-add the printer if the printer’s IP address has changed.
- Test print on an approved device.
For network printers, the printer’s IP address is usually available on the printer’s network configuration page or printer settings.
When Should You Not Isolate the Printer?
Printer isolation may not always be needed for a simple home setup. Basic network security may be enough if you’re safe in a trusted private network with a strong Wi-Fi password and updated devices.
If you don’t understand them, don’t write complex VLAN/firewall rules. Incorrect rules can block printing, scanning, printer discovery, or access to printer management tools.
However, for a small business, isolation is more useful when the network has guest devices, employee devices, smart devices or sensitive systems.
What are the easiest secure printer settings?
A good setup for the average home user is a private Wi-Fi network with security, updated printer firmware, a strong password for the administrator, and deactivated features that are not required.
If you are talking about a small office, you get better separation by putting printers on a dedicated IoT or printer VLAN and only allowing access to the required devices. If you do not need to print directly, you can disable Wi-Fi Direct.
The point isn’t simply to conceal the printer. This is to control which devices can communicate with it and which printer services they can use.
What are common mistakes when isolating a printer?
One common mistake is putting the printer on a guest network and expecting it to work as usual. Guest-network isolation can prevent computers from finding or talking to the printer.
Another mistake is setting up a separate printer network, but failing to create a proper firewall rule for authorised computers. The printer may show offline even when it is correctly connected.
Finally, don’t confuse network isolation with basic security. Update the printer firmware regularly and secure the administration interface.
Bios Technologies can help you secure your printer and network in a number of ways.
A printer that is properly isolated should still be functional, but it will reduce unnecessary access from other devices. The right configuration depends on your router, printer model, number of users, and whether the network is for a home, office, or business environment.
Bios Technologies can help with printer setup, network setup, device connectivity, troubleshooting, and real-world security improvements. If you’re not sure how to isolate your printer without breaking printing or scanning, professional help can help you get the network configured correctly.
For more practical printer, computer, and technology insights, Bios Technologies is a trusted partner in reliable technology guidance and support.
