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Apple AirPrint Issue - Unable To See LAN Printer From iPhones or iPads

10/14/2021 265 People found this article helpful 201,946 Views

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    Description

    This article will guide you through the following 4 steps to troubleshoot issues with Apple AirPrint.

    Step 1: Enable Multicast under firewall settings.
    Step 2: Enable Multicast on LAN, WLAN interfaces.
    Step 3: Enable firewall access rules from LAN to Multicast zones.
    Step 4: Create 2 IP helper policies for NetBIOS from WLAN to LAN and for mDNS from LAN to WLAN subnets and vice versa.

    See Also:

    Configure IP Multicast
    Configure IP Helper Policies

    Resolution


    Resolution for SonicOS 7.X

    This release includes significant user interface changes and many new features that are different from the SonicOS 6.5 and earlier firmware. The below resolution is for customers using SonicOS 7.X firmware.






    Step 1: Enable Multicast under firewall settings.

    • Click Network in the top navigation menu.
    • Navigate to System| Mulitcast and click on the box "Enable Mulitcast" 

          Image


    • Under the " Multicast Policies" Select the option "Enable reception of all Multicast addresses"
    • Click on "ACCEPT" at the bottom

    Step 2: Enable Multicast on LAN, WLAN interfaces.

    • Navigate to Network | System | Interfaces and edit the LAN interface
    • On the interface, click on Advanced and select the option "Enable Mulitcast Support"
    • Click on OK
    • Follow the same steps listed above for the WLAN zone or interface

               Image

    Step 3 Enable firewall access rules from LAN to Multicast zones.

    • Navigate to Policy| Rules and Policies | Access Rules
    • Choose LAN to Mulitcast as shown in the GUI.

      Image

    • There should be Auto-Added Rules. If there are none, then add the rules as shown in the GUI

      Image


    Step 4: Create 2 IP helper policies for NetBIOS from WLAN to LAN and for mDNS from LAN to WLAN subnets and vice versa.

    • Navigate to Network | System | IP Helper and click on "Enable IP Helper"
    • Click on Accept at the bottom.

      Image

    • Enable NetBIOS and mDNS under Relay Protocols

      Image

    • Click on Policies and add the IP helper policy.
    • Enter the following
      • Protocol : mDNS
      • From : Interface X0
      • To: WLAN Subnets
      • Comment: *if Required*

        Image
    • Follow the same steps listed above to create a new policy and configure from "WLAN Interface" to the "LAN subnets"

    How to Test:

    Search for LAN printer through AirPrint and print a test page.

    See Also:

    Configure IP Multicast
    Configure IP Helper Policies

    Resolution for SonicOS 6.5

    This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware. The below resolution is for customers using SonicOS 6.5 firmware.





    Step 1: Enable Multicast under firewall settings.

      • Click Manage in the top navigation menu.
      • Navigate to Security Configuration | Firewall Settings | Mulitcast and click on the box "Enable Mulitcast" 

        Image
      • Under the " Multicast Policies" Select the option "Enable reception of all Multicast addresses"
      • Click on "ACCEPT" at the bottom


    Step 2: Enable Multicast on LAN, WLAN interfaces.

    • Navigate to System Setup | Network | Interfaces and edit the LAN interface
    • on the interface, click on Advanced and select the option "Enable Mulitcast Support"
    • Click on OK
    • Follow the same steps listed above for the WLAN zone or interface


    Image

    Step 3 Enable firewall access rules from LAN to Multicast zones.

    • Navigate to Policies | Rules | Access Rules
    • Choose the From , Choose LAN to Mulitcast as shown in the GUI.

       Image
    • There should be Auto-Added Rules. If there are none, then add the rules as shown in the GUI

      Image



    Step 4: Create 2 IP helper policies for NetBIOS from WLAN to LAN and for mDNS from LAN to WLAN subnets and vice versa.

    • Navigate to System Setup | Network | IP Helper and click on "Enable IP Helper"
    • Click on Accept at the bottom

      Image
    • Enable NetBIOS and mDNS under Relay Protocols

       Image
    • Click on "Add" under the "Policies"
    • Enter the following
      • Protocol : mDNS
      • From : Interface X0
      • To: WLAN Subnets
      • Comment: *if Required*
        Image
    • Follow the same steps listed above to create a new policy and configure from "WLAN Interface" to the "LAN subnets"


    How to Test:

    Search for LAN printer through AirPrint and print a test page.

    See Also:

    Configure IP Multicast
    Configure IP Helper Policies

    Related Articles

    • Identical Access Rules for different users/user groups
    • Advanced Network Security eLearning Training Course
    • Network Security Essentials eLearning Training Course

    Categories

    • Firewalls > SonicWall NSA Series
    • Firewalls > TZ Series
    • Firewalls > SonicWall SuperMassive 9000 Series
    • Firewalls > NSa Series

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