Firewall Configuration and Troubleshooting
Description Server Type Port Potential Client Firewall Issue
Certificate Enrollment TCP 1640 The client displays a failure
message during provisioning,
registration, or other operation.
Table 3Firewall Routes Required by Zebra PTT Pro(Continued)
Troubleshoot Firewall Issues
This section describes troubleshooting procedures if the client cannot connect to a server. When this
occurs, the client might display a red Disconnected from server notification at the top of its main screen.
Some procedures may be specific to a Windows computer hosting the PTT Pro PC Client, while some
procedures may also be useful on a device operating with Wi-Fi service.
Before proceeding, contact your IT department to obtain the correct [PORT], [PORT-RANGE], and [SERVER]
values.
1. Verify that the firewall is configured correctly.Firewall settings should be checked at multiple levels:
a) Contact IT to confirm that the enterprise firewall is configured correctly based on the routing
information described Configure the Firewall.
b) Check the device’s local Windows firewall if applicable. If the firewall is enabled, try the following
options:
• Turn the Firewall off.
• Follow the instructions for your Windows release to allow an application (For example, Zebra PTT
Pro) through the firewall.
c) Check if the device is running an Anti-Virus/Firewall program, such as Bitdefender.
• If such as program is running, then inspect if its configuration/rules are blocking the Zebra PTT
Pro client network operation.
• Consider adding an exception, such as adding the Zebra PTT Pro or its network routes to the
white list of allowed operations. Otherwise, consider disabling the Anti-Virus/Firewall program
temporarily to test the Zebra PTT Pro client program operation without it.
2. Verify that the device has internet connectivity.
• Ping a well-known address (for example,ping www.google.com). If the ping command is
successful, the device has internet connectivity. You may also ping the PTT servers, for example
ping provision.pttpro.zebra.com.
3. Verify if the device's IP address is constant or changing over time.
• Does the device’s IP address change over time? Each time the device’s IP address changes, the
dispatch client will re-register with the server.
• Display the device’s IP address at different times (for example, ipconfig command for Windows)
such as each hour or day and note the IP Address value each time.
48