When the beacon or any service is started a random UDP port is used

Document ID : KB000027008
Last Modified Date : 14/02/2018
Show Technical Document Details

Description:

When you start the beacon service a random UDP port is grabbed.
When the beacon is stopped and restarted a different UDP port is grabbed.
If you have this machine configured with a fire-wall, you need to continue to open up ports.  

Steps to Reproduce:

  1. Start the beacon
  2. Run admin tower
  3. List clients
    Notice the IP address of the machine and the port being used
  4. Stop the beacon
  5. Start the beacon
  6. Run admin tower
  7. List clients

Expected: The IP address of the machine should reference the same port
Actual: Notice the IP address of the machine with a different port being used


Solution:

JGroups requires an Ephemeral Port range to be open. It will pull a "random" port from that range.
This is documented in the install guide:

Ephemeral Ports
All operating systems specify an ephemeral (short-lived) port range by default. The traditional BSD range is 1024 through 4999 though the IANA suggests 49152 to 65535. It varies between operating systems, and it is possible to disable. CA Clarity PPM does not care what the range is, but it does require a range be enabled. This is primarily for multi-casting to function.
Type: Server to Server