AbstractTcpTransport connection reset by peer when using PanOS 9 input as a source

## Expected Behavior

As a Graylog user when I create a PanOS 8 or 9 input, I expect it to work out of the box without any issues.
## Current Behavior

Currently when looking through the Graylog master logs we see the following message over and over
`(cause java.io.IOException: Connection reset by peer)`
## Possible Solution

I'm unclear exactly as to why this is occurring. We know the customer is behind an F5 load balancer however we have attempted using keep alive and not keep alive settings on the inputs. We have additionally attempted using both PanUS 8 and 9 and still got the same errors. Strangely when using raw tcp input we did not get this error however the fields were not created and the time was incorrect when using raw input. We also checked the logs for Graylog and also for F5 and found nothing of note.
## Steps to Reproduce (for bugs)

1. Please see HS-635292232 for additional notes and context.