How do I resolve universal forwarder issue with TCP connection (can telnet to 8089 and 9997 though from host)?

[ericzabowski]

Hello! Been using the universal forwarder for years connecting to a heavy forwarder currently forwarding to splunk cloud. Installing it on a new AWS host, running into the below errors when data inputs change. I've confirmed that the forwarder is reachable out from the host using telnet.

Any Ideas?

05-08-2023 10:35:09.570 -0400 INFO AutoLoadBalancedConnectionStrategy [668 TcpOutEloop] - Removing quarantine from idx=10.9.101.133:9997 connid=2
05-08-2023 10:35:09.570 -0400 INFO AutoLoadBalancedConnectionStrategy [668 TcpOutEloop] - Removing quarantine from idx=10.9.101.133:9997 connid=3
05-08-2023 10:35:09.601 -0400 ERROR TcpOutputFd [668 TcpOutEloop] - Read error. An established connection was aborted by the software in your host machine.
05-08-2023 10:35:09.648 -0400 ERROR TcpOutputFd [668 TcpOutEloop] - Read error. An established connection was aborted by the software in your host machine.
05-08-2023 10:35:09.679 -0400 ERROR TcpOutputFd [668 TcpOutEloop] - Read error. An established connection was aborted by the software in your host machine.
05-08-2023 10:35:09.726 -0400 ERROR TcpOutputFd [668 TcpOutEloop] - Read error. An established connection was aborted by the software in your host machine.
05-08-2023 10:35:09.773 -0400 ERROR TcpOutputFd [668 TcpOutEloop] - Read error. An established connection was aborted by the software in your host machine.
05-08-2023 10:35:09.773 -0400 WARN AutoLoadBalancedConnectionStrategy [668 TcpOutEloop] - Applying quarantine to ip=10.9.101.133 port=9997 connid=3 _numberOfFailures=2
05-08-2023 10:35:09.804 -0400 ERROR TcpOutputFd [668 TcpOutEloop] - Read error. An established connection was aborted by the software in your host machine.
05-08-2023 10:35:09.804 -0400 WARN AutoLoadBalancedConnectionStrategy [668 TcpOutEloop] - Applying quarantine to ip=10.9.101.133 port=9997 connid=2 _numberOfFailures=2
05-08-2023 10:35:09.851 -0400 ERROR TcpOutputFd [668 TcpOutEloop] - Read error. An established connection was aborted by the software in your host machine.

[ericzabowski · Accepted solution]

Resolved - Outbound traffic was fine from the AWS host, but inbound traffic to our DC wasn't showing the traffic reaching the heavy forwarder.