Installation

Why is this unknown protocol found in indexer from Windows Universal Forwarder: SSL23_GET_CLIENT_HELLO?

td-security
Observer

I install UF 8.2.4 for Windows and using default pem and CA certificate, I tried to connect UF to the indexer. However, the eventlog information cannot be sent to indexer with the error 

ERROR TcpInputProc - Error encountered for connection from src=192.168.xx.xxx:65251. error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol

I search thru the /opt/splunk/var/log/splunk/splunkd.log and not much information can be found. How can I get more detail info to troubleshoot the problem ?

 

Labels (3)
Tags (1)
0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Observability Simplified: Combining User Experience, Application Performance & ...

Tech Talk Observability Simplified: Combining User Experience, Application Performance & Network ...

Event Series May & June: From Network Visibility to Service Intelligence

Unifying the Network: Moving from Alert Noise to Service Intelligence with Splunk ITSI In today’s hybrid ...

Global Splunk User Group Events: May + June 2026

Your Splunk Community Awaits: Discover Upcoming User Group Events Worldwide    Staying ahead in the fast-paced ...