My Oracle Support Banner

OUD - Security TroubleShooting - Debugging SSL Connection Using Openssl s_client Command (Doc ID 1396054.1)

Last updated on MAY 17, 2018

Applies to:

Oracle Unified Directory - Version and later
Information in this document applies to any platform.
***Checked for relevance on 15-07-2013***


The goal of this document is to explain how to it is possible to debug a SSL connection using Openssl s_client command.

The s_client command implements a generic SSL/TLS client which connects to a host using SSL/TLS. It is a very useful diagnostic tool for SSL servers.


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document
 1) Prerequisite
 2)  Symptom: Connection refused
 3) symptom:  Verify return code: 18 (self signed certificate)
 4) Example of working session (Verify return code: 0 (ok))

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.