Problem: I have two HA Proxy servers. One of them works fine with TCP pass-through traffic but the other will randomly fail ~1% of connections. The configuration is identical on both servers.
I would like to know if there is some setting I am missing that is causing the problem. Could it be the different CentOS versions?
The failure causes a .NET application to throw the following exception: “System.Security.Authentication.AuthenticationException: A call to SSPI failed, see inner exception. —> System.ComponentModel.Win32Exception: The message or signature supplied for verification has been altered”
HA Proxy is set up to pass through the TCP requests to a series of appliances. The requests use TLS. The back-end round robins between them however even with just a single appliance it has the failures.
CentOS Linux release 7.6.1810 (Core)
CentOS Linux release 7.7.1908 (Core)