"Failed to validate server certificate" when adding a site server to Internet Gateway

Products

• Client Management Suite

Issue/Introduction

Error when adding a site server to the Internet Gateway

You can check and see if the port is opened by using a Powershell Command:   Test-NetConnection <ipaddress> -port <port>

ComputerName     : ServerName
RemoteAddress    : 1.1.1.1
RemotePort       : 4726
InterfaceAlias   : Ethernet0
SourceAddress    : 1.1.1.2
TcpTestSucceeded : True

Cause

Port 4726 is not open on the site server, or misconfigured in IIS.

 

Resolution

By default, the gateway and site servers communicate using port 4726.  Port 4726 needs to be bound in IIS using the https protocol and the correct certificate assigned.