The customer upgraded the Gateway to 8.5 and CEM agents stopped communicating with the gateway. Using psping to try to hit the gateway on port 443 generated the following error:
The remote computer refused the network connection.
The remote computer refused the network connection
You can also use Powershell Command Test-NetConnection <ipaddress> -port <port> to get similar results to PSPing:
ComputerName : ServerName
RemoteAddress : 126.96.36.199
RemotePort : 443
InterfaceAlias : tap06c3eff7-b0
SourceAddress : 188.8.131.52
TcpTestSucceeded : True
More information on Test-NetConnection: https://docs.microsoft.com/en-us/powershell/module/nettcpip/test-netconnection?view=windowsserver2022-ps
If you have the Windows firewall turned on during installation of the gateway an inbound rule is created that causes the error.
This issue has been reported to the Symantec Development team for review.
Please try the following: