Every couple of hours the Portal freezes and must be restarted. .
All supported DevTest versions and environments
The Portals internal agent is repeatedly attempting to connect to the broker.
The broker is not accepting connections as indicated by errors the brokers log.
Transport failed: javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
Set lisa.net.default.protocol=ssl in local.properties
Also, increasing the portal memory may help.