The PXE supports these network communication services: HTTPS, HTTP, Telnet and SSH.
HTTPS and HTTP enable the access to the web interface, and Telnet and SSH enable the access to the command line interface. See Using the Command Line Interface.
By default, SSH is enabled, Telnet is disabled, and all TCP ports for supported services are set to standard ports. You can change default settings if necessary.
Note: Telnet access is disabled by default because it communicates openly and is thus insecure.
In addition, the PXE also supports the SNMP and Modbus/TCP protocols.