TFTP
Trivial File Transfer Protocol (TFTP) is a file transfer protocol that is simpler to use than the File Transfer Protocol (FTP) but that proposes less features. TFTP uses the User Datagram Protocol (UDP) rather than the Transmission Control Protocol (TCP).
Available to all SRX running 12.3X48+
Available to all MX running 20.2R1+
Available to all vSRX running 20.3R1+