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TFTP

Trivial File Transfer Protocol (TFTP) uses TCP port 69. It is used mostly for booting UNIX or UNIX-like systems that do not have a local disk (this process is also known as netbooting) and for storing and retrieving configuration files for devices such as Cisco routers and switches.

Transfers are not secure on TFTP because it does not require authentication for clients to connect and transfer files.

Your storage system’s TFTP server is not enabled by default. When TFTP is enabled, the administrator must specify a directory to be used by TFTP clients, and these clients cannot access other directories. Even within the TFTP directory, access is read-only. TFTP should be enabled only if necessary. You can disable TFTP using the following option: options tftpd.enable off

You can configure the maximum number of simultaneous connections handled by the TFTP server by using the tftpd.max_connections option. The default number of TFTP connections is 8. The maximum number of connections supported is 32.