Set the time before the server retransmits a packet, in microseconds. Set the time before the server retransmits a packet, in seconds. This version of tftpd only supports the tsize option for binary (octet) mode Report the size of the file that is about to be transferred. The maximum is 32768īytes (the largest power of 2 less than or equal to 65464.) Set the transfer block size to anything less than or equal to the specified option, but restrict the possible responses to powers of 2. This version of tftpd can support any block size up to the Set the transfer block size to anything less than or equal to the specified option. This version of tftpd supports RFC 2347 option negotation. version, -V Print the version number and configuration to standard output, then exit gracefully. port-range port:port, -R port:port Force the server port number (the Transaction ID) to be in the specified range of port numbers. Yet do not handle fragmented packets correctly for these clients, it is recommended to set this value to the smallest MTU on your network minus 32 bytes (20īytes for IP, 8 for UDP, and 4 for TFTP less if you use IP options on your network.) For example, on a standard Ethernet (MTU 1500) a value of 1468 is Some embedded clients request large block sizes and The permitted range for this parameter is from 512 to 65464. blocksize max-block-size, -B max-block-size Specifies the maximum permitted block size. refuse tftp-option, -r tftp-option Indicate that a specific RFC 2347 TFTP option should never be accepted. verbosity value Set the verbosity value to value. This flag can be specified multiple times for even higher verbosity. verbose, -v Increase the logging verbosity of tftpd. Option may not be compiled in, see the output of in.tftpd -V to verify whether or not it is available. See the section on filename remapping below. The remap-file is a file containing the remapping rules. mapfile remap-file, -m remap-file Specify the use of filename remapping. This can be modified by the client if the timeout or retransmit timeout, -T timeout Determine the default timeout, in microseconds, before the first packet is retransmitted. Respawn the server when another request comes in. timeout timeout, -t timeout When run from inetd this specifies how long, in seconds, to wait for a second connection before terminating the server. permissive, -p Perform no additional permissions checks above the normal system-provided access controls for the user specified via the -user option. Not specified, or inherited from the invoking process if -permissive is specified. The default is zero (anyone can read or write) if the -permissive option is umask umask, -U umask Sets the umask for newly created files to the specified value. Group IDs will be set to the ones specified in the system permission database for this username. The user ID, group ID, and (if possible on the platform) the supplementary user username, -u username Specify the username which tftpd will run as the default is "nobody". The use of this option is recommended for security as wellĪs compatibility with some boot ROMs which cannot be easily made to include a directory name in its request. secure is specified, exactly one directory should be specified on the command line. This means the remote host does not need to pass along the directory as part of the transfer, and may add security. secure, -s Change root directory on startup. Files are created with default permissionsĪllowing anyone to read or write them, unless the -permissive or -umask options are specified. By default, tftpd will only allow upload of files that already exist. create, -c Allow new files to be created. Please note: Numeric IPv6 adresses must be enclosed in square brackets to avoid ambiguity with the optional port information. To the tftp port specified in /etc/services on all local addresses. address, -a Specify a specific address and port to listen to when called with the -listen or -foreground option. foreground, -L Similar to -listen but do not detach from the foreground process. address option can be used to specify a specific local address or port to listen to. In listen mode, the -timeout option is ignored, and the l, -listen Run the server in standalone (listen) mode, rather than run from inetd. ipv6, -6 Connect with IPv6 only, if compiled in. ipv4, -4 Connect with IPv4 only, even if IPv6 support was compiled in.
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