Tftp
Triviaalne failiedastusprotokoll UDP porti 69 kasutav ja väga vähe mäluruumi nõudev internetiutiliit failide edastamiseks aastast 1980. Seda on lihtsam kasutada kui FTP’d, kuid on ka väiksemate võimalustega (ei saa kasutada mitmest paketist koosnevate andmeüksuste edastamiseks).
TFTP protokollis puuduvad autentimis- ja krüpteerimismehhanismid ning leiab kasutuses peamiselt kahel juhul. Erinevate võrgu jms seadmete firmware uuendamiseks ja võrguboodil nn kõhnade klientide - terminalide startimiseks.
tftp server
Debianis paigaldamine
# apt-get install tftpd-hpa
Konfiguratsioonifail /etc/default/tftpd-hpa
TFTP_USERNAME="tftp" TFTP_DIRECTORY="/var/lib/tftpboot" TFTP_ADDRESS="0.0.0.0:69" TFTP_OPTIONS="--secure --create"
Change root directory on startup. This means the remote host does not need to pass along the directory as part of the transfer, and may add security. When --secure is specified, exactly one directory should be specified on the command line. The use of this option is recommended for security as well as compatibility with some boot ROMs which cannot be easily made to include a directory name in its request.
Allow new files to be created. By default, tftpd will only allow upload of files that already exist. Files are created with default permissions allowing anyone to read or write them, unless the --permissive or --umask options are specified.
Gerntoos on serveri konfigutatsoon failis /etc/conf.d/in.tftpd
Seal tuleb muuta parameetreid näiteks
INTFTPD_PATH="/srv/tftproot/"
INTFTPD_OPTS="-R 4096:32767 -s ${INTFTPD_PATH} -a 192.168.1.10 -c"
Tftp kliendi kasutamine.
Kliendi installi Debianis
# apt-get install tftp
Faili saatmine tftp serverisse
$ tftp -v 192.168.1.1 -c put myfile
Faili küsimiseks
$ tftp localhost -c get pxelinux.0
Tftp serveris käskude käivitamine ja staatuse vaatamine.
$ tftp 192.168.1.2 tftp> status Connected to 192.168.1.5. Mode: netascii Verbose: off Tracing: off Rexmt-interval: 5 seconds, Max-timeout: 25 seconds tftp> get openbsd/pxeboot Received 54234 bytes in 0.0 seconds tftp> get openbsd/bsd.rd Received 6465608 bytes in 0.5 seconds tftp> quit
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_tech_note09186a008020260d.shtml cisco ruuterite konfiguratsiooni automaatne varundamine tftp abil.
