Construction and test of TFTP server under unbuntu (Debian)

According to some online tutorials , I tested the following , Can be transferred successfully

One 、 Download and install

Download and install tftp And daemons ：

sudo apt-get install tftp-hpa tftpd-hpa xinetd 

Two 、 establish tftp Folder

Generally, the root directory is created ：
And change the permission so that everyone can access and modify

sudo mkdir tftpboot 
sudo chmod 777 tftpboot 

3、 ... and 、 Modify the configuration file

then , Entry directory /etc/xinetd.d/, And create a new file in it tftp, Add the specified content to tftp In file ：

sudo vim /etc/xinetd.d/tftp

Add the following ：

service tftp 
{
     
disable = no 138 
socket_type = dgram 
protocol = udp 
wait = yes 
user = root 
server = /usr/sbin/in.tftpd 
server_args = -s /tftpboot -c 
per_source = 11 
cps = 100 2 
} 

server_args It's set up tftp Catalog .
Modify another configuration file ：

vim /etc/default/tftpd-hpa

The content is ：

TFTP_USERNAME="tftp" 
TFTP_DIRECTORY="/tftpboot" 
TFTP_ADDRESS="0.0.0.0:69" 
TFTP_OPTIONS="--secure -l -c -s" 

Four 、 restart tftp service

The order is as follows ：

sudo /etc/init.d/xinetd reload 
sudo /etc/init.d/xinetd restart 
sudo /etc/init.d/tftpd-hpa restart 

If the last restart fails , Refer to the following methods ：
tfpd-hpa Solution to restart failure

5、 ... and 、TFTP Server testing

Get into tftp Under the folder , New file test

cd /tftp
vim test

You can enter custom content, such as ：tftp test;

then , Open another terminal ：
Enter the command ：tftp 192.168.1.201
This ip It's your own server host ip;
Enter the command

get test

And then you see test Downloaded ;

6、 ... and 、tftp Common commands

Parameter description ：
-l yes local Abbreviation , The heel exists in Client The source file name of , Or download Client after Renamed file name .
-r yes remote Abbreviation , Heel Server namely PC machine tftp The source text in the root directory of the server Piece name , Or upload Server The renamed file name .
-g yes get Abbreviation , When downloading files ,
-p yes put Abbreviation , Upload files with ,
tftp The default occupation is 69 port .
According to the above parameters ,tftp The command format of is as follows

1、 download

tftp –g –l B.txt –r A.txt 192.168.1.2

From server Medium tftp The root directory , Download the file A.txt To Client And changed its name to B.txt; If not renamed ,B.txt Just change it to A.txt.

tftp –g –r A.txt 192.168.1.2

Download directly without renaming

2、 Upload

tftp  -p –r B.txt 192.168.1.2

From Client Upload files B.txt To Server, And do not rename ;

The upload and download above cannot be tested locally , You need to use the development board to test ;
Locally , Use tftp +ip

Reference resources ftfp command
tftp Server setup