Setup TFTP Server in RHEL/CentOS 7

Welcome to My Blog, It is my First Blog I hope I will continue with more topics on Linux, HP-UX, Oracle, WebLogic Server, Oracle Secure Backup and much more.


What is TFTP-Server

Trivial File Transfer Protocol (TFTP) is an Internet software utility for transferring ãles that is simpler to use than the File Transfer Protocol (FTP) but less capable. It is used where user authentication and directory visibility are not required. TFTP uses the User Datagram Protocol (UDP) rather than the Transmission Control Protocol (TCP).


1. Install tftp-server and xinetd is also required

# yum install -y tftp tftp-server* xinetd*



2.  Edit "/etc/xinetd.d/tftp" – set disable to no and add -c option into server_args to upload files to TFTP-Server from clients.

# vim /etc/xinetd.d/tftp

service tftp
{

         socket_type = dgram
         protocol = udp
         wait = yes
         user = root
         server = /usr/sbin/in.tftpd
         server_args = -c -s /tftpboot
         disable = no
         per_source = 15
         cps = 80 2
         flags = IPv4
}


3. Enable and Start TFTP Service

# systemctl start xinetd
# systemctl start tftp

# systemctl enable xinetd
# systemctl start tftp

After these two commands, permanent links will be made for xinetd and TFTP services.


4. Configure SELinux for TFTP service.

      check the tftp permissions in SELinux

# getsebool -a | grep tftp
 
   tftp_anon_write –> off
   tftp_home_dir –> off

     If the TFTP write is off as shown above, enable it with setsebool command as below

# setsebool -P tftp_anon_write 1
# setsebool -P tftp_home_dir 1


5. Configure Firewall for TFTP Service

# firewall-cmd --permanent --add-service=tftp -zone=public
# firewall-cmd --permanent --add-port=69/udp
# firewall-cmd --reload


6. Restart TFTP Service

# systemctl restart xinetd
# systemctl restart tftp



How to download and upload files to TFTP Server

From Windows system, with CMD

Download Files
[192.168.1.100 is TFTP-Server]

c:\>  tftp -i 192.168.1.100 get filename

Upload Files

c:\> tftp -i 192.168.1.100 put filename



Share My Blog & offer your comments and suggestions !!

Thank You !!