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Setup tFTP op Linux Mint 22

Een tFTP-server (Trivial File Transfer Protocol) is een eenvoudige server die wordt gebruikt voor het snel overzetten van bestanden binnen een lokaal netwerk, zonder dat daar een wachtwoord of complexe login voor nodig is. Vanwege zijn eenvoud en lage overhead wordt het vooral ingezet voor het pushen van configuratiebestanden en firmware-updates naar netwerkapparatuur, zoals Cisco-switches en routers.

-- IN PROGRESS --

Prereqs

Update the APT cache

sudo apt update

guru@lab:~$ sudo apt update
Hit:1 http://archive.ubuntu.com/ubuntu jammy InRelease
Hit:2 http://security.ubuntu.com/ubuntu jammy-security InRelease                                                      
Hit:3 http://archive.ubuntu.com/ubuntu jammy-updates InRelease                                                        
Ign:4 https://linuxmint-packages.mirror.liteserver.nl victoria InRelease                        
Hit:5 http://archive.ubuntu.com/ubuntu jammy-backports InRelease                                
Hit:6 https://linuxmint-packages.mirror.liteserver.nl victoria Release                          
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
guru@lab:~$

Install the TFTP server package

sudo apt install tftpd-hpa

guru@lab:~$ sudo apt install tftpd-hpa
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Suggested packages:
pxelinux
The following NEW packages will be installed:
tftpd-hpa
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 40,7 kB of archives.
After this operation, 122 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu jammy/main amd64 tftpd-hpa amd64 5.2+20150808-1.2build2 [40,7 kB]
Fetched 40,7 kB in 0s (83,4 kB/s)  
Preconfiguring packages ...
Selecting previously unselected package tftpd-hpa.
(Reading database ... 561282 files and directories currently installed.)
Preparing to unpack .../tftpd-hpa_5.2+20150808-1.2build2_amd64.deb ...
Unpacking tftpd-hpa (5.2+20150808-1.2build2) ...
Setting up tftpd-hpa (5.2+20150808-1.2build2) ...
Processing triggers for man-db (2.10.2-1) ...
guru@lab:~$

Configure the service (optional)

cat /etc/default/tftpd-hpa

guru@lab:~$ cat /etc/default/tftpd-hpa 
# /etc/default/tftpd-hpa

TFTP_USERNAME="tftp"
TFTP_DIRECTORY="/srv/tftp"
TFTP_ADDRESS=":69"
TFTP_OPTIONS="--secure"
guru@lab:~$

View directory permissions/ownership

ls -ld /srv/tftp/

guru@lab:~$ ls -ld /srv/tftp/
drwxr-xr-x 2 root nogroup 4096 Sep  7 13:56 /srv/tftp/
guru@lab:~$

Verify the service

sudo systemctl status tftpd-hpa

guru@lab:~$ sudo systemctl status tftpd-hpa
● tftpd-hpa.service - LSB: HPA's tftp server
    Loaded: loaded (/etc/init.d/tftpd-hpa; generated)
    Active: active (running) since Thu 2023-09-07 13:56:28 CEST; 9min ago
    Docs: man:systemd-sysv-generator(8)
    Process: 3293 ExecStart=/etc/init.d/tftpd-hpa start (code=exited, status=0/SUCCESS)
    Tasks: 1 (limit: 4539)
    Memory: 404.0K
        CPU: 8ms
    CGroup: /system.slice/tftpd-hpa.service
            └─3301 /usr/sbin/in.tftpd --listen --user tftp --address :69 --secure /srv/tftp

Sep 07 13:56:28 lab systemd[1]: Starting LSB: HPA's tftp server...
Sep 07 13:56:28 lab tftpd-hpa[3293]:  * Starting HPA's tftpd in.tftpd
Sep 07 13:56:28 lab tftpd-hpa[3293]:    ...done.
Sep 07 13:56:28 lab systemd[1]: Started LSB: HPA's tftp server.
guru@lab:~$

Enable the service to start on boot (optional)

sudo systemctl enable tftpd-hpa

guru@lab:/srv/tftp$ sudo systemctl enable tftpd-hpa
[sudo] password for guru:     
tftpd-hpa.service is not a native service, redirecting to systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable tftpd-hpa
guru@lab:/srv/tftp$

Serve a file

In this example, a valid Cisco IOS image is copied to the tFTP directory and permissions are set.

sudo cp /home/guru/Downloads/c2960-lanbasek9-mz.152-7.E8.bin /srv/tftp/
sudo chmod 644 /srv/tftp/c2960-lanbasek9-mz.152-7.E8.bin

guru@lab:~$ sudo cp /home/guru/Downloads/c2960-lanbasek9-mz.152-7.E8.bin /srv/tftp/
[sudo] password for guru:     
guru@lab:~$ sudo chmod 644 /srv/tftp/c2960-lanbasek9-mz.152-7.E8.bin 
guru@lab:~$