[syslinux] tftp problems

Ray McCaffity summitflier at yahoo.com
Mon Nov 20 12:44:55 PST 2023

   I am a fairly experienced user.  I have set up tftp in the past at various times, although it's been a few years.
I am using version...
Version      : 5.2
Release      : 37.el9

On AlmaLinux 9.3, I currently have SELinux disabled.
]# firewall-cmd --list-services
cockpit dhcp dhcpv6-client http ssh tftp

I have tftp enabled on the firewall.  ( I have tried with the firewall completely disabled also )
I can get a file locally on the tftp server, as any user, even non-root.I cannot get any file remotely from any other system.  These are all Linux systems running either Fedora 39 or Alma 9.3
I get the same results on a Fedora 39 system, also with tftp-server installed.
This is the message from any client.

tftp> verbose
Verbose mode on.
tftp> trace
Packet tracing on.
tftp> status
Connected to
Mode: netascii Verbose: on Tracing: on Literal: off
Rexmt-interval: 5 seconds, Max-timeout: 25 seconds
tftp> get test.txt
getting from to test.txt [netascii]
sent RRQ <file=test.txt, mode=netascii>
sent RRQ <file=test.txt, mode=netascii>
sent RRQ <file=test.txt, mode=netascii>
sent RRQ <file=test.txt, mode=netascii>
sent RRQ <file=test.txt, mode=netascii>
Transfer timed out.

This is on the server.

# systemctl status -l tftp.socket
● tftp.socket - Tftp Server Activation Socket
     Loaded: loaded (/usr/lib/systemd/system/tftp.socket; enabled; preset: disabled)
     Active: active (listening) since Mon 2023-11-20 12:37:31 PST; 20s ago
      Until: Mon 2023-11-20 12:37:31 PST; 20s ago
   Triggers: ● tftp.service
     Listen: [::]:69 (Datagram)
      Tasks: 0 (limit: 48181)
     Memory: 4.0K
        CPU: 328us
     CGroup: /system.slice/tftp.socket

Nov 20 12:37:31 labKickstart1 systemd[1]: Listening on Tftp Server Activation Socket.
Permissions of /var/lib/tftpboot
drwxrwxrwx.  4 root           root             49 Nov 20 12:26 tftpboot
Permissions of files in this directory.
ls -l /var/lib/tftpboot/
total 12
drwxrwxrwx 7 root root 4096 Nov 16 13:10 efi
drwxrwxrwx 4 root root 4096 Nov 16 13:10 pxelinux
-rwxrwxrwx 1 root root   23 Nov 16 13:10 test.txt

These are my systemd service files.
# systemctl cat tftp.service
# /usr/lib/systemd/system/tftp.service
Description=Tftp Server

ExecStart=/usr/sbin/in.tftpd -c /var/lib/tftpboot


systemctl cat tftp.socket
# /usr/lib/systemd/system/tftp.socket
Description=Tftp Server Activation Socket



I have searched several web pages all over the web, but most have examples for either a/etc/xinetd/tftp-hpa file, or a /etc/default/tftp file.  I do not have either of these.
Ray McCaffitysummitflier at yahoo.com

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