[syslinux] tftp problems

[Didier Spaier]

I doubt you will receive a valuable answer in this list as syslinux is
abandonware since years.

Cheers,
Didier

Le 20/11/2023 à 21:44, Ray McCaffity via Syslinux a écrit :
> Hello,
>    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 10.0.0.133
> tftp> verbose
> Verbose mode on.
> tftp> trace
> Packet tracing on.
> tftp> status
> Connected to 10.0.0.133.
> Mode: netascii Verbose: on Tracing: on Literal: off
> Rexmt-interval: 5 seconds, Max-timeout: 25 seconds
> tftp> get test.txt
> getting from 10.0.0.133:test.txt 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
> [Unit]
> Description=Tftp Server
> Requires=tftp.socket
> Documentation=man:in.tftpd
> 
> [Service]
> ExecStart=/usr/sbin/in.tftpd -c /var/lib/tftpboot
> StandardInput=socket
> 
> [Install]
> Also=tftp.socket
> ===================================
> 
> systemctl cat tftp.socket
> # /usr/lib/systemd/system/tftp.socket
> [Unit]
> Description=Tftp Server Activation Socket
> 
> [Socket]
> ListenDatagram=69
> 
> [Install]
> WantedBy=sockets.target
> 
> 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