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  • Re: Problems with tftp & tftpd on Ubuntu 24, upgraded from 22 (was Ubuntu 22, upgraded from 18)

    From Java Jive@java@evij.com.invalid to alt.os.linux,uk.comp.os.linux on Thu Oct 23 20:22:09 2025
    From Newsgroup: alt.os.linux

    On 2025-05-16 13:03, Java Jive wrote:

    Thanks to help given here recently, I still have tftp working on my
    Ubuntu 22-upgraded-to-24, as long as the firewall is disabled. The
    moment I enable the firewall ...

    ufw enable

    ... getting from localhost still works, but any attempt to get from any external server hangs and times out. I've tried ...

    ufw allow 69/udp

    ... and this shows up in the status ...

    user@server:~# ufw status verbose
    Status: active
    Logging: on (low)
    Default: deny (incoming), allow (outgoing), disabled (routed)
    New profiles: skip

    To Action From
    -- ------ ----
    9200 DENY IN Anywhere
    9751 DENY IN Anywhere
    9400 DENY IN Anywhere
    69/udp ALLOW IN Anywhere
    9200 (v6) DENY IN Anywhere (v6)
    9751 (v6) DENY IN Anywhere (v6)
    9400 (v6) DENY IN Anywhere (v6)
    69/udp (v6) ALLOW IN Anywhere (v6)
    ... but any attempt to get from an external server still hangs. Turn
    the firewall off, and it just works.

    How can I configure ufw to allow tftp to work through it, preferably
    limiting access to IPs only on the local network?

    Any help given will be much appreciated.
    --

    Fake news kills!

    I may be contacted via the contact address given on my website: www.macfh.co.uk

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  • From J.O. Aho@user@example.net to alt.os.linux,uk.comp.os.linux on Thu Oct 23 21:29:32 2025
    From Newsgroup: alt.os.linux

    On 23/10/2025 21.22, Java Jive wrote:

    69/udp-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a ALLOW IN-a-a-a Anywhere

    $ grep tftp /etc/services
    tftp 69/tcp # Trivial File Transfer
    tftp 69/udp

    Maybe you need to add tcp too.
    --
    //Aho


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  • From Java Jive@java@evij.com.invalid to alt.os.linux,uk.comp.os.linux on Fri Oct 24 00:16:32 2025
    From Newsgroup: alt.os.linux

    On 2025-10-23 20:29, J.O. Aho wrote:

    On 23/10/2025 21.22, Java Jive wrote:

    69/udp-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a ALLOW IN-a-a-a Anywhere

    $ grep tftp /etc/services
    tftp-a-a-a-a-a-a-a-a-a-a-a 69/tcp-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a-a # Trivial File Transfer
    tftp-a-a-a-a-a-a-a-a-a-a-a 69/udp

    Maybe you need to add tcp too.

    Thanks as ever for the help. I realised Samba wasn't working either, so
    I just opened up to the local LAN, and that fixed both problems.
    --

    Fake news kills!

    I may be contacted via the contact address given on my website: www.macfh.co.uk

    --- Synchronet 3.21a-Linux NewsLink 1.2