[SOLVED] smbtree: This is utility doesn't work if netbios name resolution is not configured.

[Dmitry_T]

Hello,
I'm trying to configure samba on CentOS Stream 9.

I have a clean OS in VirtualBox.
"yum info samba samba-client " shows that version 4.18.6-100.el9 is installed.

I'm used to the fact that in Debian smbtree works immediately after installing samba.
However, here smbtree returns the error:

main: This is utility doesn't work if netbios name resolution is not configured.

The complete error is shown in the screenshot:

smbtree_2023-10-04_00-05-48.png (17.12 KiB) Viewed 10635 times

I didn't find such an error on the Internet.
What needs to be configured in the CentOS for smbtree to work correctly?
I've never used CentOS before...

testparm:

testparm_2023-10-04_00-32-03.png (39.92 KiB) Viewed 10635 times

[TrevorH]

As far as I understand that text, it's not an error, it's telling you that it only works if SMB1 (totally insecure) is enabled on your windows servers..

[Dmitry_T]

As far as I understand that text, it's not an error, it's telling you that it only works if SMB1 (totally insecure) is enabled on your windows servers..

I added the line "server min protocol = NT1" after [global] to /etc/samba/smb.conf and "systemctl restart smb nmb".
Running "smbtree --option="client min protocol=NT1"" still failed:

smbtree_NT1_2023-10-04_21-11-49.png (25.24 KiB) Viewed 10565 times

On Debian (also with "server min protocol = NT1"), smbtree shows its own OS shares regardless of the presence of windows servers:

smbtree_NT1_debian_2023-10-04_21-13-36.png (32.76 KiB) Viewed 10565 times

[Dmitry_T]

Problem solved. It turned out that the necessary services were not running. This was a big surprise for me after Debian.
Solution:

Code: Select all

sudo systemctl enable --now smb
sudo systemctl enable --now nmb

[tunk]

I guess the reason is that running unnecessary services are potential security risks.

[TrevorH]

It does seem that smb is disabled out of the box, presumably for security reasons though you have to explicitly install the samba package to get the service so it does seem a bit overkill...