[Samba] Unable to Login as Guest to Protected Share
Mckenzie Ebert
smuser287 at gmail.com
Tue Aug 10 14:41:29 UTC 2021
*> Is it possible for you to post the smb.conf ?
*
Here is my copy of the smb.conf I am currently using:
[global]
map to guest = Bad User
log file = /var/log/samba/%m
log level = 1
printcap name = /dev/null
# Buffer sizes from testing done here:
https://ubuntuforums.org/archive/index.php/t-2279604.html
# For us, we didn't need to go as high to max out the connection
socket options = TCP_NODELAY SO_RCVBUF=65536 SO_SNDBUF=65536 IPTOS_LOWDELAY
unix extensions = no
wide links = yes
follow symlinks = yes
# Disable asyncronous I/O that was causing NVME Queue timeouts
# on Lexar SSD systems
aio read size = 0
aio write size = 0
# Improves send speed drastically
use sendfile = yes
# Ensures proper security and authentication
security = user
# Stores username and guest name information
username map = /etc/samba/usermap.txt
[sdcard]
# This share allows anonymous (guest) access
# without authentication!
path = /path/to/sdcard/
read only = no
writeable = yes
public = yes
guest ok = yes
valid user = nobody,UserName
[data]
# This share allows anonymous (guest) access
# without authentication!
path = /path/to/data/
wide links = yes
follow symlinks = yes
read only = no
writeable = yes
public = yes
guest ok = yes
valid user = nobody,UserName
The username map file has the following:
UserName = UserName
nobody = *
On Wed, Aug 4, 2021 at 12:50 PM Mckenzie Ebert <smuser287 at gmail.com> wrote:
> Samba Team Members,
>
> I work with a company that sells sensors that use Samba as a way to
> transfer files from the sensors to our clients computers. The sensors run
> petalinux, and the Samba version used is 4.8.4. We do not monitor what
> version of Windows our customers run, although the majority is Windows 10.
> In the past we have simply set all shares to public and used the guest
> account with no issues. However, lately some customers are unable to access
> guest shares due to regulations set by their employer's (they are not
> allowed to change the anonymous access policy). Because of this it was
> decided to have a "backup" user that could be used as a credentialed sign
> in, with a username and password that we would provide to the customer. The
> desired behavior would be that Windows prompts for credentials upon
> attempting to access a share, at which time either the valid user
> credentials could be input or it could be left blank, resulting in the
> guest account being used instead. Both of these would be given the same
> access rights. However, I have not been able to replicate this behavior,
> nor have I found anything online that might assist in figuring out how to
> set this up. Does anyone know if this behavior is even possible, and if so
> what the configuration for that looks like?
>
> Regards,
> Mckenzie Ebert
>
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