simple samba configuration

I am building a new home server from a laptop with a smashed screen, and I just configured the file server part of it.

After stripping out the comments and most of the configuration directives from the stock smb.conf file, I was left with a nice short file that works. The objective was to have the home directory available for users that are configured, and a public directory for anyone, also there should be no permissions restrictions on the public directory, people should be able to modify each others files.

The resulting /etc/samba/smb.conf file is

[global]
dns proxy = no
map to guest = Bad User
guest account = guest
unix extensions = no

server string = Home server
log file = /var/log/samba/log.%m
max log size = 1000
syslog = 0

[homes]
browsable = no
read only = no
valid users = %S

[public]
read only = no
guest ok = yes
force user = guest
path = /export/public

I had also created a guest account for this setup.

sudo useradd guest -m -p \*

And of course the public directory to share

sudo mkdir /export
sudo mkdir /export/public
sudo chown guest /export/public

The server is behind a home router, which acts as a firewall, I would not put a configuration like this directly attached to the internet.