Installed UBUNTU-server 12.04 and configured /etc/samba/smb.conf as:

 #======================= Global Settings =======================

[global]
workgroup = HEMMA 
server string = %h server (Samba, Ubuntu)
security = user
wins support = yes
dns proxy = no
log file = /var/log/samba/log.%m
max log size = 1000
syslog = 0
panic action = /usr/share/samba/panic-action %d
encrypt passwords = no
passdb backend = tdbsam
obey pam restrictions = yes
unix password sync = yes
passwd program = /usr/bin/passwd %u
passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
pam password change = yes
map to guest = bad user
############ Misc ############
usershare allow guests = yes

#======================= Share Definitions =======================
[printers]
comment = All Printers
browseable = no
path = /var/spool/samba
printable = yes
guest ok = no
read only = yes
create mask = 0700

# Windows clients look for this share name as a source of downloadable
# printer drivers
[print$]
comment = Printer Drivers
path = /var/lib/samba/printers
browseable = yes
read only = yes
guest ok = no

[Bilder original]
comment = Original bilder
path = /mnt/bilder/org
browseable = yes
read only = no
guest ok = no
create mask = 0755
[Bilder publika]
comment = Bilder för allmän visning
path = /mnt/bilder/public
browseable = yes
read only = yes
guest ok = yes
[Musik]
comment = Musik
path = /mnt/music/public
browseable = yes
read only = yes
guest ok = yes

I have a network setup around a 4G router "HUAWEI B593" where some computers are connected by WIFI and others by LAN.

The server is connected by LAN.

On one computer running windows XP I can see the server but are not allowed to acces them.

On another computer on the WIFI-net running win7 I cannot see the server at all but I can ping the server and I can see the smb-protocoll is running when sniffing with wireshark.

I don't primarily want to use passwords, computers on the lan and wifi should be able to connect without any login-procedure.

I'm sure my config is not sufficient but have hard to understand how I should do. Theres a lot of descriptions on the net but most is old and none have been of any help.

I'm also confused by the fact that I can not se the sever on my win7-machine even though it communicates with the samba-server.

Would be very happy if anyone could spread some light over this mess.