Samba?

public = yes

в описании нужной шары

мой конфиг
[global]
client code page = 866
workgroup = BLA
netbios name = BLA_BLA
server string = Samba Server %v
security = SHARE
lanman auth = Yes
log file = /var/log/samba/%m.log
max log size = 0
time server = Yes
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
character set = KOI8-R
dns proxy = No
wins server = 1.1.1.1
preload = ftp
socket address = 1.1.1.10
create mask = 0644
directory mask = 0644
printing = cups
hide dot files = No

[ftp]
path = /var/ftp/pub
guest ok = Yes
# status = No
max connections = 16

не все тебе пригодиться, но секурити обязательно...
ЗЫ я вхожу в домен с регистрацией