Modify the following variables in /etc/samba/smb.conf , in the group [global] , like this:

[global]
   workgroup = WERELD
   server string = Web Server
   hosts allow = 10.10.3. 192.168. 127.
   guest account = samba
   security = share

Add the group [public] at the end of it:

[public]
   path = /var/www/html/
   public = yes
   only guest = yes
   writable = yes
   printable = no

Create the user samba and set permissions to /var/www/html :

bash# /usr/sbin/useradd samba
bash# chgrp samba /var/www/html
bash# chmod 775 /var/www/html

Start the samba service:

bash# /sbin/chkconfig --level 2345 smb on
bash# /sbin/service smb start

Don't forget that the samba ports should be accepted in firewall:

bash# vi /etc/sysconfig/iptables

### accept samba ports
-A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 137 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 138 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 139 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 445 -j ACCEPT