acceder a recurso samba desde ip externa

[Hugo Bravo Reyes]

Hola a todos...

Tengo un servidor de archivos con samba y firestarter para compartir 
internet.
Accedo a los recursos compartidos sin problemas desde la red interna 
pero no asi desde una ip externa.
Al parecer el problema esta en la autentificacion ya que al intentarlo 
desde la ip externa, me pide nombre de usuario y password, cosa que no 
me pide si me conecto desde alguna de las ips internas....

tengo samba 3.0.10-1.fc2

Alguien me puede ayudar??
Adjunto smb.conf para quien quiera hacerlo

Muchas gracias de antemano

Hugo


------------ próxima parte ------------
# This is the main Samba configuration file. You should read the
# smb.conf(5) manual page in order to understand the options listed
# here. Samba has a huge number of configurable options (perhaps too
# many!) most of which are not shown in this example
#
# Any line which starts with a ; (semi-colon) or a # (hash)
# is a comment and is ignored. In this example we will use a #
# for commentry and a ; for parts of the config file that you
# may wish to enable
#
# NOTE: Whenever you modify this file you should run the command "testparm"
# to check that you have not made any basic syntactic errors.
#
#======================= Global Settings =====================================
[global]
	log file = /var/log/samba/%m.log
	load printers = yes
	idmap gid = 16777216-33554431
	socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
	null passwords = yes
	winbind use default domain = no
	template shell = /bin/false
	dns proxy = no
	server string = Samba Server
	idmap uid = 16777216-33554431
	default = global
	remote announce = 216.241.4.233/prosepan
	workgroup = prosepan
	os level = 20
	printcap name = /etc/printcap
	security = share
	max log size = 50

[homes]
	comment = Home Directories
	browseable = no
	writeable = yes

# Un-comment the following and create the netlogon directory for Domain Logons
; [netlogon]
;   comment = Network Logon Service
;   path = /home/netlogon
;   guest ok = yes
;   writable = no
;   share modes = no


# Un-comment the following to provide a specific roving profile share
# the default is to use the user's home directory
;[Profiles]
;    path = /home/profiles
;    browseable = no
;    guest ok = yes


# NOTE: If you have a BSD-style print system there is no need to
# specifically define each individual printer
[printers]
	comment = All Printers
	path = /var/spool/samba
	browseable = no
# Set public = yes to allow user 'guest account' to print
	printable = yes

# This one is useful for people to share files
;[tmp]
;   comment = Temporary file space
;   path = /tmp
;   read only = no
;   public = yes

# A publicly accessible directory, but read only, except for people in
# the "staff" group
;[public]
;   comment = Public Stuff
;   path = /home/samba
;   public = yes
;   read only = yes
;   write list = @staff

# Other examples.
#
# A private printer, usable only by fred. Spool data will be placed in fred's
# home directory. Note that fred must have write access to the spool directory,
# wherever it is.
;[fredsprn]
;   comment = Fred's Printer
;   valid users = fred
;   path = /homes/fred
;   printer = freds_printer
;   public = no
;   writable = no
;   printable = yes

# A private directory, usable only by fred. Note that fred requires write
# access to the directory.
;[fredsdir]
;   comment = Fred's Service
;   path = /usr/somewhere/private
;   valid users = fred
;   public = no
;   writable = yes
;   printable = no

# a service which has a different directory for each machine that connects
# this allows you to tailor configurations to incoming machines. You could
# also use the %u option to tailor it by user name.
# The %m gets replaced with the machine name that is connecting.
;[pchome]
;  comment = PC Directories
;  path = /usr/pc/%m
;  public = no
;  writable = yes

# A publicly accessible directory, read/write to all users. Note that all files
# created in the directory by users will be owned by the default user, so
# any user with access can delete any other user's files. Obviously this
# directory must be writable by the default user. Another user could of course
# be specified, in which case all files would be owned by that user instead.
;[public]
;   path = /usr/somewhere/else/public
;   public = yes
;   only guest = yes
;   writable = yes
;   printable = no

# The following two entries demonstrate how to share a directory so that two
# users can place files there that will be owned by the specific users. In this
# setup, the directory should be writable by both users and should have the
# sticky bit set on it to prevent abuse. Obviously this could be extended to
# as many users as required.
;[myshare]
;   comment = Mary's and Fred's stuff
;   path = /usr/somewhere/shared
;   valid users = mary fred
;   public = no
;   writable = yes
;   printable = no
;   create mask = 0765



[workdir]
	guest account = usuariosmb
	force user = usuariosmb
	comment = Directorio de trabajo
	writeable = yes
	guest ok = yes
	path = /workdir


[cobranzas]
	writeable = yes
	guest ok = yes
	guest only = yes
	path = /workdir/cobranzas