Hello there, I need some help with Sofia and FreeSwitch (new here :)) when the client attempts to connect I'm getting this:

2010-05-12 13:51:16.888628 [WARNING] sofia_reg.c:1031 SIP auth failure (REGISTER) on sofia profile 'internal' for [xbd6Y0PU7RI2mIOBsPW83Gw==@192.168.0.171] from ip 192.168.0.158
2010-05-12 13:51:39.707814 [WARNING] sofia_reg.c:1879 Can't find user [xbd6Y0PU7RI2mIOBsPW83Gw==@192.168.0.171]
You must define a domain called '192.168.0.171' in your directory and add a user with the id="xbd6Y0PU7RI2mIOBsPW83Gw==" attribute
and you must configure your device to use the proper domain in it's authentication credentials.
2010-05-12 13:51:39.710879 [WARNING] sofia_reg.c:1031 SIP auth failure (REGISTER) on sofia profile 'internal' for [xbd6Y0PU7RI2mIOBsPW83Gw==@192.168.0.171] from ip 192.168.0.158

I guess there is a command to allow any user using this port but I'm not sure.. tried google with no luck.

So, is there a way to allow any user to use the service or be registered automatically? since each user name, is different and I can't add each one manually (it's a lot of info), or, is possible to shutdown Sofia and use the service without it? 

Thanks  :-)
Jorel