authentication Server On Linux

How I can make an authentication server on linux, what database software I need and what protocol I use to make it

Regards.,,,,

Meastro

What do you mean by authentication server?!
What do you want to authenticate, is it Dialup users, Windows machines, email, etc...

i think you mean NIC ,,, which enable you to login to some linux boxes by one passwd by to all users ,,,

this why NIC come in ,, it use to make authentication for several PC's by login to one PC which is the SERVER .

if you use Redhat Linux type in the console mode this command :

setup

and a little program will show you what i mean ;-)

if you think you can't make it by your selft ,,, just ask again and i will help you ;-)

Thanks for answers , i have a dailup users connect via modem pool conected to Cisco router , i want from router to conect to Linux server and check the user name and password there,

Thanks alot

Meastro

Developer: I think you mean NIS (Network Information Service)

meastro: You need either Tacacs or Radius server, CISCO can authenticate on both, I recommend going with Radius it more widely used and have more features (I think :))

User information can be stroed in many places depending on the Radius software you are using, check these two:

Citron Radius
http://www.miquels.cistron.nl/radius/

IC Radius (MySQL backend)
http://radius.innercite.com/

NOTE: if you have limited and fixed number of user may be it is better to store them localy in CISCO router.

Thanks alot for you all and for rayed ,
I tested, that's is what i need .

Thanks again for help .

Meastro