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Remote Authentication Dial-In User Service. Microsoft includes this since NT 4.0, so often folks think it's a Microsoft invention. It isn't: it was first used by a company named Livingston Enterprises, but it has since been published as an internet protocol: http://www.ietf.org/rfc/rfc2138.txt and http://www.ietf.org/rfc/rfc2139.txt and there are open source implementations (http://www.gnu.org/software/radius/radius.html).
If you need this for an older NT4.0 server, see NT 4.0 Option Pack 4
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---February 9, 2005
I am in the process of learning freeradius, and trying to integrate it into my PPTP VPN server, which runs on linux < http://poptop.org > There is not very good instructions on this, so I am using the good ole "trial and error" install method. I have most of everything working, but it simply will not authenticate! I must be missing one piece. I am sure I will figure it out, and get things working, but I have been off that project for a couple of weeks now.
I did make all my users change their passwords, to include special characters, as well as upper and lowercase letters to help against brute force cracking. I was hoping to use Radius, to limit the number of bad password attempts, since there does not seem to be any way to use PAM with MS-CHAP authentication with ppp. It's too bad, since that would be a simple fix. I guess the only alternative is to use Radius for ppp authentication.
There is also a book on Radius, but it is quite thin, and did not offer me any answers to my problems.
http://www.amazon.com/exec/obidos/tg/detail/-/0596003226/qid=1107955776/sr=8-1/ref=pd_bbs_1/103-3849812-6655050?v=glance&s=books&n=507846
--BruceGarlock
---February 9, 2005
I am in the process of learning freeradius < http://freeradius.org/ > , and trying to integrate it into my PPTP VPN server, which runs on linux < http://poptop.org > There is not very good instructions on this, so I am using the good ole "trial and error" install method. I have most of everything working, but it simply will not authenticate! I must be missing one piece. I am sure I will figure it out, and get things working, but I have been off that project for a couple of weeks now.
I did make all my users change their passwords, to include special characters, as well as upper and lowercase letters to help against brute force cracking. I was hoping to use Radius, to limit the number of bad password attempts, since there does not seem to be any way to use PAM with MS-CHAP authentication with ppp. It's too bad, since that would be a simple fix. I guess the only alternative is to use Radius for ppp authentication.
There is also a book on Radius, but it is quite thin, and did not offer me any answers to my problems.
http://www.amazon.com/exec/obidos/tg/detail/-/0596003226/qid=1107955776/sr=8-1/ref=pd_bbs_1/103-3849812-6655050?v=glance&s=books&n=507846
--BruceGarlock
---February 9, 2005
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