Security Basics mailing list archives
Re: Authentication question & problem
From: Nick Owen <nickowen () mindspring com>
Date: Fri, 25 Apr 2008 09:23:30 -0400
evilwon12 () yahoo com wrote:
Here is what my developers are wanting to do, and I cannot think of a secure way to do this. Have a user (at home) authenticate against our LDAP through a company portal/site and have that authentication information passed to an external vendor, allowing the user at home to utilize the application from home after being authenticated. So, it's user at site A, authenticating with site B, and the user at site A using the application (after authentiation) at site C. Sorry for being long winded, but everything there screams MITM to me. I am probably missing something easy.
(Apologies if this is duped - originally sent 4.22.08) Every internet app is susceptible to MITM without some form of strong mutual authentication. User issues with certificates are well documented. Seems to be the best way to do this is to do the mutual authentication between the user (site a) and the application (site C) which then proxies the authentication request to your ldap server (Site B) over an SSL encrypted link. If you perform the mutual authentication at your site (B), then you would tunnel the access to the app on C to avoid a MITM there. You could probably do some form of federation, but I assuming that would be too complex. HTH, Nick -- Nick Owen WiKID Systems, Inc. 404.962.8983 http://www.wikidsystems.com Commercial/Open Source Two-Factor Authentication irc.freenode.net: #wikid
Current thread:
- Authentication question & problem evilwon12 (Apr 22)
- Re: Authentication question & proble Shreyas Zare (Apr 22)
- Re: Authentication question & problem Tremaine Lea (Apr 22)
- RE: Authentication question & problem Sheldon Malm (Apr 22)
- Re: Authentication question & proble Yousef Syed (Apr 23)
- Re: Authentication question & problem Nick Owen (Apr 25)