Ethical Hacking

Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package.
Computer Forensics Training at InfoSec Institute

Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors.




Network Security Security-Basics
[Top] [All Lists]

Re: Dynamically assign a computer in a VLAN

Subject: Re: Dynamically assign a computer in a VLAN
Date: 21 Apr 2005 09:03:13 -0000
In-Reply-To: <42666534.9080803@laposte.net>

Hi 

  This can be done using Cisco's IBNS (Identity Based Networking Services) 
concept. The same works based on user-name and password. Assume three 
components - the Client (a Laptop/ Desktop etc), a Switch and an Access Control 
Server (ACS). The Switch has a Radius Client and the ACS is a "Cisco ACS3.x" 
RADIUS Server. You configure the policies and Authorization parameters on the 
ACS (and can even link the same to ADS). 

When the Client logs into the Workstation, the client is asked to pass his 
authentication credentials - the credentials could include his user name and 
password/ additionally, digital certificates etc. 
The Primary concept behind this is EAP based authentication (using AAA server) 
and AAA based authorization. 

Two points to remember............MAC address cannot be a criteria in assigning 
one to a VLAN. Second, as of my knowledge, this will now restrict you to a 
Cisco only solution. We have implemented this for a BPO where agents (as they 
are called) can use any Desktop and based on their user credentials are 
automatically put into the respective VLAN. The Cisco ACS and Switch interact 
to automatically put the port into that VLAN. Such a functionality is available 
only for specific Cisco Switches

If MAC address is critical for you then get onto trying to put MAC based 
filters manually (manually is a critical word here) on the Switch. My knowledge 
says VMPS (assuming you still have such a setup)cannot be used with IBNS - 
someone can correct me if I am wrong on this point 

Additionally, if you could expand on what you call a trusted VLAN...... Hope 
this helps

Shankar

Hi everyone,

We want to assign dynamically a Workstation or Laptop in a "trusted"  
VLAN, after authentication based on username, password and mac address.
I know we can assign a computer to a VLAN with its mac address with 
VMPS. Can RADIUS or TACACS do the same, added with username/password 
authentication ?

Thanks all for your answers.

Mathieu Rinck


<Prev in Thread] Current Thread [Next in Thread>