Design: Is It One Site or Two?
I thought I would share a quick tip: When you have Cisco Access Control Server (ACS) integrated with Microsoft Active Directory (AD), you can use an SSH session to a Cisco device to update your AD password.
You need to set the End User Authentication Settings for AD in ACS to Enable Password Change.
When you are first prompted for your AD password by a Cisco device, press the Return key. You will see a prompt for your old password, and then two prompts for your new password.
If you enter a new password twice, the session should look something like this:
~ cwr$ ssh -l creece 10.255.5.1 password: Enter old password: Enter new password: Enter new password confirmation: sw-01-dist#
This process also seems to work with Telnet, if your device allows Telnet access:
~ cwr$ telnet 10.255.5.1 Trying 10.255.5.1... Connected to sw-01-dist Escape character is '^]'. username: Kerberos: No default realm defined for Kerberos! creece password: Enter old password: Enter new password: Enter new password confirmation: sw-01-dist#
Note: I typically recommend that you do not allow Telnet access.
Note that ACS is really tied in with the AD rules – if you try a non-compliant password (such as too short or too recent previous password or other AD password issue), the password change attempt will fail. If you look on ACS, you will see why:
24411 Change password against Active Directory failed since user has a non-compliant password
I sometimes find this process helpful so I can update my AD password without logging into an AD domain device.
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Nick has over 20 years of experience in Security Operations and Security Sales. He is an avid student of cybersecurity and regularly engages with the Infosec community at events like BSides, RVASec, Derbycon and more. The son of an FBI forensics director, Nick holds a B.S. in Criminal Justice and is one of Cisco’s Fire Jumper Elite members. When he’s not working, he writes cyberpunk and punches aliens on his Playstation.
Virgilio “Bong” has sixteen years of professional experience in IT industry from academe, technical and customer support, pre-sales, post sales, project management, training and enablement. He has worked in Cisco Technical Assistance Center (TAC) as a member of the WAN and LAN Switching team. Bong now works for Tech Data as the Field Solutions Architect with a focus on Cisco Security and holds a few Cisco certifications including Fire Jumper Elite.
John is our CTO and the practice lead for a talented team of consultants focused on designing and delivering scalable and secure infrastructure solutions to customers across multiple industry verticals and technologies. Previously he has held several positions including Executive Director/Chief Architect for Global Network Services at JPMorgan Chase. In that capacity, he led a team managing network architecture and services. Prior to his role at JPMorgan Chase, John was a Distinguished Engineer at Cisco working across a number of verticals including Higher Education, Finance, Retail, Government, and Health Care.
He is an expert in working with groups to identify business needs, and align technology strategies to enable business strategies, building in agility and scalability to allow for future changes. John is experienced in the architecture and design of highly available, secure, network infrastructure and data centers, and has worked on projects worldwide. He has worked in both the business and regulatory environments for the design and deployment of complex IT infrastructures.