Cisco Secure Access Control System (ACS) 5.5 is a legacy AAA (Authentication, Authorization, and Accounting) platform. Because it has reached its and End of Support (EoS) , obtaining the ISO and maintaining the system requires specific legacy procedures. 1. Downloading the ACS 5.5 ISO
Some organizations maintain older hardware or specialized labs (like EVE-NG or GNS3 ) that rely on the lightweight footprint of ACS 5.x. cisco acs 55 iso download updated