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Before establishing a local, remote, and/or network connection with any endpoint device, the Cisco ISE must use a bidirectional authentication mechanism configured with a FIPS-validated Advanced Encryption Standard (AES) cipher block algorithm to authenticate with the endpoint device. This is required for compliance with C2C Step 1.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-242604CSCO-NC-000300SV-242604r971529_ruleCCI-001967medium
Description
Bidirectional authentication provides stronger safeguards to validate the identity of other devices for connections that are of greater risk. Currently, DoD requires the use of AES for bidirectional authentication since it is the only FIPS-validated AES cipher block algorithm. Because of the challenges of applying this requirement on a large scale, organizations are encouraged to apply the requirement only to those limited number (and type) of devices that truly need to support this capability.
STIGDate
Cisco ISE NAC Security Technical Implementation Guide2026-06-03

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-04Identification & Authentication for Devices
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (49) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-17(10)Authenticate Remote Commands
1.00
AC-17(2)Protection of Confidentiality and Integrity Using Encryption
1.00
AC-18(1)Authentication and Encryption
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-4(17)Domain Authentication
1.00
AC-7Unsuccessful Logon Attempts
1.00
AU-8Time Stamps
1.00

+39 more (top 10 by confidence shown)

CCI1 mapping
CCI-001967
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 4 hops (3) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

PR.AA-01
0.50
PR.AA-03
0.50
PR.AA-05
0.50

Details

Check Text (C-242604r971529_chk)

If DoD is not at C2C Step 1 or higher, this is not a finding. From the Web Admin portal: 1. Navigate to Administration >> System >> Settings >> Security Settings. 2. Ensure "Allow TLS1.0", "Allow TLS1.1", and "Allow legacy unsafe TLS renegotiation for ISE as a client" are unchecked. If TLS 1.0 or 1.1 is enabled, this is a finding.

Fix Text (F-45836r714121_fix)

From the Web Admin portal: 1. Navigate to Administration >> System >> Settings >> Security Settings. 2. Ensure "Allow TLS1.0", "Allow TLS1.1", and "Allow legacy unsafe TLS renegotiation for ISE as a client" are unchecked.