The ALG must reveal error messages only to the ISSO, ISSM, and SCA.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-205028	SRG-NET-000402	SRG-NET-000402-ALG-000130	SV-205028r396459_rule	2024-12-04	2

Description
Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can give configuration details about the network element. Limiting access to system logs and administrative consoles to authorized personnel will help to mitigate this risk. However, user feedback and error messages should also be restricted by type and content in accordance with security best practices (e.g., ICMP messages).

Description

Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can give configuration details about the network element. Limiting access to system logs and administrative consoles to authorized personnel will help to mitigate this risk. However, user feedback and error messages should also be restricted by type and content in accordance with security best practices (e.g., ICMP messages).

ℹ️ Check
Verify the ALG reveals error messages only to the ISSO, ISSM, and SCA. If the ALG does not reveal error messages only to the ISSO, ISSM, and SCA, this is a finding.

✔️ Fix
Configure the ALG to reveal error messages only to the ISSO, ISSM, and SCA.