Network access restrictions can limit the exposure of systems that have expired vendor support and lack an immediate replacement, as they can prevent unauthorized or unnecessary access to those systems from other devices or networks. Network access restrictions can include firewalls, network segmentation, VPNs, access control lists, and other methods that can filter or block traffic based on predefined rules or policies. Network access restrictions can reduce the security risks introduced by running systems that have expired vendor support, as they can mitigate the impact of potential vulnerabilities or exploits that may affect those systems.
Verified References:
* CompTIA Security+ Certification Exam Objectives Version 3.0
https://www.comptia.jp/pdf/Security%2B%20SY0-601%20Exam%20Objectives.pdf (See Domain 2.1:
Given a scenario, implement secure protocols.)
* CompTIA Security+ SY0-501 Study Guide
https://www.certblaster.com/wp-content/uploads/2017/10/CompTIA-Security-SY0-501-Study-Guide.pdf (See Chapter 2: Technologies and Tools, Section 2.5: Firewall and Network Security Appliances.)