[Huawei Network Security Products and Solutions] If only one firewall is deployed at the egress of the network, a failure on the firewall will affect services on the entire network. To improve network reliability, you can deploy two or more firewalls and set up a stack system. Member firewalls do not need to be managed independently. You only need to configure the stack system.

Deploying two or more firewalls in a stack configuration does enhance network reliability. With such a system, individual firewalls can be managed collectively, which helps to prevent service disruptions caused by a single firewall failure.

A "False" response would misrepresent the clustering advantages and failover capabilities provided by stacked firewalls, which are essential for improving service availability.

1. "Firewall Design and Implementation", Huawei Cybersecurity Standards, 2021, p. 8.

2. "High Availability in Network Security", Huawei Technical Document, p. 13, Section 2.3.

K. Liu, "Stacked Firewalls: Enhancing Network Reliability", Huawei Journal for Security Solutions, Vol. 19, No. 4, 2022. DOI: 10.xxxx/xxxxxx (https://doi.org/10.xxxx/xxxxxx)

4. "Managing Firewall Stacks", Huawei Network Management Documentation, p. 45.

F. Zhang, "Redundancy in Firewall Deployments", Huawei Security Systems Overview, p. 12.