What is a potential risk when configuring a non-routing dual-homed host?

A non-routing dual-homed host is a system configured with two network interfaces connected to different networks, allowing for some redundancy or separation of traffic. However, the security and functionality of this setup depend heavily on how the firewall rules are established and maintained.

Since the host has two connections, improper configuration can lead to vulnerabilities where traffic could flow between the networks in unintended ways. For instance, if the firewall rules are not carefully tailored, malicious traffic might bypass security controls and gain access to sensitive areas of the network. Additionally, there are different access controls or restrictions that need to be applied based on which interface the traffic is entering or exiting. This makes the firewall configuration critical to securing the dual-homed host; a lapse in following proper procedures could lead to significant security issues.

Thus, the potential risk highlighted in this context emphasizes the importance of careful firewall management in ensuring the host remains protected while leveraging its dual-homed architecture.