What is the main advantage that a network-based IDS/IPS system has over a host-based solution?

A NIDS/NIPS operates on dedicated hardware or network sensors that are independent of the hosts being monitored, meaning it places zero resource burden on the protected systems. In contrast, a HIDS agent runs as an active process on each host, competing with user applications for CPU cycles, memory, and disk I/O.

While NIDS is positioned at network boundaries to capture all passing traffic, this is not its main advantage over HIDS because HIDS can also inspect all traffic on its own host and can even analyze encrypted payloads that NIDS cannot.

NIDS solutions typically require more complex installation and configuration than host-based agents, which are straightforward software installs on individual machines, making this claim factually incorrect.

Not interfering with user interfaces is not a meaningful differentiating advantage, as HIDS agents also run as background services and do not directly interact with the user interface.