perinterface

Perinterface is a technical term primarily used in the context of computer networking and systems administration. It refers to a configuration or behavior that is applied on an individual basis to each network interface on a device, rather than as a global setting for the entire system.

This concept is crucial in network management, especially on multi-homed devices like servers or routers that possess more than one network interface card (NIC). By using a perinterface approach, an administrator can set distinct policies, rules, or parameters for each interface. For example, different firewall rules, routing table entries, or Quality of Service (QoS) settings can be assigned to the ethernet port, the Wi-Fi adapter, and a cellular modem independently. This allows for fine-grained control over how network traffic is handled, improving security and optimizing performance based on the specific role and trust level of each network connection.

The term can also be encountered in software development, particularly in object-oriented programming. In this domain, it might describe an implementation pattern where a class or module provides a separate, distinct interface for different types of clients or operations, effectively offering a tailored set of methods per interaction type.

In summary, perinterface denotes a methodology of applying settings or defining access on an interface-by-interface basis. Its main advantage is enabling precise and differentiated management for the various points of connection or interaction a system may have, leading to more robust, secure, and efficient configurations.