Eric has discovered a fantastic package of tools named Dsniff on the Internet. He has learnt to use these tools in his lab and is now ready for real world exploitation. He was able to effectively inte

'Interceptor' is a generic term that describes the action, but 'Man-in-the-middle' is the specific and recognized name for this type of attack.

This scenario precisely describes a man-in-the-middle (MITM) attack, where an attacker secretly intercepts and relays messages between two parties who believe they are communicating directly with each other. The ability to 'intercept communications,' 'establish credentials with both sides,' and have 'the two remote ends never notice that Eric is relaying the information' are all hallmarks of a MITM attack.

An ARP Proxy (or ARP Spoofing) is a common *method* to achieve a man-in-the-middle position on a local network, but it is not the name of the overarching attack described.

'Poisoning Attack' is too broad; while ARP poisoning or DNS poisoning can be used to facilitate a MITM, the entire described activity is a MITM attack itself, not just poisoning.