https://blog.it-learn.io/tags/lan-security/Recent content in Lan-Security on it-learn.io | IT, Networking & Cybersecurity BlogHugoen-usSat, 02 May 2026 00:00:00 +0000https://blog.it-learn.io/posts/2026-05-02-arp-poisoning-intercepting-traffic-on-your-network/Sat, 02 May 2026 00:00:00 +0000https://blog.it-learn.io/posts/2026-05-02-arp-poisoning-intercepting-traffic-on-your-network/<p>Every device on a local network relies on ARP to function. Without it, a workstation cannot reach its default gateway; the gateway cannot deliver traffic to individual hosts. ARP is foundational infrastructure — which is precisely why poisoning it is so effective.</p> <p>When an attacker sends forged ARP Replies claiming to be the default gateway, every host on the segment begins forwarding their traffic to the attacker. When the attacker simultaneously claims to be each victim host in ARP packets sent to the gateway, the gateway forwards inbound traffic to the attacker as well. The result is a full bidirectional man-in-the-middle position with no exploits, no malware, and no network access beyond a single switched port.</p>