How to Spot ARP Spoofing on the Security+ Exam

ARP spoofing is how an attacker on a local network slips into the middle of a conversation. It works for one simple reason: the Address Resolution Protocol has no authentication, so a device will believe a forged reply that claims the router's IP belongs to the attacker's MAC. From there, the victim's traffic quietly detours through the attacker — the on-path position.
This video gives you the one mental model — ARP trusts anyone, so the attacker lies about which MAC owns an IP — then the fingerprints the exam uses: forged ARP replies mapping a gateway IP to the wrong MAC, an ARP table showing a duplicate or unexpected MAC, the fact that it only works on the local subnet, and the on-path payoffs it enables. We separate ARP spoofing from DNS poisoning, MAC flooding, and evil twin access points by asking what got lied about or overwhelmed, and finish with the defenses the exam asks about — dynamic ARP inspection with DHCP snooping, static ARP entries, port security, segmentation, and encryption that protects the data even if it is intercepted. A rapid-fire drill locks it in.
By the end you will recognize ARP spoofing on sight and reach for the right switch-based defense.
Free Security+ study resources: https://kandibrian.com
Subscribe for the full Security+ series working through every domain the same way.
#SecurityPlus #SY0701 #CompTIA #ARPSpoofing #CyberSecurity

Видео How to Spot ARP Spoofing on the Security+ Exam канала Kandi Brian