| Exam 300-115 | Question id=1482 | Infrastructure Security |
On which layer does IP source guard provide filtering to prevent a malicious host from impersonating the IP address of a legitimate host?
| A. |
Layer 1 | |
| B. |
Layer 2 | |
| C. |
Layer 3 | |
| D. |
Layer 7 |
IP Source Guard is a security feature that restricts IP traffic on untrusted Layer 2 ports by filtering traffic based on the DHCP snooping binding database or manually configured IP source bindings. This feature helps prevent IP spoofing attacks when a host tries to spoof and use the IP address of another host.