Скачать или смотреть Stop DHCP Attacks with DHCP Snooping on Cisco Switch Full Step-by-Step Lab | CCNA Security Tutorial

📌 YouTube Video Description:
Protect your network from rogue DHCP servers with DHCP Snooping on Cisco switches! 🚫 In this step-by-step lab tutorial, I’ll show you how to enable and configure DHCP Snooping to secure your Layer 2 environment.

1. Enable DHCP Snooping globally
Switch(config)# ip dhcp snooping

2. Enable DHCP Snooping on VLAN 10
Switch(config)# ip dhcp snooping vlan 10

3. Trust the port that connects to the real DHCP server
Switch(config)# interface GigabitEthernet0/1
Switch(config-if)# ip dhcp snooping trust

4. Limit DHCP packets on access ports
Switch(config)# interface range GigabitEthernet0/2 - 24
Switch(config-if-range)# ip dhcp snooping limit rate 5

This limits clients to 5 DHCP packets per second — helps block DHCP starvation attacks.

5. Enable database for DHCP bindings
Switch(config)# ip dhcp snooping database flash:dhcp_snoop.db

🧪 Verification Commands
Show DHCP snooping status:
Switch# show ip dhcp snooping

Show trusted interfaces:
Switch# show ip dhcp snooping trust

Show DHCP snooping binding database:
Switch# show ip dhcp snooping binding




Whether you're studying for your CCNA or working on a real-world Cisco lab setup, this video will guide you through:

✅ What DHCP Snooping does and why it matters
✅ How to enable it globally and per VLAN
✅ How to trust the right ports (and untrust others)
✅ How to limit DHCP traffic to prevent starvation attacks
✅ How to view and verify DHCP Snooping bindings

Perfect for home labs, Cisco Packet Tracer, or GNS3 simulations. Master this essential network security feature and stop attackers from assigning fake IP addresses on your LAN!

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