SonicWall Firewall Topology Explained | Inside, Outside, DMZ, NAT &Access Rule
In this video on CyberSecure with Lakshman, we break down a complete SonicWall firewall topology and explain how real-world networks are designed and secured.
You will learn:
✅ Inside vs Outside vs DMZ network explained
✅ Internal network segmentation
✅ Source NAT (SNAT) step-by-step
✅ Destination NAT (DNAT / Port Forwarding)
✅ Internet traffic flow through firewall
✅ LAN to WAN access rules
✅ WAN to LAN security policies
✅ Best practices for firewall configuration
This lab demonstrates how traffic moves from:
Internal LAN (172.16.200.0/24)
Customer network (192.168.204.0/24)
To the Internet via WAN interface
If you are preparing for:
CCNA / CCNP Security
Firewall Administrator roles
SonicWall certification
Network security interviews
This video will help you clearly understand firewall zones, NAT policies, and access rules in a practical way.
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