SAS ITWhy VLAN Segmentation Matters
Without VLANs, one compromised endpoint can move laterally to cameras, phones, and sometimes servers. Segmentation is one of the highest-value network fixes for SMEs.
Recommended VLAN Plan
| VLAN ID | Purpose |
|---|---|
| 10 | Corporate devices |
| 20 | Network management |
| 30 | Guest WiFi |
| 40 | CCTV and IoT |
| 50 | VoIP |
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+## Safe Deployment Sequence
1. Create VLAN networks in controller
2. Define DHCP scopes per VLAN
3. Create SSIDs mapped to VLANs
4. Update switch port profiles
5. Apply firewall inter-VLAN rules
6. Migrate one department first
7. Validate printing, internet, and VoIP
Minimum Firewall Rules
- Guest VLAN -> internet only
- IoT/CCTV VLAN -> block access to corporate VLAN
- Corporate VLAN -> allow required access to servers only
- Management VLAN -> admin-only access
Post-Change Validation
| Test | Expected Result |
|---|---|
| Guest user ping corporate PC | Blocked |
| Corporate user internet access | Allowed |
| Camera stream to NVR | Allowed |
| VoIP registration | Successful |
+*Related: Networking & Security Dubai | Commercial CCTV Installation Dubai*
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About the Author
Written by the SAS IT Team — the same engineers who design, install, and support the networking, security, and infrastructure work described on this site. SAS IT Services was founded on 22 February 2020 in Dubai and has since delivered 500+ projects for businesses across the UAE.
We are a certified technology partner for Fortinet, Cisco, and Microsoft, among 17 documented vendor partnerships spanning networking, cybersecurity, CCTV, and cloud infrastructure — credentials that inform the technical guidance in our articles.
Our work is independently rated 5.0 out of 5 from 17 verified Google Reviews. Every article is reviewed internally for technical accuracy before publishing and reflects practices we apply on real client deployments in Dubai and the UAE.
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