Device Security
Default-deny architecture, private networking, and unique credentials per device. Security that starts at the network layer, before traffic ever reaches the public internet.
Connected devices are exposed by default
Most IoT devices ship with factory default credentials, connect directly to the public internet, and share a single login across the entire hardware platform. Every device is a potential entry point.
- Factory default credentials left in place across deployed fleets
- Devices exposed directly to the public internet
- Hardware platforms use a single shared login across all units
- No network-level isolation between device management and other traffic
Security architecture built into the network
SIMSY applies a default-deny architecture where no device traffic reaches the public internet unless explicitly permitted. Every device gets unique credentials, Cellular Private LAN keeps devices off the public internet, and URL locking restricts outbound access.
- Default-deny, no traffic reaches the public internet unless explicitly allowed
- Cellular Private LAN (CPL) keeps devices completely off the public internet
- Unique credentials per device, no shared passwords, no factory defaults
- URL locking restricts outbound access to approved destinations only
What the platform delivers
Default-deny Architecture
Every device starts with no internet access. Traffic is only permitted to explicitly approved destinations. This eliminates the risk of devices being accessed from the public internet or reaching unauthorised endpoints.
Private Network
Devices connect through SIMSY's private network infrastructure. Traffic never touches the public internet. No VPN required, no public IP addresses, no exposure to internet-facing threats.
Cellular Private LAN
CPL creates a private network between your SIM-connected devices. Devices can communicate with each other and with your infrastructure without any traffic crossing the public internet.
Unique Credentials Per Device
Every device receives unique authentication credentials at provisioning time. No factory defaults, no shared passwords across the fleet, no single point of compromise.
URL Locking
Restrict device outbound access to approved URLs only. Devices can only communicate with the endpoints you explicitly permit, everything else is blocked at the network level.
Multi-APN Isolation
Run multiple isolated logical networks on a single SIM. Separate management traffic from application traffic, isolate payment data, or create dedicated channels for different functions.
Before and after SIMSY
What this means for your operation
Frequently asked questions
Default-deny means every device starts with no internet access at all. Traffic is only allowed to destinations you explicitly approve. This is the opposite of the typical approach where devices have full internet access and you try to block known threats.
CPL creates a private network between your SIM-connected devices at the network infrastructure level. Devices get private IP addresses and can communicate with each other and your systems without any traffic crossing the public internet. No VPN software is needed.
Yes. SIMSY provides remote CLI access and secure remote management through the platform. You can access your devices from any browser without exposing them to the public internet.
URL locking restricts outbound traffic from each device to a whitelist of approved destinations. If a device is compromised, it cannot communicate with any endpoint that you have not explicitly approved, blocking command-and-control traffic and data exfiltration.
Ready to secure your fleet?
Talk to us about applying default-deny security architecture to your connected devices. Security built into the network from day one.