Remote Device Management via VZW MVPN Configuration Guide¶

1. Document Information¶

Product Model: IR305 (also applicable to other IR devices, including IR302 and IR315)
Firmware Version: V1.0.118
Applicable Scenario: Industrial device networking, medical device networking, self-service terminal networking, POS/cash register networking, etc.
Document Date: April 5, 2026

2. Router Overview¶

2.1 Product Introduction¶

The InRouter305 (IR305) is an industrial-grade cellular router designed for IoT applications. It supports multiple WAN connection types including 4G LTE, and provides stable, secure communication for multi-site deployments. The IR305 is suitable for scenarios where multiple remote devices need to communicate with each other through a shared network backbone.

2.2 Key Features¶

Supports multiple routers within the same LAN for mutual terminal access
Supports DMZ (Demilitarized Zone) configuration for traffic forwarding
Supports remote configuration, diagnostics, and firmware upgrade
Industrial-grade design for unattended environments

2.3 Typical Application Topology¶

Network Topology

Multiple routers are connected to the same upstream network. Each router has a downstream server or terminal device. All downstream devices need to access each other using the router WAN IP.

3. Hardware Description¶

3.1 Interfaces¶

Power: DC 9–36V, with reverse polarity and overcurrent protection
Network ports: 5 x 10/100Mbps fast Ethernet port, RJ45，WAN/LAN/VLAN port, 1.5KV network isolation transformer protection
Wireless: 4G LTE
LED Indicator: PWR, SYS, Wi-Fi, NET
Reset button: Restores factory default settings

3.2 Interface Description¶

WAN: Upstream network interface (connected to shared LAN or cellular)
LAN: Downstream interface (connected to local terminal devices)
Antenna Connector: 4G ：SMA x 1; Wi-Fi ：RP-SMA x 2; GPS(Optional): SMA x 1 (Note：For the North America models: 2 x SMA 4G antenna connectors; GPS models：1 x RP-SMA Wi-Fi antenna connector; 1 x SMA GPS antenna connector)

4. Factory Default Parameters¶

Default IP: 192.168.2.1
Subnet Mask: 255.255.255.0
Web Username: adm
Web Password: 123456 (some units use a random password — refer to the device label)

5. Pre-Configuration Requirements¶

Set your PC to the same subnet as the router LAN IP (gateway: 192.168.2.1)
Connect your PC to the router LAN port via Ethernet cable
Power on the router and wait for the Status indicator to turn on
Ensure a supported web browser is installed on your PC

6. Network Configuration¶

6.1 Background and Requirements¶

Multiple routers are deployed within the same Verizon SIM card (VZW MVPN). Each router has a downstream device (server, PLC, or terminal). The goal is for all downstream devices to access each other using the router's cellular WAN IP address.

Network address example:

Device	WAN IP	LAN IP	Downstream Device IP
IR305-1	192.168.11.1/24	192.168.2.1/24	192.168.2.2/24
IR305-2	192.168.11.2/24	192.168.2.1/24	192.168.2.2/24
IR305-N	192.168.11.N/24	192.168.2.1/24	192.168.2.2/24

6.2 Solution — DMZ Configuration¶

DMZ (Demilitarized Zone) forwards all inbound traffic on the WAN interface directly to a specified downstream host.

Configuration steps:

Log in to the router Web interface
Navigate to Firewall → DMZ
Check Enable DMZ
Set DMZ Host to the downstream device IP address (e.g., 192.168.2.2)
Leave Source Address Range empty to allow all sources
Set Interface to All WANs or the specific WAN interface in use
Click Apply to save

Network Topology

Configuration parameters:

Parameter	Description	Value Type	Default
DMZ Host	IP address of the host to place in the DMZ zone	IP Address	Empty
Source Address Range	Restrict forwarding to specific source IPs (optional)	IP Range	Empty
Interface	The upstream WAN interface to apply DMZ on	Interface	All WANs

Result: After configuration, any traffic reaching the router WAN IP will be forwarded directly to the DMZ host.

7. Verification¶

After applying the DMZ configuration, verify connectivity:

From the Server connected to IR305-1, open a browser and access http://192.168.11.2
If the page of the downstream device behind IR305-2 loads successfully, the configuration is working correctly
Repeat the test for other router WAN IPs to confirm all end devices are reachable

8. Troubleshooting¶

Cannot access the router's Web interface
Check that your PC is on the same subnet as the router LAN IP
Check the Ethernet cable connection
Try restoring factory defaults and retry
DMZ not forwarding traffic
Confirm the downstream device IP is correct and reachable from the router LAN
Confirm the Interface field is set to the correct WAN interface
Check if any firewall rules are blocking the traffic
Downstream devices cannot reach each other
Verify all routers are connected to Verizon's private network and get the IP address assigned
Confirm each router's cellular WAN IP is unique and reachable
Check that the downstream device is using the router LAN IP as its default gateway