Secure Serial-to-Ethernet for the Needs of Today and Tomorrow

Legendary Reliability Fortified With IEC 62443-4-2 Security

What is an NPort (Serial Device Server)?

Serial Device(RS-232/485)
Serial
NPort
Ethernet
Edge Network(Monitoring)

NPorts (serial device servers) connect your mission-critical serial equipment to an Ethernet network, giving you real-time access to PLCs, meters, and sensors from anywhere. But connectivity alone is no longer enough—today’s industrial networks demand security, efficiency, and compliance as baseline requirements, not optional extras.

You are hereSerial Device ServersNPort G2 Series
Need Modbus to Ethernet?Protocol GatewaysMGate G2 Series Need Serial to USB?USB-to-SerialUPort G2 Series

Why Choose NPort G2?

The standard for connectivity has evolved. Security, efficiency, and compliance are no longer optional.

A Long-term Commitment to Your Edge

Secure your mission-critical networks for the long run. Powered by our self-developed ASIC, the NPort G2 Series minimizes supply-chain risks to guarantee lasting availability.

Discover Our Promise →

See NPort G2 Series in Action

Stop Guessing, Start Fixing With NPort and MGate G2’s Web-based Console

Field engineers know the frustration: a device goes down, you're on-site with no tools and no visibility. The NPort and MGate G2's built-in Web Console changes that. Access full diagnostics from any browser — no software needed. One-click Diagnostics pinpoints the issue instantly. One click exports a complete system log. Stop guessing, start fixing. Go home on time.

Is Your Edge Network Secure? See How NPort and MGate G2 Handle All 7 Checks

Is your industrial edge network truly secure? There are seven things every OT network needs to get right. In this video, see how the NPort and MGate G2 checks every box — from password policies and Secure Boot, to encryption, access control, event logging, and centralized authentication. Move from critical risk to operational confidence.

Check Your Connectivity Readiness

Benchmark your current device security against industry standards and estimate the potential value of modernization.

Edge Security Assessment

How defensible is your edge? Evaluate vulnerabilities in your current setup.

1. Login Security

Can anyone log in to your devices using default account and passwords (like "admin" or "1234") and get full access permissions?

Requirement: Forced Credential Update & Role-based Authorization
2. Serial Data Encryption

Is the data traveling between your serial device and the network readable by anyone with a wiretap?

Requirement: Encryption / Authentication / Certificate
3. Access Control

Can any random computer on the network connect to your critical serial devices?

Requirement: IP Whitelisting / Access Control List (ACL) / Service Disable
4. Antitampering

If a hacker installs fake firmware on your device, will the device refuse to run it?

Requirement: Secure Boot/Hardware Root of Trust
5. Digital Footprints

If someone changes a setting or reboots a device at 3 AM, will you have a record of who did it?

Requirement: System Log / Incident Logging / Timestamp
6. Mass Management

Do you have a central way to manage user accounts and event logs, or do you manage these device-by-device?

Requirement: RADIUS, TACACS+ / Remote Syslog / RFC format
7. Security Updates

Have your devices received any security patches or firmware updates in the last 24 months?

Requirement: Vendor vulnerability management

Disclaimer: This Edge Security Assessment (the “Tool”) is a self-assessment tool provided by Moxa for informational purposes only. It maps common security best practices to device capabilities but does not constitute a comprehensive security audit or penetration test. A “Good” score does not guarantee immunity from cyberattacks or compliance with any regulations, nor does a “Critical” score imply a breach has occurred. The recommendations provided are based on Moxa’s product specifications and IEC 62443-4-2 standard. The actual security posture depends on proper configuration, network architecture, and organizational policies. The results and recommendations do not constitute professional security, technical, or legal advice. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE TOOL IS PROVIDED “AS IS” WITHOUT ANY WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED. MOXA DOES NOT WARRANT THAT THE TOOL WILL BE ERROR-FREE, ACCURATE, COMPLETE, OR UNINTERRUPTED. WE SPECIFICALLY DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL MOXA BE LIABLE FOR ANY DIRECT, INDIRECT, PUNITIVE, INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR IN ANY WAY CONNECTED WITH THE USE OF THIS TOOL, INCLUDING BUT NOT LIMITED TO LOSS OF DATA, SYSTEM DOWNTIME, OR FINANCIAL LOSS RESULTING FROM SECURITY BREACHES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. You agree that Moxa may use anonymized and aggregated data derived from your inputs for internal research and marketing purposes. By using this Tool, you acknowledge your agreement with this disclaimer. If you do not agree, please do not use the Tool.
Risk Calculator
Assess your customer's edge security risk before starting a discussion. Enter your customer's details here.
*Est. based on Revenue & Industry profile
Conservative (20%) 30% Critical (60%)

Adjust inputs and click "Calculate Risk"
to see your economic exposure.
Maintenance Tax
Unmanaged Nodes: Conventional setups require device-by-device patching and troubleshooting.
5 Hrs/Year: Average time spent per device on manual maintenance tasks.
USD 60/hr: Average fully loaded cost for a skilled OT technician.
Formula: Unmanaged Nodes × 5 hrs × USD 60/hr
Formula: Unmanaged Nodes × 5 hrs × USD 60/hr
$0
Regulatory Exposure
As cybersecurity regulations tighten globally, your customers' unmanaged edge nodes expose them to significant compliance risks.
Regulatory Fines: Typically 1 to 4% of annual revenue depending on jurisdiction and sector.
Contractual Penalties: Breaches of service contracts triggered by security incidents.
Market Access: Import/export restrictions that could bar you from key markets.
Formula: Revenue × 2.5%
Annual Cyber Risk
ALE Model: Probabilistic annual loss estimate based on OT breach cost benchmarks.
OT Dependency: Higher dependency means greater financial impact per incident.
0.4%: Baseline breach probability for unpatched edge environments.
Formula: Revenue × OT Dependency % × Exposure Rate × 0.4%
Formula: Revenue × OT Dependency % × Exposure Rate × 0.4%
$0
Total Annual Exposure
$0
The potential cost to your customer if things went on unchanged.

Strengthen Your Edge Security Today

Show your customers how the NPort G2 reduces their maintenance overhead and their risk exposure.

View Products   Request Information

References

  1. Fortinet, 2024 State of Operational Technology and Cybersecurity Report
  2. Salary.com, Controls Systems Technician Salary Data (2025)
  3. PayScale, Control/Automation Technician Hourly Pay (2026)
  4. NIST SP 800-30, Guide for Conducting Risk Assessments
  5. ISO/IEC 27005, Information Security Risk Management
Disclaimer: This Risk Calculator (the “Tool”) is an estimation tool provided by Moxa for informational purposes only. The results are based on industry averages, hypothetical risk models, and user-provided inputs. “Unmanaged Node” counts are algorithmic estimates and may not reflect actual inventory. Actual financial impact varies significantly based on specific organizational structure, local regulations, and cybersecurity posture. These figures do not constitute a financial audit, legal advice, or a guarantee of future savings/losses. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE TOOL IS PROVIDED “AS IS” WITHOUT ANY WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED. MOXA DOES NOT WARRANT THAT THE TOOL WILL BE ERROR-FREE, ACCURATE, COMPLETE, OR UNINTERRUPTED. WE SPECIFICALLY DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL MOXA BE LIABLE FOR ANY DIRECT, INDIRECT, PUNITIVE, INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR IN ANY WAY CONNECTED WITH THE USE OF THIS TOOL, INCLUDING BUT NOT LIMITED TO LOSS OF DATA, SYSTEM DOWNTIME, OR FINANCIAL LOSS RESULTING FROM SECURITY BREACHES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. You agree that Moxa may use anonymized and aggregated data derived from your inputs for internal research and marketing purposes. By using this Tool, you acknowledge your agreement to this disclaimer. If you do not agree, please do not use the Tool.