In the modern security industry, the integrity of your communication systems is paramount. For professionals operating in the UK to hostile environments, a breach in network security can have dire consequences. At Secure MedComm, we are dedicated to providing secure, robust communication systems, and that includes empowering our clients with the knowledge to maintain the highest levels of security.
This post will cover essential network security best practices to ensure your team can communicate with absolute confidence.
1. Implement Strong Access Control
The first line of defence in network security is controlling who has access to your systems. This is especially critical when dealing with sensitive information and real-time operational data, such as that provided by the Android Tactical Assault Kit (ATAK).
- Use Strong, Unique Passwords: Every user should have a complex password that is not used across multiple systems. A password manager can help in generating and storing these passwords securely.
- Multi-Factor Authentication (MFA): Wherever possible, enable MFA. This adds an extra layer of security by requiring a second form of verification, such as a code sent to a mobile device, in addition to a password.
- Principle of Least Privilege: Users should only have access to the information and systems that are absolutely necessary for their role. This minimizes the potential damage if an account is compromised.
A Case Study from the Field:
Our operational experience has shown us how failures in basic access control can lead to mission-critical incidents. We witnessed a scenario on a deployment in Africa where a partner force lost an ATAK device to an adversary. Due to weak password policies and the absence of MFA, the adversary successfully accessed the device. This gave them a live, real-time feed of friendly force movements, compromising the entire operation and creating a direct threat to life.
- Utilise Mobile Device Management (MDM): The scenario described above highlights the need for another critical layer of security. An MDM solution allows a central administrator to enforce security policies—such as mandating strong passwords and MFA—across all deployed devices. Crucially, if a device is lost or compromised, most MDM platforms provide the ability to remotely locate, lock, or completely wipe the device, providing an essential last line of defence.
2. Keep Your Systems Updated
Software vulnerabilities are a common entry point for attackers. Developers are constantly releasing patches and updates to address these weaknesses.
- Regularly Update Software and Firmware: This includes operating systems, applications, and the firmware on your radio and IT hardware. Automated patch management can help ensure that updates are applied in a timely manner.
- Stay Informed About New Threats: Keep an eye on security news and advisories related to the systems you use. This will help you to be proactive in addressing potential vulnerabilities.
3. Secure Your Network Infrastructure
The hardware that forms the backbone of your communication systems needs to be secured both physically and digitally.
- Firewalls: A properly configured firewall is essential for controlling incoming and outgoing network traffic, blocking unauthorized access while permitting legitimate communications.
- Secure Wi-Fi Networks: If you use Wi-Fi, ensure it is encrypted with WPA3, the latest security protocol. Hide your network's name (SSID) and use a strong password.
- Virtual Private Networks (VPNs): When accessing your network remotely, always use a VPN. A VPN creates a secure, encrypted tunnel for your data, protecting it from being intercepted on public networks.
4. Continuous Monitoring and Training
Network security is not a "set it and forget it" task. It requires ongoing vigilance and a well-trained team.
- Network Monitoring: Implement systems to monitor for suspicious activity on your network. This can help you to detect and respond to threats before they cause significant damage.
- Specialist Training: As part of our service offering, Secure MedComm provides comprehensive training on all supplied systems. It is crucial that your team understands not only how to use the equipment but also the security protocols that go along with it. Regular training on topics like phishing, social engineering, and secure data handling is vital.
Bonus Tip: The Physical Layer is Your Foundation 🛡️
All the advanced digital security in the world can be undermined if an adversary can simply walk up to your hardware. Physical security is the foundation upon which your network security is built. An attacker with physical access to your TAKServer, network switch, or router can bypass many digital defences to intercept data or disable your systems entirely.
Think of it as having the world's best digital lock on your front door but leaving a window open around the back. Key practices include:
- Secure the Hub: Your critical infrastructure—servers, gateways, and networking equipment—must be located in a physically secure, access-controlled room or container.
- Control Entry: Implement and enforce strict access control. Use logs, key cards, or biometric scanners to ensure only authorized personnel can access sensitive areas.
- The Human Firewall: Your team is a critical part of your physical security. Train all personnel to be vigilant and to feel empowered to challenge or report any unfamiliar individuals seen near sensitive equipment or in restricted areas.
Conclusion
For security professionals, a secure and resilient communication network is not a luxury—it is a necessity. By implementing these best practices, both digital and physical, you can significantly enhance your operational capability and the safety of your team. At Secure MedComm, we are committed to providing the tools and expertise to help you achieve this.