Keeping your network secure can feel overwhelming. The threats keep evolving, and there is always something new to worry about, disturbing you from all the tasks your boss is requiring from you!

Security doesn't have to feel overwhelming. While it is not always simple, it doesn't have to be overly complicated either. By focusing on actionable steps, you can create a stronger defense and make your network far less vulnerable to attackers.

At ALE we are continuously in touch with network admins like you with tools and insights to build a safer environment. But no matter how advanced the technology, the basics matter most. Let’s dive into some straightforward tips you can start using today.

1. Stay on Top of Updates

Why it’s important: Outdated software is like leaving your front door unlocked – it’s an open invitation.

What you can do:

1. Set a schedule to regularly update routers, switches, and other devices.
2. Subscribe to security alerts from vendors (ALE advisory updates is available here).
3. Automate updates where possible so nothing slips through the cracks.

➡️Our recently added Fleet Supervision tool enables users to get visibility on their support service status and will be enriched soon with software version status and notification when an update is available.

2. Keep Hardware Off-Limits

Why it’s important: If someone gets physical access to your hardware, they can bypass your best security efforts.

What are your options:

1. Lock up your equipment in secure rooms or cabinets.
2. Use keycards or biometric scanners to control access.
3. Check access logs regularly to make sure only authorized people have entry.

3. Strengthen Those Passwords

Why it’s important: Weak passwords are still one of the easiest ways for attackers to get in.

What actions you can take:

1. Use long, complex passwords with a mix of characters.
2. Turn on multi-factor authentication (MFA) for extra protection.
3. Try password managers to keep track of those long, tricky passwords.

4. Divide and Conquer Your Network

Why it’s important: If an attacker gets in, network segmentation can stop them from roaming freely.

What can be implemented:

1. Segment the network (VLANs, SPB, MPLS, EVPN…) to separate critical systems from everyday traffic.
2. Set up firewalls to manage traffic between segments.
3. Limit user access to only what they need to do their jobs.

5. Educate Your Team

Why it’s important: Human mistakes, like falling for phishing emails, are a huge security risk.

What possibilities you have:

1. Run regular training sessions to keep security top of mind.
2. Use phishing simulations to teach your team what to watch out for.
3. Create an easy process to report potential security issues.

6. Keep an Eye on Things

Why it’s important: Spotting unusual activity early can stop a small problem from becoming a big disaster.

What to aim for:

1. Use monitoring tools like ALE’s OmniVista Network management platform to monitor traffic and detect anything strange.
2. Set up alerts for things like failed login attempts or unexpected traffic spikes.
3. Regularly review logs and check security settings. ALE OmniVista Network Advisor AIOps solution might help here! The solution detects any issues on the network and warn IT team offering instant remediation to the problem. You can even integrate it with third party such as firewall and create custom rules to detect something unusual on the network.

7. Ditch the Defaults

Why it’s important: Default settings on devices are often publicly known–and easy for attackers to exploit.

What you can -should- do:

1. Change all default usernames and passwords during setup.
2. Turn off unnecessary services or features you’re not using.
3. Use secure protocols like SSH and HTTPS for remote management.

8. Don’t Forget Backups

Why it’s important: If something goes wrong, backups can save the day – and even more!.

What steps you should consider:

1. Follow the 3-2-1 rule: three copies of your data, two different storage types, one offsite.
2. Test your backups regularly to make sure they work.
3. Encrypt your backups, especially if they’re stored offsite.

9. Secure Your IoT Devices

Why it’s important: IoT devices can be a weak link if left unsecured.

What options you have:

1. Track all IoT devices on your network with profiling tools.
2. Put them on their own network segment to keep them isolated.
3. Update firmware regularly and change factory-default credentials.

10. Be Ready for the Worst

Why it’s important: A well-prepared response plan can make a big difference during a breach.

What you can do:

• Create a clear incident response plan and document it.
• Run practice drills with your team so everyone knows their role.
• Assign specific responsibilities for handling different types of incidents.

Summary

Building a secure network isn’t about doing everything at once – it’s about taking small, consistent steps. Start with these 10 tips, and you will create a stronger foundation to protect your organization from threats.

This article is based on an original article by Alcatel-Lucent

📌 You can read the Network Infrastructure Guidelines Tech Brief which highlights best practices and recommendations when talking network security.

💡 Adventus Solutions leverages Alcatel-Lucent’s security technologies to protect your networks, as well as your employees’ and customers’ data. Stay secure with Adventus Solutions and Alcatel-Lucent Enterprise!