Server Hardening

Strengthen your Linux servers with proactive security hardening designed to reduce vulnerabilities and protect critical infrastructure.

Every Linux server should be hardened before it's placed into production. AcuNett applies proven security best practices to reduce attack surfaces, strengthen system defenses, and help protect your servers from unauthorized access and emerging threats.

Secure Linux Server Hardening

Cyber threats continue to evolve, making server security more important than ever. A properly hardened Linux server is less vulnerable to attacks, unauthorized access, and common security risks that can lead to downtime or data loss.

Our engineers follow proven security best practices to secure your Linux environment, including service optimization, firewall configuration, user and permission management, SSH hardening, patch management, and system security enhancements tailored to your infrastructure.

For more than 25 years, businesses have trusted AcuNett to protect mission-critical Linux infrastructure. Whether you're deploying a new server or strengthening an existing environment, we help ensure your systems are built on a secure foundation.

Quick Facts

Best For	New deployments, production servers, security-conscious organizations
Engagement	Consultation & Implementation
Platforms	Dedicated, VPS, Cloud
OS	AlmaLinux, Ubuntu, Rocky, Debian, RHEL
Scope	Customized to Your Environment

Frequently Asked Questions

What is Linux server hardening?

Linux server hardening is the process of securing a server by reducing vulnerabilities and implementing security best practices. This includes disabling unnecessary services, strengthening authentication, configuring firewalls, applying security updates, and optimizing system settings to better protect against attacks.

Why is server hardening important?

Every server connected to the internet is a potential target for cyber threats. Hardening helps reduce the attack surface, improve system security, and lower the risk of unauthorized access, malware, and other security incidents.

Can you harden an existing Linux server?

Yes. We can perform a security review of your existing server and implement hardening measures without requiring you to rebuild your environment. Our recommendations are tailored to your specific applications and operational requirements.

Will server hardening affect my applications?

Our goal is to improve security while maintaining compatibility with your applications and services. Before making significant changes, we review your environment and implement hardening measures using proven best practices to minimize disruption.

How often should a server be hardened?

Server hardening should be performed whenever a new server is deployed and reviewed regularly as part of ongoing server management. As new vulnerabilities and security best practices emerge, periodic updates help ensure your environment remains protected.

What operating systems do you support?

We specialize in Linux and support a wide range of modern distributions, including AlmaLinux, Rocky Linux, Ubuntu Server, Debian, Red Hat Enterprise Linux (RHEL), and Fedora. If your environment uses a different Linux distribution, contact us—we likely have experience supporting it as well.

Trusted by Clients Around the World

For more than 25 years, businesses have relied on AcuNett to keep their Linux infrastructure secure, stable, and running at peak performance.

Todd A.

Server Management, Dedicated Server

I have been with AcuNett for almost 7 years. We first started using them as server support for servers we hosted elsewhere. Their service was so great that when we needed a new server we decided to try their server hosting services. With their excellent service and pricing it wasn't long before we migrated all servers to be hosted by AcuNett. AcuNett is more than a hosting provider and server management provider, they are a support driven company that is truly dedicated to finding the best solutions for your issues. They go far beyond the scope of their SLAs to make sure any issues are resolved. They have pretty much become our IT department. The people we go to when we are having server issues and don't know where to start.

Dan Connaghan

Server Management, Dedicated Server

My name Dan Connaghan, and I own and operate a web hosting and design company called The Big Brain which started in 2001. As my company grew, we required dedicated servers and Acunett was prompt, professional and took care of all the necessary tech. Ronny’s staff are very knowledgeable and quick to respond to support inquires. Acunett has taken the headaches out of the day to day server maintenance and allowed me to focus on my business not on the severs. I would recommend Acunett for both Shared and dedicated server services and their Full Managed Servers is the only way to go. They are at the top of their game and we are so glad we found a trusting, ethical and skilled WH provider. Ronny Fang, my hats off to you and I appreciate all the work your staff does. Keep up the great work!

Mario Dorizas

Server Management

Great Service We have used AcuNett for the past 6 years to service and maintain multiple shared hosting servers. We find them to be efficient, reliable and cost effective. I fully recommend them.

Paula Oliveira

Server Management, Dedicated Server

My name is Paula Oliveira. I run a WH/Domain Reg. business average in size. I`ve been working since 2002 and met Ronny Fang from Acunett about five years ago. Acunett takes care of more than 1.5 thousand of my webhosting clients, split into their managed Linux servers. Past results and ongoing experience could not be any better. My appraisal of a WH providers focuses on three aspects: (a) Are they morally sensitive? (b) Do they have the proper skills? (c) Do they manage to setup an enviroment, and keep it running, so that their skills are delivered in an optimum performance under their moral guidance? (d) Are they apt to work on adverse circunstances - when a more severe problem comes into stage - with the same nice sway they perform ordinary support - that is, moral binding and skills remain as high or higher when they are in the Emergency Room? Concerning Acunett, I`d say: (a), (b), (c) and (d) YES!

Robert

Server Management

My business has worked with AcuNett for our website hosting and server management projects for 4 years. AcuNett's team is always very responsive, and the owner, Ronny Fang, really knows his stuff when it comes to server management and hardware. I highly recommend them!

Anthony Serrano

Server Management, Dedicated Server

In the years I've been using them, they have always replied in a timely manner and have always went far behind the call of duty to help me solve any issue that ever came about. Their service really does give you the peace of mind to sleep at night, knowing that if at any point your server was to go offline.. they'll be on it within minutes. I really can't express my appreciation for the quality of service they provide while still being extremely affordable. Definitely plan on staying here for the years to come. Thank you Ronny and staff for your patience, understanding, and support!!

David

Server Management

Ordered this morning and straight away was stunned. AcuNett server management is amazing, response time is great and knowledge extremely high. If you are looking for server management these are the people to go with!! Although it is pricey, it is well worth it. I'd recommend this to anyway who fears their server is insecure. The ETA on the fortified setup that I purchased is 3 hours which is nothing. Recommended to absolute everyone!

Robert Perry Broz Moran

Dedicated Server

Been Acunett since 1997. I have been using Acunett hosting since 1997 and wound'nt change if you paid me. Great prices great service and wonderful and helpfull support.

Richard E.

Server Management

AcuNett has the best service. Period. I've never got this type of service from any other company. I'm always surprised at how quick and easy their technical service answers my questions. They always go out of their way to help a non-tech, like me. I highly suggest them!

Massimo Maggi

ServerSync

I've been a customer for their ServerSync service for years.Their responses to tickets are very fast and I've never seen a "prepackaged" response, only focused and competent ones. Also to my requests about somewhat unusual configurations. When there was a little trouble on their side, I was refunded with extra space and free contract extension. They are a serious and reliable company.