In today’s economy, choosing the right cybersecurity security tools can make or break a company’s finances.

Ransomware cost global companies around $1 billion in 2023. Data breaches cost companies $4.45 million on average, while DDoS attack victims lose around $500,000 each. 

The thing is, robust firewalls and antivirus coverage can protect companies against most malware attacks. Filtering traffic and efficiently getting rid of malware agents deters attackers and renders them harmless.

Despite this, many companies rely on ineffective and outdated security solutions. Don’t be like them. Act now to avoid becoming part of next year’s cybersecurity statistics.

This blog will explain the functions of firewalls and antivirus software and help you choose the right security tools. We will dive a little deeper, too, exploring how to update your cloud security posture. Let’s start at the network edge with an introduction to firewall technology.

What is a firewall?

Firewall devices protect network security by filtering incoming and outgoing traffic.

Firewalls inspect data and apply rules to determine whether data is legitimate or malicious. If packets pass security rules, data is allowed to enter or leave. If not, data is denied or discarded and cannot compromise security.

Traditional firewalls come in software and hardware forms. Hardware firewalls operate as separate devices between external networks and local devices. On the other hand, firewall software uses agents or modules on network endpoints.

Hardware firewalls tend to handle large amounts of traffic efficiently, but coverage is limited to nearby devices. Software firewalls move with devices. They suit remote workers but may compromise device performance.

Traditional firewalls employ two main inspection techniques:

• Packet filtering—assesses surface packet data, including source and destination IP addresses, protocol types, and ports.

• A stateful inspection—evaluates the state of active connections to determine whether they meet network rules.

Next-generation firewall services go beyond traditional features.

NGFWs include deep packet inspection and Intrusion Prevention Systems (IPS). These features enable NGFWs to analyze the contents of data packets, something not possible in traditional packet filtering.

These extra features guard against complex threats like DDoS attacks, extending firewall capabilities from simple filtering to active threat prevention.

Recently, Cloud firewall services have also emerged. These firewalls reside in the cloud and operate on a firewall-as-a-service (FWaaS) model.

Cloud firewalls protect cloud deployments and scale as companies add new cloud applications or data capacity. They also ensure consistent access control and data filtering across hybrid and multi-cloud environments.

What are antivirus tools?

Companies install antivirus software on network endpoints, where it analyzes traffic to identify and block cyber threats. When it identifies malware or other suspicious agents, antivirus software quarantines and neutralizes threats, keeping network assets safe.

Antivirus solutions typically use signature analysis to detect known threats.

Researchers identify new worms, viruses, or malware. They extract a unique identifier from each agent based on file attributes, byte sequences, or malware behavior. They then send information about this signature to antivirus tools.

Antivirus software compares traffic signatures to threat databases. Software blocks signatures that match. Security tools may quarantine or delete malware, depending on local security settings and the severity of the threat.

Some antivirus software also uses heuristic methods to identify threats.

Heuristic systems track file or user behavior and flag suspicious activity that does not match known profiles. More advanced antivirus software uses machine learning to understand network environments, tailoring detection to specific contexts.

As with firewalls, antivirus software has also entered the cloud. Cloud-native antivirus tools scan virtual machines and cloud-hosted data. They integrate with popular cloud platforms and scale with deployments – complementing on-premises security tools.

Key differences between firewall and antivirus software

When comparing firewalls vs antivirus software, the main difference is simple: firewalls filter traffic at the network edge. Antivirus software identifies and neutralizes threats on network endpoints.

However, the two security technologies have many other differences. Understanding where they differ is important when building functional security systems. Below is a handy summary.

Functionality

• Firewalls: Scan traffic entering and leaving networks to block harmful traffic.

• Antivirus: Scan files on network endpoints. They protect against internal threats, including malware or worms.

Scope

• Firewalls: Operate at the network level via packet filtering and protocol analysis. Can extend Saas or IaaS deployments via cloud firewalls.

• Antivirus: Works at the application or system level. It scans files and communications between devices.

Threat detection

• Firewalls: Rules define what traffic is permitted. Uses packet filtering and stateful inspection to block external threats and malicious traffic.

• Antivirus: Analyzes files on devices to find malicious programs. Identifies threats via malware signatures and heuristic analysis.

Implementation

• Firewalls: Implemented at the network edge to filter incoming and outgoing traffic.

• Antivirus: Installed on computer systems and other endpoints connected to the network.

Performance impact

• Firewalls: Minimal impact on system performance. Minor effects on network latency.

• Antivirus: Real-time and scheduled system scans can impact device performance.

Cost

• Firewalls: Tend to be cost-effective, especially basic firewalls included with operating systems. Costs rise for high-maintenance enterprise-level implementations.

• Antivirus: Subscription costs rise with protection requirements. Add-ons like VPNs and identity theft measures raise costs further.

Updates and maintenance

• Firewalls: Companies must update rules to reflect security needs. Security teams must monitor traffic, test rules, and ensure compatibility with network applications.

• Antivirus: Less burdensome as automated updates deliver virus definitions and patches. Security teams may need to schedule scans and manage quarantined files.

Compatibility with other security tools

• Firewalls: Must integrate with the local Intrusion Prevention System and Virtual Private Network tools.

• Antivirus: Sometimes, antivirus conflicts with existing endpoint security tools. These conflicts may lead to false positives or consume more system resources.

Effectiveness

• Firewalls: Good at blocking cyber threats at the network edge, including cloud deployments. Ineffective at dealing with malware within the network.

• Antivirus: Detects, identifies, and neutralizes malicious software. Scans must cover all endpoints to work effectively.

Similarities between firewalls and antivirus tools

Despite the differences listed above, firewalls and antivirus software are closely related. Understanding their similarities helps when choosing the correct security solution. Similarities include:

• Fundamental goal. Both tools protect networks against external threats. They filter or block malicious agents, ensuring smooth performance and protecting critical data.

• Changing techniques. Antivirus software and firewalls are evolving to meet new challenges. For instance, both come in cloud-native versions to defend virtualized assets.

• Network monitoring. Firewalls monitor network traffic to prevent unauthorized entry or exit, and antivirus programs actively monitor internal threats.

• Customization. Companies can set firewall rules to suit their operations, and users can customize antivirus coverage with scheduling, alerts, and exclusion lists.

• Compliance roles. Firewalls and antivirus software are critical tools to ensure compliance with data security regulations.

Should your business choose a firewall or antivirus?

Until recently, answering this question was simple. Companies needed both, as traditional antivirus tools and firewalls performed complementary network security functions.

However, the choice is not as simple as it once was. Security solutions featuring both firewall and antivirus protection are becoming ever more popular.

In the past, firewalls operated as a barrier between untrusted external networks and local assets. Antivirus software operated locally, scanning for malicious software. Firewalls deal with network-level attacks, while antivirus systems operate at the application or system level.

Firewalls created a first line of defense. Antivirus software allowed layered defense, dealing with malware that crossed the network edge. In that situation, it often made sense for companies to source separate firewall and antivirus protection.

Things have changed. Next-generation firewall systems have narrowed the differences between the two technologies. The familiar firewall vs antivirus comparison is unhelpful when antivirus firewalls offer a single solution.

Cloud coverage is also something to consider. Next-generation cloud firewalls deliver flexible security in cloud environments. Access control is a critical challenge when securing cloud assets, potentially making cloud firewalls more attractive than cloud-hosted antivirus software.

How NordLayer can enhance your network security

Robust cybersecurity is a must for any business. Cyber threats can expose confidential data and take systems offline in seconds, with catastrophic consequences.

Firewalls and antivirus software are two of the most effective cybersecurity tools. Even so, choosing the wrong tools will leave systems exposed. Outdated protection is almost as risky as no protection at all.

NordLayer’s Cloud Firewall (FWaaS) is the perfect solution.

Our cloud-hosted security tools create a watertight barrier around your cloud infrastructure. Our firewall lets you control who accesses assets by defining teams and members. You can also determine how users connect by granting access to various end-points.

NordLayer’s cloud firewall adds control and security that complements our virtual private gateways—bringing hybrid cloud networks under your security framework.

Update your firewall technology today.

The revised Network and Information Systems Directive (NIS2) signifies the European Union’s strengthened commitment to enhancing cybersecurity measures across the region. Scheduled to take effect in October 2024, NIS2 broadens the scope of its predecessor, the original NIS Directive from 2016. It imposes stricter requirements to elevate the overall information security and posture in Europe.

As a cornerstone of the digital economy, Software-as-a-Service (SaaS) providers must thoroughly examine the implications of NIS2 and take timely action to ensure compliance.

What is the NIS2 Directive? 

NIS2 is designed to build upon the foundation laid by the original NIS Directive. It aims to foster greater collaboration between entities and harmonize cybersecurity standards across all European Union member states. At its core, NIS2 emphasizes a risk-based approach, proactive monitoring, and corporate accountability.

The directive introduces more stringent reporting obligations, enforcement measures, and management training requirements. Non-compliance with NIS2 can result in substantial fines of up to €10 million or 2% of global turnover, whichever is higher.

These penalties underscore the importance of adhering to the directive’s mandates and prioritizing cybersecurity.

Who does NIS2 apply to?

The NIS2 Directive targets “essential” and “important” entities operating within critical sectors such as digital infrastructure, healthcare, energy, and transport. This comprehensive scope extends to many SaaS providers, even if they do not have a physical presence within the European Union, as long as they offer digital services to EU customers.

Given the nature of SaaS models, which typically involve handling sensitive data and ensuring continuous availability, these providers are significantly affected by NIS2’s risk management measures and business continuity planning provisions. As remote work trends increase reliance on cloud-based solutions, SaaS providers need to understand and address the potential implications of NIS2 implementation.

NIS2 for SaaS: its scope and impact

Due to its expanded scope and rigorous requirements, NIS2 will substantially impact SaaS providers. The Directive mandates that providers implement comprehensive risk management measures, including regular risk analysis and continuous monitoring, to detect and mitigate cyber threats. Providers must also establish robust incident response procedures to address any security incidents swiftly.

NIS2 enforces stricter reporting obligations, requiring SaaS providers to promptly notify relevant authorities and customers during a significant cyber incident. This enhances transparency, trust, and accountability within the digital ecosystem.

Additionally, NIS2 emphasizes the importance of cybersecurity training and awareness programs for management and staff. SaaS providers must invest in ongoing education to ensure their teams are prepared to handle evolving cyber threats and maintain compliance with the directive.

Why NIS2 compliance matters

Ensuring compliance with NIS2 is not just about avoiding penalties; it is a critical step toward enhancing your SaaS operations’ overall security and resilience. Here are key reasons why compliance with the European Directive is vital:

• Protects sensitive data. SaaS providers often manage large volumes of sensitive and personal data. Compliance with NIS2 helps protect this data against cyber threats, reducing the risk of data breaches and the associated financial and reputational damage.

• Maintains customer trust. Customers expect their data to be handled securely. By complying with NIS2, SaaS providers demonstrate a commitment to high standards of information security, thereby maintaining and potentially increasing customer trust and loyalty.

• Avoids financial penalties. Non-compliance with NIS2 can result in hefty fines. Ensuring compliance helps avoid significant financial penalties and their negative impact on your business.

• Enhances competitive advantage. In a market where information security is a significant concern, compliance with NIS2 can provide a competitive edge. SaaS providers prioritizing compliance can differentiate themselves by offering more secure and reliable services.

• Ensures business continuity. NIS2 mandates robust risk management measures and incident response procedures. By adhering to these requirements, SaaS providers can minimize downtime and ensure continuous service availability, which is crucial for maintaining operations and customer satisfaction.

• Strengthens corporate accountability. NIS2 emphasizes the role of senior management in cybersecurity. Compliance ensures that executives know their responsibilities and actively manage and mitigate cyber risks, leading to better governance and oversight.

• Mitigates supply chain risks. With NIS2’s focus on the supply chain, compliance ensures that all third-party services and partners adhere to high-security standards. This reduces the risk of vulnerabilities introduced through external parties.

• Aligns with global standards. As information security threats become increasingly global, aligning with the NIS2 Directive positions SaaS providers to meet international security standards, facilitating smoother operations across different regions and markets.

Compliance with NIS2 is a proactive measure that goes beyond regulatory obligations. Building a robust, secure, and trustworthy digital infrastructure that can withstand the constantly evolving cyber threats environment is essential.

By prioritizing compliance, SaaS providers safeguard their operations and contribute to enhancing cybersecurity across the European Union.

Challenges of the NIS2 Directive for SaaS providers

As SaaS providers prepare to implement NIS2, they may encounter several challenges that require careful planning and strategic action. Below there is a list of potential hurdles that providers should be aware of:

• Complex compliance requirements: Navigating the extensive and detailed requirements of NIS2 sectors can be challenging, especially for smaller SaaS providers with limited resources

• Enhanced reporting obligations: Meeting the directive’s stringent reporting requirements may require significant changes to existing processes and systems

• Increased costs: Implementing the necessary security measures and training programs can be costly, impacting the provider’s budget and resource allocation

• Risk management: Establishing effective risk management measures involves continuous monitoring, regular assessments, and timely updates to security protocols

• Corporate accountability: Ensuring that senior management is adequately trained and aware of their responsibilities under NIS2 can be demanding

• Data sovereignty & localization: Adhering to data sovereignty and localization requirements, especially for providers operating across multiple jurisdictions, adds another layer of complexity

• Supply chain vulnerabilities: Managing and securing the supply chain to ensure that all third-party services comply with NIS2 can be a daunting task

Prepare your SaaS for NIS2 compliance

To help SaaS providers navigate the complexities of NIS2 compliance, we have outlined a list of essential steps.

1. Conduct a comprehensive risk assessment

Perform a thorough risk analysis to identify potential vulnerabilities and threats within your network and information systems. Regularly update this assessment to reflect new risks and changes in the threat landscape.

2. Implement robust security measures

Ensure that your security measures align with NIS2 requirements, including Always-On VPN and Multi-Factor Authentication (MFA) for secure access, as well as dynamic firewalls and network segmentation to isolate environments and enforce least privileged access.

3. Establish incident response procedures

Develop and implement a robust incident response plan that includes procedures for detecting and responding to security incidents and clear communication protocols for notifying authorities and affected parties.

4. Invest in continuous monitoring

Utilize advanced monitoring tools such as cloud-delivered Intrusion Prevention Systems (IPS), Intrusion Detection Systems (IDS), and Web Application Firewalls (WAF) for continuous surveillance and protection.

5. Train management & staff

Provide regular cybersecurity training for management and staff to ensure their awareness of their responsibilities under NIS2 and their ability to respond effectively to cyber threats and security incidents.

6. Ensure data sovereignty & localization

Adhere to data sovereignty and localization requirements by using dedicated servers with fixed IP addresses to ensure data remains within the specified jurisdiction.

7. Engage expert compliance consultants

Consider partnering with compliance consultants to strategize and validate your NIS2 preparedness and ensure thorough attention to all aspects of the Directive.

Embracing the future of cybersecurity

As we move towards an increasingly digital future, the importance of robust cybersecurity cannot be overstated. Implementing NIS2 represents a significant transition in approaching security across the European Union, setting a new standard for resilience against cyber threats.

This directive is both a challenge and an opportunity for SaaS providers. By embracing NIS2’s requirements, providers protect their operations and build trust with their customers, enhance their competitive edge, and contribute to a safer digital ecosystem.

Compliance with NIS2 is more than a regulatory obligation; it is a commitment to excellence in cybersecurity. As cyber threats evolve, staying ahead requires proactive measures, continuous improvement, and a dedication to safeguarding data and infrastructure.

Take this opportunity to transform your SaaS business’ security practices, fortify your defenses, and create a secure digitalized environment.

How NordLayer can help

As a network security provider, NordLayer offers tools and services to help SaaS providers achieve NIS2 compliance by:

• Access control policies. Implement strong Network Access Control (NAC) policies using NordLayers Virtual Private Gateways with a dedicated IP address. Additionally, adopt advanced features like Cloud Firewall for granular network segmentation, and Device posture security to ensure only known and compliant devices can enter the company’s network. Elevate your network protection with multi-layered authentication methods such as 2FA (SMS & TOTP) and biometrics to access your network.

• Effective incident handling. Utilize threat prevention features like traffic encryption, IP masking, DNS filtering, and Always-On VPN to mitigate various threats that can infect your network. Improve threat detection with Device Posture Security and activity monitoring to maintain a resilient network infrastructure.

• Solid cryptography policies. Utilize NordLayer’s VPN gateways with quantum-safe encryption of data in transit. Provide a secure environment for browsing online and accessing sensitive resources or hybrid networks.

With NordLayer, SaaS providers can simplify infrastructure security management and demonstrate compliance with some of the stringent requirements of the NIS2 Directive.

Founded in 1997, Distilled emerged as a pioneering real estate platform designed to simplify the property search for buyers in Ireland. Over the years, the company expanded through acquisitions and partnerships, such as Daft.ie, DoneDeal.ie and Adverts.ie, and became part of the international group, Adevinta. Today, Distilled focuses on managing these major brands within Ireland, offering comprehensive real estate and classified advertisement services.

Being established in the 90s means that the technological stack is based on bespoke applications not fully compatible with all types of modern security platforms. The dedicated team had to manually configure, maintain, and upgrade the company’s physical infrastructure whether it was holidays, weekends, or after-hours. Transitioning to a modern company mindset, Distilled had to change its approach — IT Operations Manager Joe O’Brien shared how it happened.

The challenge

Complex infrastructure support for remote teams

As the global pandemic shifted work from office to home, Distilled faced significant challenges with their legacy applications, which were accessible only through an office IP address.

This setup granted employees access to essential systems, enabling productivity across dispersed locations. However, working with legacy applications required extra labor to support them, expanding the work scope for the IT team.

The situation called for a revision of the existing technology stack. It was necessary to exchange complex applications with solutions that are easy to use and don’t require hands-on presence. These changes enabled remote teams to access the company network securely.

The solution

Focus on a simple and secure solution

Distilled turned to NordLayer to address their connectivity and security challenges. By implementing NordLayer’s dedicated server option, the company secured a fixed IP address, simplifying remote access without the need for complex and unreliable VPN setups.

The integration with Distilled’s Identity and Access Management solution ensured that only company-managed devices could access these systems, enhancing overall security.

Distilled has a layered security strategy, one of which is based on fixed IP addresses to confirm and control user access. This way the IT team can coordinate permissions, manage employee accounts, and ensure that the company network is under a sufficient security layer.

Moreover, the company settled for 2 dedicated servers so they can rest assured that if the primary server goes down or is overloaded, the backup server will help maintain service levels unimpacted.

Why choose NordLayer

NordLayer was selected for its simplicity, reliability, and ease of integration. Unlike other solutions that required additional infrastructure, NordLayer offered a straightforward, out-of-the-box solution.

It allowed the IT team at Distilled to deploy a secure access system in minutes, significantly reducing the administrative overhead associated with managing traditional VPN solutions.

A hardware-free solution to securely connect to the company network

Distilled was looking for an easy way to give all their end users a single fixed IP address for the whole company. Other systems they looked at required adding additional infrastructure into their offices, which the team had to manage themselves. With NordLayer, it’s all included.

The outcome

Removing the complexity for the user and IT team

The adoption of NordLayer has led to a more flexible and secure remote working environment at Distilled. Employees now enjoy seamless access to critical applications without the hassles of a traditional VPN.

The solution has proven reliable, with no significant downtime reported, allowing the IT team to focus on more strategic tasks rather than maintaining complex network infrastructures.

Moreover, the IT Operations Manager got a lot of positive feedback from users that the app runs in the background, it doesn’t interfere with their work and he himself has nothing to worry about.

Pro cybersecurity tips

In cybersecurity, you have to know the drill. How to practise security, prevent data breaches, and stay out of the bad actors’ radar. To achieve it you don’t have to climb mountains, just be cautious and aware. Here are some tips on how Joe O’Brien, Distilled IT Operations Manager, practices security on a daily basis and you are welcome to join these activities.

Through strategic use of technology and a focus on security, Distilled has not only adapted to remote work challenges but has also positioned itself as a leader in using cybersecurity solutions to enhance business operations.