Managed network security services can cover everything from firewall administration and secure WAN connectivity to continuous monitoring, incident response, cloud security, and network access controls. This overview focuses on companies that can take ongoing responsibility for important parts of network and security operations, while also showing the differences between engineering-led providers, dedicated MSSPs, and large global network operators.
Gilzor works primarily as a product engineering and software development company, with infrastructure, cloud, security, QA, and ongoing support forming part of its wider delivery model. Its technical stack includes AWS, Kubernetes, Docker, Ansible, CDN infrastructure, and other DevOps technologies used to operate production applications. For companies running software-heavy environments, Gilzor can therefore address network-security concerns in the broader context of production readiness, cloud architecture, reliability, and application security.
Its production-readiness work includes security assessments alongside reviews of scalability and reliability, making the company particularly relevant when security issues are connected to an application or cloud platform rather than a standalone corporate network.
A-listware combines managed IT, networking management, infrastructure support, NOC services, and cybersecurity within one service portfolio. Its managed security work includes vulnerability and security audits, penetration testing, security-program planning, and ongoing infrastructure protection. The infrastructure side extends into network maintenance, server administration, cloud management, and monitoring.
This combination makes A-listware relevant to organizations that prefer network operations and security management to remain with the same technical provider. It can support cloud and on-premises environments while covering operational concerns such as patching, vulnerability assessment, NOC monitoring, and security configuration.
MCK Network Solutions provides managed networking and cybersecurity services for organizations across the United States and Canada. Its network offering covers managed SD-WAN and SASE, while the security side includes NGFW, SIEM, EDR, managed SOC services, and continuous monitoring.
The company takes an integrated approach in which network traffic, endpoints, access points, and security events are managed as connected parts of the same environment. This can be practical for organizations with multiple locations or distributed users that do not want separate vendors responsible for connectivity and security. MCK also supports firewall, intrusion-detection, and VPN requirements within managed network deployments.
OSKI Solutions provides managed IT services covering applications, cloud infrastructure, databases, integrations, CI/CD pipelines, monitoring, security patching, incident response, and ongoing maintenance. Its model is engineering-led, so operational problems can move directly from detection into technical remediation without relying solely on a first-line help desk.
For network-security-related engagements, OSKI is most relevant where infrastructure protection is tied closely to AWS or Azure environments, cloud networking, platform operations, and application security. Its cybersecurity capabilities also include security audits, DevSecOps, penetration testing, and security consulting.
Edge7 Networks brings networking and security together under one managed-services team. Its networking portfolio includes SD-WAN, managed LAN, managed Wi-Fi, network access control, and circuit provisioning. Security services include SOC and SIEM, MDR, firewall management, SSE and ZTNA, identity management, and incident response.
The integrated model is especially relevant when network configuration and security policy regularly affect one another. Instead of maintaining separate providers for firewalls, WAN, LAN, and monitoring, customers can place those responsibilities with one team. Edge7 operates primarily across Ireland and the UK.
Network Box combines cybersecurity technology with fully managed security operations. Its portfolio covers secure SD-WAN, secure web gateways, unified threat management, web application firewalls, MDR, EDR, XDR, SIEM, email protection, and other controls managed through its SOC.
Because the company operates both the technology stack and the security service around it, customers can consolidate several network-security functions under one provider. Continuous monitoring, investigation, configuration changes, and security improvements form part of the service model, making it particularly relevant to organizations that want to reduce the number of separate security vendors they manage.
Verizon Business provides managed network and cloud security services for organizations with distributed, hybrid, and enterprise-scale infrastructure. Its managed networking portfolio covers WAN, LAN, wireless LAN, SD-WAN, and SD-Branch, while security options include SASE, managed security operations, DDoS protection, secure gateways, and network detection and response.
SASE Management is particularly relevant for organizations trying to manage networking and cloud security as one environment. It combines SD-WAN management with cloud security controls and integrates network operations centers with security operations capabilities.
FirstComm offers managed network security aimed at businesses that want firewall administration, threat protection, and network monitoring handled as an ongoing service. Its security capabilities cover next-generation firewalls, VPN, intrusion prevention, SSL inspection, malware protection, web filtering, and data-loss protection.
The service is also designed to improve visibility into network traffic and application use through monitoring and reporting. Remote device administration helps companies standardize security controls across multiple locations without maintaining every appliance internally.
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GLS operates as both an MSP and MSSP, managing network infrastructure and cybersecurity environments for geographically distributed organizations. Its services include deployment, ongoing management, reporting, network operations, and security operations, with support for technology from vendors including Cisco Meraki, Fortinet, Palo Alto Networks, Check Point, HPE Aruba, and Microsoft.
The company reports supporting managed devices across many countries and operates U.S.-based virtual NOC and SOC functions. This model suits organizations that already use several network and security vendors but want one operational layer managing them.
Open Systems focuses on managed secure networking, including SASE and firewall operations across SD-WAN, LAN, OT, and hybrid environments. Its firewall service provides continuous management and monitoring by Level 3 engineers, covering rule changes, remediation, and ongoing operational work.
The security platform can combine firewall services with ZTNA, secure web gateway, CASB, and email security. This makes the company relevant to organizations moving from appliance-based perimeter security toward a cloud-managed architecture that covers offices, remote users, operational technology, and internet access.
SecureOps provides managed firewall and infrastructure-security services with an emphasis on continuous protection and policy management. Its firewall work includes deployment, administration, maintenance, policy optimization, and managed SD-WAN.
The company provides around-the-clock operational support and SLA-based service delivery, which can help internal IT teams shift daily firewall and network-security responsibilities to an external security operation. It is particularly relevant where businesses already have firewall infrastructure but need ongoing management, security-policy maintenance, and monitoring instead of another technology replacement project.
21CENTURY.TECH is an AI-native software engineering studio focused on building, refactoring, testing, and deploying production applications. Senior engineers retain responsibility for architecture, code review, QA, security judgment, and final delivery, while AI tools are used to accelerate development and testing.
For network-security-related projects, its relevance is mainly at the software and deployment layer. The team can work with CI/CD, application infrastructure, technical architecture, and security considerations during production delivery. It is therefore a closer fit for organizations that need secure software engineering and infrastructure-aware development than for businesses looking specifically for a traditional managed firewall, SOC, or MDR provider.
GTT provides managed SD-WAN and secure networking services for distributed enterprise environments. Its managed SD-WAN model covers both network underlay and SD-WAN overlay, reducing the division of responsibility that often occurs when internet circuits and security or routing platforms come from different suppliers.
GTT handles deployment, network management, monitoring, and security-policy responsibilities as part of the service. Continuous monitoring is available around the clock, while enterprises can consolidate contracts, support, and operational responsibilities across their global network.
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SoftPro provides cloud development, infrastructure management, migrations, software engineering, and long-term platform support for businesses operating on AWS and Microsoft Azure. Its cloud work covers infrastructure from migration through ongoing management, with security treated as part of maintaining scalable and dependable production environments.
Within a managed network security context, SoftPro is better suited to companies whose security requirements are closely connected with cloud infrastructure, applications, and managed IT operations. Its delivery model can support infrastructure maintenance and security-oriented modernization without limiting the engagement to traditional firewall or network-appliance administration.
VPLS provides managed security services centered on firewall protection, SD-WAN, VPN connectivity, threat monitoring, and network operations. Its managed firewall service includes advanced threat protection together with continuous monitoring and alerting through an in-house NOC/SOC.
The firewall platform also supports IPsec and SSL VPNs, multi-factor authentication, and SD-WAN functionality. That mix makes VPLS relevant for businesses looking to secure remote users and multiple sites while keeping firewall configuration, connectivity, monitoring, and reporting under one managed service arrangement.
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.NET Developers works with enterprise software and cloud platforms across Azure, AWS, and Google Cloud, combining application engineering with cloud-native architecture, infrastructure-as-code, testing, deployment, and ongoing system evolution. Its delivery process includes security as part of production QA, while senior engineers retain responsibility for architecture and technical risk.
For managed network security projects, the company is most relevant where network and infrastructure protection forms part of a broader cloud or platform engineering engagement. It can support businesses building or modernizing cloud environments that require secure infrastructure configuration, deployment automation, and continued technical oversight rather than a standalone outsourced SOC.
Managed network security services cover a broad range of needs, from firewall administration and secure connectivity to cloud infrastructure protection, continuous monitoring, incident response, and network access management. The right provider depends largely on how much of the environment needs to be outsourced and whether security is closely tied to wider cloud, software, or infrastructure operations.
Some companies focus primarily on dedicated managed security and network operations, while others approach security as part of a broader managed IT, cloud, or engineering engagement. For businesses comparing providers, the most useful factors are the level of ongoing monitoring, supported infrastructure, security technologies, response capabilities, geographic coverage, and how clearly responsibilities are divided between the internal team and the service provider.
