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Network Infrastructure Magazine | Friday, January 06, 2023
Security teams and other entities can limit network security vulnerabilities by replacing traditional measures for emerging practices.
FREMONT, CA: Security solutions are platforms and tools that assist in securing computer networks and preventing cyberattacks. Various solutions utilize varying technologies to prevent unauthorized persons or entities from infiltrating a network.
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Network security solutions can focus on protecting the perimeter from the outside, while others restrict activity inside the network to protect it from the inside. Organizations can prevent, identify, block, and remediate a variety of network threats, including insider threats, with advanced solutions that provide visibility and control over network traffic.
Maintaining network security with ease of use and business continuity requirements is challenging. Compliance with industry standards and regulations may require organizations to select and combine several solutions.
The following network security best practices can limit breaches and secure network connections.
Next-Generation Firewalls (NGFW):
Firewalls are traditionally configured to perform a stateful inspection at layers three and four of the open systems interconnection (OSI) network model. An access control system examines the destination and source IP addresses, as well as the protocol and port of data packets, to determine whether to grant or deny access to them.
In the OSI network model, NGFWs operate at application layer seven. The network analyzes packets and blocks them according to the application's destination by performing deep packet inspections (DPIs).
Network Access Control (NAC): As a security control in a traditional network perimeter, where managed devices are the only ones that can access the system from an office location, NAC has proven to be effective. Compared to a modern IT environment with remote access, personal devices, and public cloud resources, the NAC is less suitable since these external resources cannot be controlled because they need to be visible to the NAC.
Remote Access VPN: It is possible to maintain the integrity and privacy of sensitive data using a remote access VPN. Multi-factor authentication (MFA) and data encryption are common authentication mechanisms. Modern distributed IT environments do not consider VPN secure since they allow access to the entire network without granular control.
Zero Trust Network Access (ZTNA): ZTNA uses MFA and endpoint compliance scanning to verify user identity when users connect to the network. ZTNA considers factors such as time, location, device, and other parameters to determine whether the action should be allowed. A ZTNA administrator defines access rules, and ZTNA implements them by vetting all connection requests. The advantage of this approach is that sensitive information and systems are not vulnerable to unnecessary risk, and the network's risk is minimal.
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