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Network segmentation and filtering practices within the classification level
Technical cyber security
Network security

Network segmentation and filtering practices within the classification level

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Task description

Network segmentation and filtering practices within the classification level

The zoning and filtering provisions of the communication network shall be implemented in accordance with the principle of multi-level protection.

The division of the communication network within a given security class into separate network areas (zones and segments) may mean, for example, appropriate workstation and server separation from a data protection point of view, also covering possible project-specific separation needs.

The requirement can be met by the following measures:

  • The communication network is divided into separate network areas (zones, segments) within the security class.
  • Traffic between the network areas is restricted and traffic entering the environment is subject to the default-deny rule.
  • The data processing environment is prepared for common network attacks.

Requirements connected to the task

TEK-02: Tietoliikenne-verkon vyöhykkeistäminen
Julkri: TL IV-I

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requirements

Examples of other requirements this task affects

5.2.7: Network management
TISAX
14.5.10.b): Prieigos kontrolė
NIS2 Lithuania
PR.IR-01: Unauthorized access to networks and environments
NIST 2.0
Članak 30.1.e: Sigurnost u nabavi, razvoju i održavanju mrežnih i informacijskih sustava
NIS2 Croatia
3.1.8: Säkrade lösningar för kommunikation
NIS2 Sweden
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Detailed procedures for the management, control and segmentation of networks
System hardening through minimization of active services
Critical
High
Normal
Low
Network security
2
requirements

Examples of other requirements this task affects

TEK-10.1: Järjestelmäkovennus - käytössä olevien palveluiden minimointi
Julkri
I-08: PRINCIPLE OF MINIMALITY AND OF LEAST PRIVILEGE - SYSTEMS HARDENING
Katakri 2020
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System hardening through minimization of active services
Monitoring configurations
Critical
High
Normal
Low
Network security
10
requirements

Examples of other requirements this task affects

8.9: Configuration management
ISO 27001
1.2.4: Definition of responsibilities with service providers
TISAX
DE.CM-7: Monitoring for unauthorized personnel, connections, devices, and software is performed.
CyberFundamentals
2.5.1: Control data flow between network zones
NSM ICT-SP
2.3.5: Verify that activated security configurations comply with the organisation’s approved security configurations
NSM ICT-SP
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Monitoring configurations

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