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Blocking unnecessary types of files
Technical cyber security
Network security

Blocking unnecessary types of files

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Task description

Blocking unnecessary types of files

Email and download scanning protocols are configured to employ malware detection software, scanning all email attachments and downloads for threats while also blocking specific file types deemed unnecessary or risky.

Filtering and monitoring systems, such as firewalls and intrusion detection systems, are utilized to filter specific file types at the email gateway, preventing their transmission.

Measures aimed at blocking the download of confidential information on external networks can be adapted to stop certain file types from being received via email.

Requirements connected to the task

9.6: Block Unnecessary File Types
CIS 18 controls

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9.3 §: Tietojärjestelmien hankinta ja kehittäminen
Kyberturvallisuuslaki
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Defining standard templates for secure configurations
Configuration management and change log
Critical
High
Normal
Low
Network security
12
requirements

Examples of other requirements this task affects

8.9: Configuration management
ISO 27001
CC7.1: Procedures for monitoring changes to configurations
SOC 2
1.2.4: Definition of responsibilities with service providers
TISAX
PR.IP-3: Configuration change control processes are in place.
CyberFundamentals
DE.CM-7: Monitoring for unauthorized personnel, connections, devices, and software is performed.
CyberFundamentals
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Configuration management and change log
Isolate vulnerable and low-trust equipment
Critical
High
Normal
Low
Network security
1
requirements

Examples of other requirements this task affects

2.5.4: Isolate vulnerable and low-trust equipment
NSM ICT-SP
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Isolate vulnerable and low-trust equipment
Redundancy solutions for networks
Critical
High
Normal
Low
Network security
2
requirements

Examples of other requirements this task affects

5.3.2: Network device requirements
TISAX
PR.IR-04: Resource capacity
NIST 2.0
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Redundancy solutions for networks
Detailed procedures for the management, control and segmentation of networks
Critical
High
Normal
Low
Network security
7
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
Järjestelmien koventaminen käytössä olevien palveluiden minimoinnilla
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: VÄHIMMÄISTOIMINTOJEN JA VÄHIMPIEN OIKEUKSIEN PERIAATE – JÄRJESTELMÄKOVENNUS
Katakri 2020
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Järjestelmien koventaminen käytössä olevien palveluiden minimoinnilla
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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