+Network Security Controls (NSC)

Network Security Controls (NSC)

Description

Mechanisms exist to develop, govern & update procedures to facilitate the implementation of Network Security Controls (NSC).

Possible Solutions & Considerations

Micro-Small Business (<10 staff) / BLS Firm Size Classes 1-2

∙ Basic firewall (home router or free pfSense)
∙ Network security policy

Small Business (10-49 staff) / BLS Firm Size Classes 3-4

∙ Small business firewall (e.g., Cisco Meraki, Fortinet FortiGate)
∙ Network security policy

Medium Business (50-249 staff) / BLS Firm Size Classes 5-6

∙ Next-gen firewall (NGFW)
∙ Network segmentation
∙ IDS/IPS
∙ Network security standards

Large Business (250-999 staff) / BLS Firm Size Classes 7-8

∙ Enterprise NGFW (e.g., Palo Alto Networks, Fortinet)
∙ Network security program
∙ IDS/IPS
∙ NAC

Enterprise (> 1,000 staff) / BLS Firm Size Class 9

∙ Enterprise NGFW with threat intelligence feeds
∙ Zero-trust network architecture
∙ SIEM integration
∙ NAC
∙ SD-WAN

SCR-CMM

Level 0 Not Performed

Practices are non-existent, based on the inability to demonstrate an implemented and operational capability. A reasonable person would conclude the control is not being performed.

Level 1 Performed Informally

Network Security (NET) domain capabilities are ad hoc and inconsistent. Capability criteria associated with this control may include:
▪ Policies, standards & procedures associated with NET domain capabilities provide limited coverage due to the depth and breadth of the existing documentation.
▪ Network security-related activities are decentralized (e.g., a localized/regionalized function) and uses non-standardized methods to implement secure, resilient and compliant practices.
▪ Administrative processes are used to configure boundary devices (e.g., firewalls and routers) to deny network traffic by default and allow network traffic by exception (e.g., deny all and permit by exception).
▪ Administrative processes enforce the use of human reviews for Access Control Lists (ACLs) and similar rulesets on a routine basis.
▪ Internet-facing technologies are governed no differently from internal network assets.
▪ Network communications containing sensitive/regulated data are protected using a cryptographic mechanism to prevent unauthorized disclosure of information while in transit (e.g., SSH, TLS and VPN).
▪ Wireless access is protected via secure authentication and encryption.

Level 2 Planned Tracked

Network Security (NET) capabilities are requirements-driven, but are not standardized across the entity (e.g., local/regional level consistency). Capability criteria associated with this control reasonably expect the following criteria to exist:
▪ Policies and standards associated with NET domain capabilities are formally documented and centrally-managed by the entity.
▪ Standardized Operating Procedures (SOP) associated with NET domain capabilities are documented and maintained by process owners.
▪ IT and/or cybersecurity personnel work with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with NET domain capabilities to address applicable statutory, regulatory and/or contractual requirements for Technology Assets, Applications, Services and/or Data (TAASD).
▪ Network security-related controls are primarily administrative and preventative in nature (e.g., policies, standards and procedures & guidelines).
▪ Network security management may be a defined function (e.g., team or department) or assigned as an additional duty to existing IT and/or cybersecurity personnel.
▪ IT personnel define secure networking practices to protect the Confidentiality, Integrity, Availability and Safety (CIAS) of the organization's TAASD.
▪ Secure Baseline Configurations (SBC) enforce the principles of least privileges and least functionality for boundary protection technologies.
▪ Network communications containing sensitive/regulated data use a cryptographic mechanism to prevent the unauthorized disclosure of information while in transit (e.g., SSH, TLS and VPN).

Level 3 Well Defined

Network Security (NET) capabilities are standardized across the entity for applicability to People, Processes, Technologies, Data and/or Facilities (PPTDF) to ensure consistency for Technology Assets, Applications, Services and/or Data (TAASD). Capability criteria associated with this control reasonably expect the following criteria to exist:
▪ Policies and standards associated with NET domain capabilities are formally documented and centrally-managed by the entity's Governance, Risk & Compliance (GRC) team, or similar function.
▪ Standardized Operating Procedures (SOP) associated with NET domain capabilities are well-documented and kept current by process owners.
▪ A network security management team, or similar function, is appropriately staffed and supported to implement and maintain NET domain capabilities.
▪ Technology is leveraged to enhance the efficiency and accuracy of network security operations (e.g., network management solution and log aggregator).
▪ The entity's Governance, Risk & Compliance (GRC) team, or similar function, works with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with NET domain capabilities to address Minimum Compliance Requirements (MCR) (e.g., applicable statutory, regulatory and/or contractual requirements) and Discretionary Security Requirements (DSR) (e.g., entity-required controls).
▪ Secure Baseline Configurations (SBC) enforce the principles of least privileges and least functionality for boundary protection technologies.
▪ An implemented and operational capability exists to develop, govern & update procedures to facilitate the implementation of Network Security Controls (NSC).

Level 4 Quantitatively Controlled

Network Security (NET) capabilities, in addition to being standardized across the entity and centrally managed to ensure consistency across Technology Assets, Applications, Services and/or Data (TAASD), efforts are metrics driven to provide sufficient insight for decision makers to predict optimal performance, ensure continued operations and/or identify areas for improvement. Capability criteria associated with this control reasonably expect the following criteria to exist:
▪ Applicable SCR-CMM Level 3 (Well Defined) capabilities are implemented and operational.
▪ Metrics reporting includes quantitative analysis of Key Performance Indicators (KPIs).
▪ Metrics reporting includes quantitative analysis of Key Risk Indicators (KRIs).
▪ Scope of metrics, KPIs and KRIs covers organization-wide cybersecurity and data protection controls, including functions performed by third-parties.
▪ Organizational leadership maintains a formal process to objectively review and respond to metrics, KPIs and KRIs (e.g., monthly or quarterly review).
▪ Based on metrics analysis, process improvement recommendations are submitted for review and are handled in accordance with change control processes.
▪ Business and technical stakeholders are involved in reviewing and approving proposed changes to evolve capabilities.

Level 5 Continuously Improving

Utilize SCR-CMM Level 3 or Level 4 (if available) criteria definitions:
▪ There are no defined Level 5 criteria, since it is reasonable to assume a continuously-improving process is not necessary to operationalize this control.
▪ Level 5 capabilities should be considered “world-class” where the control builds on Level 4 capabilities, but are continuously improving through Artificial Intelligence (AI) and/or Machine Learning (ML) technologies.
▪ While it may be possible to develop responsive capabilities for this control through the use of AI and/or ML technologies, the criteria would be organization-specific to define.

1. Apžvalga

1.1 Nuorodos

1.2 Nustatyti reikalavimai

1.3 Susiję teisės aktai

2. Nustatyti reikalavimai

Reikalavimai

3. Susiję teisės aktai

Teisės aktai
EULAW 13 straipsnis Tinklo saugumo valdymas

13 straipsnis

Tinklo saugumo valdymas

Finansų sektoriaus subjektai parengia, dokumentuoja, įgyvendina ir į savo tinklo apsaugos nuo įsibrovimo ir netinkamo duomenų naudojimo priemones įtraukia tinklo saugumo valdymo politiką, procedūras, protokolus ir priemones, apimančias visus šiuos elementus:

a) 

IRT sistemų ir tinklų atskyrimą ir segmentavimą atsižvelgiant į:

i) 

funkcijų, kurios palaikomos tomis IRT sistemomis ir tinklais, ypatingą svarbą ar svarbumą;

ii) 

klasifikaciją pagal Reglamento (ES) 2022/2554 8 straipsnio 1 dalį;

iii) 

bendrą IRT turto, kuris naudojasi tomis IRT sistemomis ir tinklais, rizikos profilį;

b) 

visų finansų sektoriaus subjekto tinklų ryšių ir duomenų srautų dokumentavimą;

c) 

atskiro skirtojo tinklo naudojimą IRT turtui administruoti;

d) 

tinklo prieigos kontrolės nustatymą ir įgyvendinimą siekiant neleisti prie finansų sektoriaus subjekto tinklo jungtis neturinčiam leidimo įrenginiui ar sistemai arba galiniam įrenginiui, neatitinkančiam finansų sektoriaus subjekto saugumo reikalavimų, ir aptikti tokio jungimosi atvejus;

e) 

tinklų ryšių, vykdomų per įmonių tinklus, viešuosius tinklus, namų ūkių tinklus, trečiųjų šalių tinklus ir belaidžius tinklus, užšifravimą, ryšių protokolų užšifravimą, atsižvelgiant į patvirtinto duomenų klasifikavimo rezultatus, IRT rizikos vertinimo rezultatus ir 6 straipsnio 2 dalyje nurodytų tinklų ryšių užšifravimą;

f) 

tinklų projektavimą pagal finansų sektoriaus subjekto nustatytus IRT saugumo reikalavimus, atsižvelgiant į pažangiausią praktiką, kad būtų užtikrintas tinklo konfidencialumas, vientisumas ir prieinamumas;

g) 

tinklo duomenų srauto tarp vidaus tinklų ir interneto bei kitų išorės jungčių saugumo užtikrinimą;

h) 

užkardos taisyklių ir ryšių filtrų nustatymo, įgyvendinimo, patvirtinimo, pakeitimo ir peržiūros vaidmenų, pareigų ir etapų nustatymą;

i) 

tinklo architektūros ir tinklo saugumo projekto peržiūrų atlikimą kartą per metus, o labai mažų įmonių – reguliariais intervalais, siekiant identifikuoti galimus pažeidžiamumus;

j) 

priemones potinkliams ir tinklo komponentams bei įrenginiams prireikus laikinai izoliuoti;

k) 

visų tinklo komponentų saugios bazinės konfigūracijos įgyvendinimą ir tinklo bei tinklo įrenginių atsparumo didinimą pagal pardavėjo nurodymus, taikytinus standartus, apibrėžtus Reglamento (ES) Nr. 1025/2012 2 straipsnio 1 punkte, ir pažangiausią praktiką;

l) 

procedūras, pagal kurias po nurodyto neaktyvumo laikotarpio sistemos ir nuotoliniai seansai apribojami, užrakinami ir nutraukiami;

m) 

dėl tinklo paslaugų susitarimų:

i) 

IRT ir informacijos saugumo priemonių, paslaugų lygių ir valdymo reikalavimų, taikomų visoms tinklo paslaugoms, nustatymą ir specifikacijas;

ii) 

tai, ar tas paslaugas tiekia grupės vidaus IRT paslaugų teikėjas, ar IRT paslaugas teikiančios trečiosios šalys.

Taikydami h punktą, finansų sektoriaus subjektai reguliariai peržiūri užkardos taisykles ir ryšių filtrus pagal susijusių IRT sistemų klasifikaciją pagal Reglamento (ES) 2022/2554 8 straipsnio 1 dalį ir bendrą IRT turto rizikos profilį. Finansų sektoriaus subjektai tikrina IRT sistemoms, kuriomis palaikomos ypatingos svarbos arba svarbios funkcijos, taikomų užkardos taisyklių ir ryšių filtrų tinkamumą bent kas šešis mėnesius.
EULAW 35 straipsnis Duomenų, sistemų ir tinklo saugumas

35 straipsnis

Duomenų, sistemų ir tinklo saugumas

Reglamento (ES) 2022/2554 16 straipsnio 1 dalyje nurodyti finansų sektoriaus subjektai parengia, įgyvendina ir į savo sistemas, protokolus ir priemones įtraukia apsaugos priemones, kuriomis užtikrinama tinklų apsauga nuo įsibrovimo bei netinkamo duomenų naudojimo ir išsaugomas duomenų prieinamumas, autentiškumas, vientisumas ir konfidencialumas. Visų pirma, atsižvelgdami į klasifikaciją pagal šio reglamento 30 straipsnio 1 dalį, finansų sektoriaus subjektai nustato šiuos elementus:

a) 

duomenų apsaugos jų saugojimo, perdavimo ir naudojimo metu priemonių identifikavimą ir įgyvendinimą;

b) 

apsaugos priemonių, susijusių su finansų sektoriaus subjekto duomenims persiųsti ir saugoti naudojama programine įranga, duomenų saugojimo laikmenomis, sistemomis ir galiniais įrenginiais, identifikavimą ir įgyvendinimą;

c) 

priemonių, kuriomis užkertamas kelias neteisėtam jungimuisi prie finansų sektoriaus subjekto tinklo ir apsaugomas tinklo duomenų srautas tarp finansų sektoriaus subjekto vidaus tinklų ir interneto bei kitų išorės jungčių, identifikavimą ir įgyvendinimą;

d) 

priemonių, kuriomis užtikrinamas duomenų prieinamumas, autentiškumas, vientisumas ir konfidencialumas perdavimo tinkle metu, identifikavimą ir įgyvendinimą;

e) 

patalpose laikomų ar išorėje saugomų duomenų, kurių finansų sektoriaus subjektui nebereikia rinkti ar saugoti, saugaus ištrynimo procesą;

f) 

patalpose laikomų ar išorėje saugomų duomenų saugojimo įrenginių, kuriuose įrašyta konfidenciali informacija, saugaus sunaikinimo procesą;

g) 

priemonių, kuriomis užtikrinama, kad nuotolinis darbas ir privačių galinių įrenginių naudojimas nedarytų neigiamo poveikio finansų sektoriaus subjekto gebėjimui vykdyti savo ypatingos svarbos veiklą tinkamai, saugiai ir laiku, identifikavimą ir įgyvendinimą.
EULAW 21 straipsnis Kibernetinio saugumo rizikos valdymo priemonės
-

Susietos užduotys

Saitai
is related to Annual
is related to relative Control Weighting = 09
is related to Technology
is related to Protect
is related to SCRM Focus Tier 3 TACTICAL
blocks Unauthorized Privilege Elevation
blocks Unauthorized Access
blocks Loss, Theft or Damage of Assets
blocks Unauthorized Retention / Inability to Dispose of Data
blocks Business / Service Interruption
blocks Data Loss / Integrity Compromise
blocks System / Data Compromise (Technical Vector)
blocks System / Data Compromise (Non-Technical Vector)
blocks Revenue Loss
blocks Contractual Default / Termination
blocks Loss of Competitive Advantage
blocks Reputational Harm / Loss of Stakeholder Trust
blocks Regulatory / Legal / Contractual Financial Liability
blocks Failure to Support Business / Mission Objectives
blocks Unaddressed Security / Compliance Exposure
blocks Uncontrolled Internal Security / Privacy Exposure
blocks Uncontrolled Third-Party Security / Privacy Exposure
blocks Lack of oversight of internal controls
blocks Lack of oversight of third-party controls
blocks Incident Response / Recovery Cost
blocks Third-Party Cybersecurity Compromise / Exposure
blocks Third-Party Physical Security Disruption / Exposure
blocks Sub-Tier / Fourth-Party Supply Chain Exposure
blocks Third-Party Legal / Compliance Exposure
blocks Harm from Unauthorized / Unintended Product or Service Use
blocks Third-Party Dependency Failure
is related to relative Control Weighting = 10
is related to Govern
is related to SCRM Focus Tier 1 STRATEGIC
is related to SCRM Focus Tier 2 OPERATIONAL
blocks Exposure from Unaddressed Vulnerabilities
blocks System / Service Compromise
blocks Loss of Authorization / Certification / License
blocks Unperformed / Unowned Control Responsibilities
blocks Inability to Demonstrate Due Diligence / Due Care
blocks Unreliable Assurance / Decision Information
blocks Undetected / Delayed Detection of Adverse Activity
blocks Lack of a security-minded workforce
blocks Loss of Confidentiality
blocks Loss of Data / Service Availability
blocks Drought & Water Shortage
blocks Earthquakes
blocks Fire & Wildfires
blocks Floods
blocks Hurricanes & Tropical Storms
blocks Landslides & Debris Flow
blocks Pandemic (Disease) Outbreaks
blocks Severe Weather
blocks Space Weather
blocks Thunderstorms & Lightning
blocks Tornadoes
blocks Tsunamis
blocks Volcanoes
blocks Winter Storms & Extreme Cold
blocks Malicious Cyber Activity
blocks Dysfunctional Management Practices
blocks Human Error
blocks Statutory / Regulatory / Contractual Change
blocks Conflict of Interest (COI) / Undue Influence / Insider Misconduct
blocks Workforce Shortage / Loss of Critical Skills / Labor Disruption
blocks COS-02.01B
blocks COS-03.03B
is blocked by NET-02 Network Security Controls (NSC) – Assessment Procedure
blocks SC-01 Policy and Procedures
blocks SC-01 [L] Policy and Procedures
blocks SC-01 [M] Policy and Procedures
blocks SC-01 [H] Policy and Procedures
blocks 03.01.12 Remote Access
blocks 03.01.16 Wireless Access
blocks 03.01.18 Access Control for Mobile Devices
blocks 03.13.01 Boundary Protection
blocks PR.IR-01 Networks and environments are protected from unauthorized logical access and usage
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