+Network Security

Network Security

Implement controls to prevent and detect unauthorized network connections. Establish and maintain a secure configuration baseline for all network components, following vendor instructions, industry standards, and best practices. Ensure Confidentiality, Integrity, and Availability (CIA) of data during network transmission. Prevent and detect data leakage, and secure data transfer with external parties. Implement measures to secure network traffic between internal networks and the internet/external connections. Apply encryption for all communication protocols over corporate, public, domestic, thirdparty, and wireless networks, based on data classification and risk assessments. 

Regularly review roles and responsibilities for defining, implementing, approving, changing, and reviewing firewall rules and connection filters.

Financial entities shall perform the review of firewall rules and connections filters on a regular basis according to the classification and overall risk profile of ICT systems involved. For the ICT systems supporting critical or important functions, the financial entities shall verify the adequacy of the existing firewall rules and connection filters at least every six months.

1. Visão geral

1.1 Referências

1.2 Requisitos identificados

1.3 Regulamentos relacionados

2. Requisitos identificados

Requisitos

3. Regulamentos relacionados

Regulamentos
EULAW Article 9 4

4.   As part of the ICT risk management framework referred to in Article 6(1), financial entities shall:

(a)

develop and document an information security policy defining rules to protect the availability, authenticity, integrity and confidentiality of data, information assets and ICT assets, including those of their customers, where applicable;

(b)

following a risk-based approach, establish a sound network and infrastructure management structure using appropriate techniques, methods and protocols that may include implementing automated mechanisms to isolate affected information assets in the event of cyber-attacks;

(c)

implement policies that limit the physical or logical access to information assets and ICT assets to what is required for legitimate and approved functions and activities only, and establish to that end a set of policies, procedures and controls that address access rights and ensure a sound administration thereof;

(d)

implement policies and protocols for strong authentication mechanisms, based on relevant standards and dedicated control systems, and protection measures of cryptographic keys whereby data is encrypted based on results of approved data classification and ICT risk assessment processes;

(e)

implement documented policies, procedures and controls for ICT change management, including changes to software, hardware, firmware components, systems or security parameters, that are based on a risk assessment approach and are an integral part of the financial entity’s overall change management process, in order to ensure that all changes to ICT systems are recorded, tested, assessed, approved, implemented and verified in a controlled manner;

(f)

have appropriate and comprehensive documented policies for patches and updates.

For the purposes of the first subparagraph, point (b), financial entities shall design the network connection infrastructure in a way that allows it to be instantaneously severed or segmented in order to minimise and prevent contagion, especially for interconnected financial processes.

For the purposes of the first subparagraph, point (e), the ICT change management process shall be approved by appropriate lines of management and shall have specific protocols in place.
EULAW Article 12 4

4.   Financial entities, other than microenterprises, shall maintain redundant ICT capacities equipped with resources, capabilities and functions that are adequate to ensure business needs. Microenterprises shall assess the need to maintain such redundant ICT capacities based on their risk profile.