Various items (to be categorized)

(Host) Intrusion detection monitoring (e.g. malware protection)

• Office equipment (e.g. laptops, workstations)

  • XXX

• S2C

  • Microsoft Azure

    • Supported:

      • Anti-virus & threat protection in Windows Security. It runs different types of scans and gets the latest protection offered by Microsoft Defender Antivirus.

        • Code ??

        • Data ??

        • Files ??

        • Upload/download ??

    • Not supported

      • Intrusion detection system (IDS)

      • Anti-malware

      • Anti-ransomware

  • Amazon web services

    • XXX

Network traffic/nodes

• Microsoft Azure

  • In every HTTP request returned by the server there is an HTTP header which can help us to identify from which node the request was returned.

• Amazon web services

Incident testing (scenario’s)

• Penetration testing (twice a year)

• Back-up restore testing (twice a year)

• Business continuity testing (twice a year)

Secure communication services

• Microsoft Azure

  • Supported:

    • DNSSec - Domain security

    • SPF - Protection against email phishing

    • DKIM - Protection against email phishing

    • DMARC - Protection against email phishing

    • STARTTLS - Secure connection between mail servers (via Sendgrid)

    • IPv4 - Internet Protocol version 4

    • SAML - Authentication and authorization

  • Not supported

    • RPKI - Securing the routing infrastructure

    • DANE- Secure connection between mail servers

    • STIX - Sharing of cyber threat information

    • TAXII - Sharing of cyber threat information

    • IPv6 - Internet Protocol version 6

• Amazon web services

  • XXX

Communication security ('layered access'/'trusted origin')

• Network segmentation: Resources are organized in separate virtual or physical networks. Separate access rules are defined per network. The access to the different networks is restricted according to the access control matrix.

• All private networks are protected with a firewall.

• Open network ports and allowed protocols are managed through firewall rules.

• The access rules for allowed ports and protocols are managed by the responsible system administrator of every asset.

• Only ports and protocols needed for the operation of applications and services are allowed. All other traffic is denied by default.

• The network and firewall configurations are checked on a regular basis.

• Remote Access through public networks is done only through encrypted channel (TLS or SSH) for which two options are allowed:

  • Setup a VPN connection to the private network. Only selected trusted users can make VPN connections.

  • Configure remote access through Remote Desktop Protocol (RDP) or SSH. In this case the connection is allowed only from whitelisted IP addresses. All connection attempts are logged in the system event log. The logs are checked on a regular basis.

Time zone/time stamp source

Microsoft Azure

Amazon web services

• Ubuntu NTP server is used for system time synchronization. Ubuntu has time synchronization built in and handled by the Network Time Protocol daemon.

Multi/single tenant approach

• Microsoft Azure

  • Single tenant. There is logical separation of resources which is ensured by the allow/deny permissions for a set of actions in the application. The security model is base on Access control lists and role membership.

• Amazon web services

Monolithic vs (micro)services architecture

• Microsoft Azure

  • There is a layer architecture in place. The client is an SPA (single page application) based on Angular). The service layer is based on .NET Web API REST services. There are a number of different endpoints available but it’s not a microservice architecture. The application is installed on Virtual Machines (VM) and is hosted in Microsoft Azure. It uses Azure IaaS (Infrastructure as a Service) resources. In general, the deployment architecture is Windows N-tier application which uses SQL Server as a database storage. The documents are stored in Azure Blob Storage service.

• Amazon web services

Availability & scalability

• Microsoft Azure

  • Availability of the virtual machines is guaranteed by Microsoft Azure SLA.

  • All virtual machines are monitored on the following parameters:

    • CPU usage – should not be above 95% for more than 5 min.

    • Memory usage – should not be above 95% for more than 5 min.

    • Network traffic – should be below 20 mbs.

    • Disk free space – should be above 10%.

  • If lack of resources is detected during the infrastructure monitoring action will be taken to resize the needed resources in Azure.

• Amazon web services

  • XX

Access control security

• 2FA: not available

• S2C has an integrated logical access framework that can segregate access based on roles, screens, activities (CRUD) and organizational dimensions

• Access is managed through Access Control Lists (ACL). Allow or Deny permissions can be set on selected actions for a given scope. The permissions can be set for individual user or for groups of users.

• Privileged accounts protection:

  • Supported

    • Multi Factor Authentication

  • Not supported

    • 4-eyes principle: at least two people must be present during activities and this must be auditable.

    • Activities must be conducted from a network and system which has been proven to be secured.

  • ??

    • IP whitelisting, certificates, conditional access checks, VPN
      
      

Data retention

• XXX