Frequently asked questions about the NHS Secure Boundary.
Scope of NHS Secure Boundary
In addition to NHS organisations, we will also be migrating HSCN internet traffic through Central Network Service Providers (CNSPs). NHS Secure Boundary also provides protection for NHS organisations with local internet breakouts; a direct connection will be established via IPSec tunnels between a suitable edge device(s) in your organisation and your dedicated Palo Alto Access Prisma tenant. Additionally NHS organisations can benefit from Imperva Web Application Firewall to protect inbound website traffic. Bi-directional internet traffic: traffic which is initiated from within the NHS perimeter. For example, an NHS worker accessing the internet from their NHS device. Both HSCN internet traffic and NHS organisations local internet breakout traffic (including public WiFi) will be protected by Palo Alto Prisma Access as part of Secure Boundary. Inbound website traffic: traffic which is initiated from the Internet. For example, a member of the public accessing an NHS hosted site via the internet from their own personal device. NHS organisations with this type of traffic will be protected through the Imperva Cloud Web Application Firewall service. Inbound internet traffic is on the Palo Alto road map however this is not part of the current offering. If availing the Palo Alto Prisma Access NGFW an NHS organisation also has the option to tailor the functionality within the platform. The suite of functionality will be discussed during onboarding, an overview of the core offering can be found here. Visibility: Increased visibility of network traffic, so NHS organisations can better manage their own risk. Enabling the DSC to identify malicious content within encrypted traffic on behalf of the wider NHS, facilitating enterprise detection, analysis and prevention. Intelligence: Provision of enriched threat intelligence, enabling the DSC to respond at pace and scale during incidents and emerging risks. Enable working with advanced threat protection to provide a more detailed view of what is happening locally. Compliance: Provide capabilities to improve organisations’ Data Security Protection Toolkit (DSPT) and Cyber Essentials plus (CE+) assessment scores. The solution is compliant with CE+, DSPT, National Cyber Security Centre (NCSC) and IT Healthcare (ITHC) regimes and will remain compliant throughout the development of the service. Value: Procure at scale to one national standard, enabling improved planning and better value for money for the NHS. The solution is centrally funded for NHS organisations.
The Solution
Palo Alto Prisma Access Service: Each organisation who is connecting directly to the platform will have their own virtual firewall instances in Google Cloud Platform. Imperva Cloud WAF Service: This is a Web Application Firewall (WAF), stored in the Imperva cloud. By adopting the managed option, an organisation will need to go through the Customer Service Function (CSF) to make any changes to their platform; these will be carried out on their behalf by the relevant service management teams including Accenture and Palo Alto and/or Imperva. If you are connecting via the HSCN route you will receive the national rule-set applied to every CNSP; a change to the rule-set must be requested through your CNSP. If the internet breakout comes from a centralised location with multi-protocol label switching (MPLS) or wide area network (WAN) linking other locations together then connection to Prisma will be as if the NHS organisation is a single site. All traffic that passes through the Prisma instance will be subject to the rules and policies applied. The primary technical pre-requisite is that your organisation has an on-premise device (firewall, router or SD-WAN device) that can establish an IPSec tunnel to the Prisma service at the rate which your internet access is set. For example, if you have a 200Mb/s internet circuit, the device needs to be able to create an IPSec tunnel and encrypt at 200Mb/s. All IPSec VPN tunnels will be created in accordance with the National Cyber Security Centre using the PRIME cryptographic profile (FOUNDATION components can be used for compatibility on a case by case basis). An important benefit of availing the service is the provision of enriched threat intelligence to the NHS England Cyber Security Operations Centre (CSOC), enabling the CSOC to identify malicious content on behalf of the wider NHS. NHS Secure Boundary also takes threat data from sources outside the service (for example NHSmail, NHS England CSOC or the wider customer network of Palo Alto) and allows that threat data to be used by the firewalls in the solution.
Visibility and reporting