Network segregation process ensures restrictions are in place to avoid unnecessary exposure of systems within particular networks.
Network segregation involves dividing a network into smaller chunks where each chunk can be defined with rulesets to control the communication between specific hosts and services.
Corporate environment often use VLANs to separate data from telephony, or production environments from corporate environment.
Numerous real life examples exist where network segmentation is mandatory due to pro-active internal initiatives or regulatory decisions. In PCI industry, network segmentation is done to avoid exposure of CDE (Cardholder Data Environment) towards corporate environment. Similarly, in retail sector, corporate environment is cordoned off from production environment where customer and production website networks operate.
We take customer communication as seriously as reporting or assessment execution. We engage with customers during all stages, and ensure that customer contacts are up to date in the language they understand. Post engagement, a free debrief is conducted to help the customers understand the weaknesses and prepare a mitigation plan.
The assessment-execution phase is followed by the analysis & reporting. Defendza performs analysis on the testing output, evaluates the risk impact and likelihood of exploitation in realistic scenarios before providing action plans to remediate the identified risks. All our reports address business as well as the technical audience with supporting raw data, including mitigation measures at strategic and tactical levels.
Layer2 and layer3 checks are performed to check for weaknesses in network segregation controls. These include consultants being physically present in one network segment and attempt access into target network segments. Various other checks include scans to identify allowed traffic for multiple protocols. By attempting VLAN hopping attacks using computers to mimic as switch, it's possible to identify weaknesses in switch configurations.
Network traffic is analysed to understand the IP address, network scheming, services and protocols in use. From broadcast addresses, responses and proprietary protocols, it's possible to find out the size of network, network devices in use, their software versions, services in use and the related networks in communication.
The first step of reconnaissance activity includes passively identifying the hosts and services visible on the Internet. This includes limited Open Source Intelligence phase. During red teaming or related offensive security projects, this exercise involves extensive information gathering about a customer's people, processes and technology in use. Research based threat intelligence is an integral part of any offensive exercise.
Overall, the aim of this phase aims to harvest as much information as possible about your organisation that would be used for later phases.
Client service underpins everything we do.
Our advisory services follow a 'no surprises' approach offered with clear and concise communication. All the proposals are customised centering on project-based requirements as captured during the scoping discussions.
Cyber security is a business enabler. We make sure we understand your business and its needs so that we can help you grow your business in the certain knowledge that it’s protected.
Our teams are led by veteran security consultants accredited by CREST standards for the last several years. Our experience shows that our clients are best served by giving them the right advice for their cyber security needs. We do not believe in spreading fear, uncertainty and doubt to generate more business.
Much of the manufacturing industry has failed to take proactive steps to defend against cyber attacks—which is a notable problem considering the growing threats the industry faces
