EDUP Gigabit Ethernet PCI Express PCI-E Network Card 10/100/1000Mbps RJ45 LAN Adapter Converter for Desktop PC, Model Number: EDUP-EP-9602 4.5 out of 5 stars 233 $9.99 $ 9. 99 $10.99 $10.99. PCI network segmentation is a key security practice—not a requirement—for any company that wants to protect its cardholder data and reduce its PCI DSS compliance scope. “The scoping process includes identifying all system components that are located within or connected to the cardholder data environment CDE,” according to the PCI. Jan 30, 2021 A PCI network adapter is a device that can be installed inside a computer tower, or case, and is connected to the motherboard using one of the peripheral component interconnect (PCI) slots on the board. PCI network segmentation is a common approach to reducing the scope (and therefore the complexity) of card-processing networks.

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A PCI network adapter is a device that can be installed inside a computer tower, or case, and is connected to the motherboard using one of the peripheral component interconnect (PCI) slots on the board. This type of device is usually either intended for use with an Ethernet cable connection or will be a wireless adapter that allows a computer to connect to a wireless network. A PCI network adapter is among the most common and popular type of network adapter, though external devices that can connect to a universal serial bus (USB) port on a computer are also quite popular.

While other devices can be used to connect to a network, a PCI network adapter is usually the most common type of device and is usually fairly inexpensive and rather easy to install. Most motherboards have several PCI slots on them, and while other devices such as sound cards and video cards may use these slots as well, it is quite common for a board to have enough slots for all of these devices. In general, there are two common types of PCI network adapter devices: wired adapters and wireless adapters.

A PCI network adapter for use with an Ethernet cable and wired network will typically have only the port for an Ethernet cable and a small light indicator to show when it is functioning. Ethernet cable looks similar to a standard phone cable, though the connection head is slightly larger. This type of cable is often used for creating wired networks and can allow data transmissions at very high speeds. A PCI network adapter will usually only have a place for a single plug, though both an “in” and “out” plug may be available for further networking.

Wireless networks may utilize a PCI network adapter that is specifically designed to pick up a wireless signal and allow a computer to connect to the network. These devices will usually have a small antenna on the back of the card that remains outside the computer and increases signal reception. USB network connectors are also available that allow a computer to connect to a network through a USB port on the computer. These devices are often easier to install than a PCI network adapter since they do not require internal installation, and they can be easily switched between multiple computers.

PCI DSS and the Network Diagram

This post is designed to give a high level overview of what should be included in a network diagram and how to incorporate simple data flow indicators to help address the all important question of what is the scope of your PCI DSS assessment. Drivers sanyo usb devices.

Network Documentation Overview Network documentation is extremely valuable to a PCI DSS assessor, so valuable in fact that is one of the first requirements listed in the Payment Card Industry Data Security Standard (PCI DSS). Requirement 1.1.2 in the PCI DSS requires the assessor to validate that a current network diagram with all connections to cardholder data, including any wireless networks, be available and also ensure that a process is in place to keep the diagram current. What I recommend to clients in addition to a network diagram is to highlight the card data flow on top of the network diagram. This is often not thought of because it is not called out as a specific requirement, however, documenting card data flows on top of the network diagram can serve to be invaluable. When combined, a network diagram and card data flow information can help a company come to a unified and clear understanding of where card data is stored, processed or transmitted within their environment as well as identify all supporting and connected systems and devices. So what does a network diagram do for you? A quality network diagram will illustrate 3 key points about your network:

• What devices exist on your network
• How are those devices connected
• Where are those devices physically located

Data flow indicators on your diagram will map out the following:

• Where does my data go
• Where the hand-offs are between encrypted data and unencrypted data
• Where data could possibly be stored

Now that we all agree we need network diagrams with a data flow illustration to document a PCI environment, the next logical question is to what level of detail do the diagrams need to be? Like many other subjective questions related to IT and security, the answer is it depends. Network Diagram Detail Levels When talking about data flow diagrams there are typically 4 levels of diagrams that are referenced; each increase in level indicates more detail:

• Level 0 (context level) – The highest level view of a system, show a system as a whole and its inputs and outputs from/to external factors.
• Level 1 – Illustrates primary processes, data stores and destinations that are linked.
• Level 2 – expansion of detail in level 1 diagram that shows how information moves from and to each of the devices and processes. Any decision routines in the data flow should be clearly called out.
• Level 3 - expansion of detail in level 2 diagram.

In my approach to constructing network diagrams I take a very similar view of the level of detail outlined in a data flow diagram. I start with a Level 0 (context) diagram and map out key locations and connection points. From there I can begin to expand the level of detail across connection points and at each site by identifying key systems, data stores, and show some segmentation if it exists on the network. Finally, if needed, I can expand the level of detail again to get to a level 2 or 3 diagram.

Once the network diagrams are in good shape, it is very easy to document the card data flow by either using color coded connection lines or eve drawing arrows along the path(s) the card data will travel.

Most of the time, a level 1 diagram will be sufficient to document the logical layout of a network environment and highlight the card data flow. It is important to note that you do not have to have a single all encompassing network diagram. For larger networks or as the level of detail increases it may be feasible to create multiple diagrams with links to each corresponding diagram.

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Below are some simple examples of possible level 0, level 1 and level 2 diagrams for a merchant with a remote store location, a central processing center and branch offices.

Level 0 diagram – the diagram identifies key locations on the network and the arrows highlight the expected flow of card data.

In a PCI DSS assessment scenario, this level of diagram helps to identify the key locations that should be the focus of the assessment; however, it does not provide much insight into the number of devices or logical layout of the physical sites.

Level 1 Diagram – the diagram indicates primary connection points and devices in the data flow.

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This diagram expands the level 0 diagram and highlights the key components at each physical location as well as a view into the logical layout within each physical location. Some companies will include additional detail like hostnames and IP addresses of network devices. While this is a good practice, this is not required for PCI.

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Depending on the complexity of your network, this level of diagram may satisfy the assessor needs for requirement 1.1.2.

A Level 2 Diagram could be created for each physical site by expanding the level of detail to all network components and devices including the telecom room, demarcation points, wiring, workstations and POS terminals.

This diagram expands the level 1 diagram and highlights devices and the logical layout within the merchant store location. Some diagrams can be very creative and even be documented on top of a floor map.

Network Diagramming Tools

Once you have an idea of the level of detail you want your diagrams to have, what tool should you use to build the diagrams? Any software with drawing capability can be used to create a network diagram; I have seen some very good diagrams created using tools like Microsoft PowerPoint. However, working with a tool that is designed to produce diagrams is recommended. These tools will include things like component symbols, the ability to embed object properties into a graphic, diagram linking and transitions. Some examples of tools that provide this functionality and more are Microsoft Visio, SmartDraw, and Network Notepad. There are many others, including free tools that will get the job done. Use the tools that fit your needs and budget.

If your company doesn't already have these types of diagrams available, you will be required to have one for a PCI DSS assessment and, once you have a quality diagram available for use and illustration I am willing to bet you will continue to document other key processes in the same manner. Now get to diagramming!

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