A common recommendation of some security standards and also management and governance standards is to keep an inventory of the company's assets. Why is this a recommendation? Is it really important?
Yes, it's important and a lot, if you don't have an inventory of assets in the company where you work, do it as soon as possible, have good documentation of everything in the company. It is important to have everything documented, but everything, start with the physical assets, this is not restricted to the information technology area, this would be important to have for the entire company, as the blog is about technology, we will stick to this segment .
Start with physical assets, servers, rack, cables, computers, printers, switches, firewall, routers, peripherals such as keyboard, mouse, network cards, hard drives, sockets, network points, cable ends, ducts, access points wireless, antennas, everything.
You will need to assemble a spreadsheet with all the equipment, models, date of purchase, location in the company, label with identification number, then you can make an inventory of the software installed on these equipment, who is the manufacturer, equipment documentation provided by the manufacturer .
After having the inventory of the physical equipment, you will be able to move on to the network cables, switch ports, network configurations, virtualization, virtualization configuration, how the vlans are organized in the company, in short, all the logical organization of the company and also how is the backup policy set, how often backups are made, retention time, restore time, backup repository, how much space is there for data storage, is everything working perfectly? Is there anything to improve? This last question must be asked of everything.
Finally, when an inventory is made, it is already done at the same time and provides documentation of all the company's assets, whether physical, virtual, software or configurations, there are tools that help in this task, but there will always be limitations in the tools and the it is better to do it in a spreadsheet and manually because you will have high flexibility when preparing the documents.
Hope this post helped you and good luck with the inventory and documentation.
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