Introduction to Shared Lists
The Shared Lists screen allows you to build a list of items that can be reused throughout Teramind. You can build lists of websites, IP addresses, application names, and more. These shared lists can be used when defining behavior rules, as well as in monitoring settings.
You can see all the existing lists, including their name, type, number of items in the list, etc. You can create, edit, or delete shared lists from this screen.
Types of Shared Lists
Text: Useful for simple data such as keywords, names, website URLs, etc. For example, “John”, “www.facebook.com”, “casino”, etc.
Regular Expression: It’s a powerful list type that can be used to detect patterns and specially formatted text such as credit card numbers, zip/postal codes, etc. For example, “[pP][aA@][sS5$][sS5$]w[oO0]{0,1}[rR][dD]”, “{4}[0-9]{12}”, etc. Check out the Regex Cheat Sheet in this article for more information about regular expressions.
Network: Allows you to enter IP addresses with subnet masks*. For example, 55.112.63.22/32, 192.168.20.35/24, etc. Network lists can be used with the Network-based rules or to control Network monitoring settings.
*Subnet Mask
The number after the “/” symbol refers to the subnet mask in CIDR notation. It’s used to divide the IP address into the network and host portions. A subnet mask is used to determine which part of an IP address refers to the network and which part refers to the host. A subnet mask of /32 translates into a subnet of 255.255.255.255. This means the IP address is used by a single network/device and not a host. A subnet mask of /24 translates into a subnet of 255.255.255.0. This means the first 24 bits (255.255.255) are reserved for the network address, and the last 8 bits (.0) are reserved for the host (allowing for a maximum of 256 hosts).
Creating a New Shared List
1. Click the New button near the top-right corner. You will be taken to the Create Shared List screen:
2. Enter a name for the list.
3. Select a list type. You can choose from Text, Regular Expressions, and Networking types. See the Types of Shared Lists section above to learn what each of these lists can contain.
4. Click the Create button. You will be taken to the Edit shared list screen, where you can add list items:
5. Click the Add List Item button to add a new list item.
6. Click the Tick Mark 
button to add the item to the list or the X button to remove the item.
7. You can click the Three Dots 
in front of a list item to access the item's Context Menu. From there, you can edit or remove the item.
8. Click the Import CSV button to import a list from a CSV file. An Import Shared list items window will pop up:
a. Click the Download Sample CSV button to download a sample CSV template. This will give you an idea of how to format your own CSV.
b. Click the Upload CSV button to select the file for upload. Note that each item in the CSV should be in a separate line for Teramind to import it correctly. Note that the “Values” text should be on the first line, and it’s mandatory. Here’s an example:
c. At the bottom, you will see what name/value pairs are expected in the CSV file and which of them are required.
9. Click the Apply Changes button to save the list.
Note that on the Cloud deployments, the maximum number of items allowed in a Shared List is 32,000.
Editing / Cloning / Removing a Shared List
Click the Three Dots in front of a shared list to access its Context Menu:
Select Edit Shared List in a New Tab to edit it. Editing a shared list is similar to creating a new shared list.
Select Clone Shared List to make a copy of the list.
Select Remove Shared List to delete it.