Realm Application Security
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Network Security
MongoDB Realm uses TLS 1.3 to secure all network requests to and from your application, including apps that connect from a Realm SDK as well as queries and operations on a linked MongoDB Atlas data source. The TLS certificate is pre-defined and cannot be customized.
Firewall Configuration
MongoDB Realm only sends requests from the following IP addresses. You can copy this list to an allowlist on your firewall:
13.236.189.10 18.202.2.23 18.210.66.32 18.211.240.224 18.213.24.164 52.63.26.53 54.203.157.107 54.69.74.169 54.76.145.131 18.192.255.128 18.157.138.240 18.158.38.156 52.220.57.174 18.140.123.126 13.251.182.174 65.0.112.137 3.6.231.140 13.234.189.107
You can find this information in computer-friendly formats at these URLs:
IP Access List
MongoDB Realm allows client requests from the enabled entries in the app's IP access list. Allowed requests will still use Realm's authentication and authorization rules. By default, your Realm app allows access from any client.
Find Your IP Address
View IP Access List Entries
Navigate to App Settings in the MongoDB Realm UI, and then click the IP Access List tab to view the IP Access List settings.

Create an IP Access List Entry
To add an IP address to the list of enabled entries, click the green Add IP address button to open the Add IP Access List Entry modal. This modal allows you to specify your current IP address or use a custom one. You can also specify a comment about the entry.

Edit an IP Access List Entry
To edit an entry, click the edit button on the right-hand side of the entry, and the Update IP Access List Entry modal will open. This modal allows you to specify your current IP address or use a custom one. You can also specify a comment about the entry.

Delete an IP Access List Entry
To delete an entry, click the delete button on the right-hand side of the entry, and a modal will open requesting you to confirm that you want to delete the entry. Click the red delete button on the modal to complete the deletion of the entry.
