Only allow connections from the Sales network into the Internal network

and to the cloud backup server.

To only allow connections from the Sales network into the Internal network and the cloud backup server, you can implement the following firewall rules:

1. Deny all incoming connections by default:
- This ensures that no connection is allowed unless explicitly permitted.

2. Allow connections from the Sales network to the Internal network:
- Use source IP filtering to allow traffic originating from the Sales network (identified by its IP range) to access the Internal network.
- Specify the necessary ports and protocols (e.g., TCP port 80 for HTTP) to allow specific types of traffic.

3. Allow connections from the Sales network to the cloud backup server:
- Similar to the rule above, use source IP filtering to allow traffic from the Sales network to reach the cloud backup server.
- Again, specify the appropriate ports and protocols required for accessing the cloud backup server (e.g., TCP port 22 for SSH).

By implementing these firewall rules, only connections originating from the Sales network will be allowed to access the Internal network and the cloud backup server. All other incoming connections will be denied by default.

To only allow connections from the Sales network into the Internal network and to the cloud backup server, you will need to configure network firewall rules or access control lists. Here's how you can do it step-by-step:

1. Identify the IP range or subnet of the Sales network. This will be used to define the source of the allowed connections.

2. Determine the IP addresses or hostnames of the devices in the Internal network and the cloud backup server. These will be used to define the destination of the allowed connections.

3. Access your network firewall or security device's management interface. This could be a hardware firewall, software firewall, or a network router with firewall capabilities.

4. Create a new firewall rule or access control list (ACL) to allow access from the Sales network to the Internal network and the cloud backup server.

5. Define the source for the allowed connections as the IP range or subnet of the Sales network.

6. Define the destination for the allowed connections as the IP addresses or hostnames of the devices in the Internal network and the cloud backup server.

7. Specify the type of connections to allow. This could include specific protocols (e.g., TCP, UDP) or ports (e.g., port 80 for HTTP, port 443 for HTTPS).

8. Save and apply the firewall rule or ACL changes.

9. Test the connectivity from the Sales network to the Internal network and the cloud backup server to ensure that only the desired connections are allowed.

10. Monitor the firewall logs to detect any unauthorized access attempts and adjust the firewall rules or ACLs as needed.

By following these steps, you will have configured your network to only allow connections from the Sales network into the Internal network and to the cloud backup server while blocking connections from other networks.