The Juniper ATP C&C (Command and Control) cloud feed provides a dynamic list of known active C&C servers. These servers are fundamental to botnet operations, acting as the central point for controlling infected machines. They are also frequently used as distribution points for malware downloads. SRX Series Firewalls leverage this specific feed to identify and block traffic to and from these malicious servers, thereby disrupting botnet communications and preventing malware infections from these known sources.

A. infected host cloud feed: This feed identifies already compromised hosts within the protected network, not the external servers that are the source of the threats.

B. Geo IP feed: This feed is used for creating policies based on the geographical location of an IP address, not for identifying specific threat types like botnet servers.

D. blocklist feed: This is a generic term. The C&C feed is a specific type of blocklist provided by Juniper ATP, making "C&C cloud feed" the more precise and accurate answer.

1. Juniper Networks TechLibrary

"Understanding Juniper ATP Cloud Feeds": This official documentation explicitly defines the C&C feed: "The Command and Control (C&C) feed is a list of known active C&C servers. SRX Series devices can use this feed to take action against traffic to and from these malicious servers." It also defines the Infected Host feed as a list of clients on your network that are infected.

URL: https://www.juniper.net/documentation/us/en/software/junos/security-policies/topics/concept/juniper-atp-cloud-feeds-understanding.html

2. Juniper Networks TechLibrary

"Security Intelligence Overview": This document describes how SRX Series devices use various threat intelligence feeds. It details the C&C feed's role in blocking communication with botnet command and control servers.

URL: https://www.juniper.net/documentation/us/en/software/junos/security-intelligence/topics/concept/security-intelligence-overview.html