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After creating a custom Log Source Extension to parse a Source IP address from this event snippet ‘IP Address: (10.20.30.40), the Source IP is not being extracted from the payload.
The Log Source Extension is showing the following:
Which Regular Expression should be used to ensure the Source IP is parsed properly?
A customer expanded operations by merging with an acquisition, adding additional traffic. Overall concerns have surfaced about event collecting, and the Deployment Professional is asked about deployment costs, security, and resiliency due to the additional network segments. The focus is on keeping the overall SIEM collecting events as the priority.
Which deployment architecture collection method will meet this need?
A Deployment Professional working with IBM Security QRadar SIEM V7.2.7 is noticing system notifications relating to performance degradation of the CRE relating to expensive rules. Upon locating the rules that are being expensive they need to be modified to no longer trigger this notification.
What are three causes for a rule to become expensive? (Choose three.)
A. Containing payload matches tests
B. Rule consisting of a large scope
C. Containing payload contains tests
D. Rule consisting of a narrow scope
E. Utilizing non-standard regular expressions
F. Utilizing non-optimized regular expressions
A user can create a custom rule that has a large scope, uses a regex pattern that is not efficient, includes Payload contains tests, or combines the rule with regular expressions. When this custom rule is used, it negatively impacts performance, which can cause events to be incorrectly routed directly to storage. Events are indexed and normalized but they don’t trigger alerts or offenses.
A Deployment Professional is working with IBM Security QRadar SIEM V7.2.7. for a new customer that is trying to create their network hierarchy. The customer currently has more than the maximum of 1,000 network objects and CIDR ranges. A few of the CIDRs of the customer are:
Which supernet should be used to shrink the amount of network objects for the supplied group of CIDRs?
C. C. 220.127.116.11/23
D. D. 18.104.22.168/27
Supernetting, also called Classless Inter-Domain Routing (CIDR), is a way to aggregate multiple Internet addresses of the same class.
Using supernetting, the network address 22.214.171.124/24 and an adjacent address 126.96.36.199/24 can be merged into 188.8.131.52/23. The “23” at the end of the address says that the first 23 bits are the network part of the address, leaving the remaining nine bits for specific host addresses.
A Deployment Professional has detected a big spike in a customer’s “Malware infection detected” rule that monitors their endpoint anti-virus solution. The spike happened over the weekend, but when the rule was checked, it was not changed. Since Monday morning, the rule has spiked and has not yet stopped generating offenses.
What was added to the customer’s QRadar log sources that caused this problem?
B. Flow Collectors
C. Domain Controllers
D. Guest network in their offices.
Rules perform tests on events, flows, or offenses. If all the conditions of a test are met, the rule generates a response.
QRadar QFlow Collector passively collects traffic flows from your network through span ports or network taps. The IBM Security QRadar QFlow Collector also supports the collection of external flow-based data sources, such as NetFlow.
A customer has existing complex network infrastructure with many redundant links and the IP packets are taking different paths for inbound and outbound traffic. A Deployment Professional needs to configure SFlow.
What should be configured in IBM Security QRadar SIEM V7.2.7 to support this specific case?
A. Enable flow forwarding
B. Disable flow forwarding
C. Enable asymmetric flows
D. Disable symmetric flows
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