A cybersecurity monitoring system does not operate in isolation. Its effectiveness is directly proportional to the breadth and depth of its integrations with the surrounding IT and security ecosystem. The SIEM platform must receive data from network infrastructure, endpoint security tools, identity management systems, cloud platforms, and threat intelligence feeds to provide comprehensive visibility. This chapter defines the supporting system requirements and integration specifications for each ecosystem component.

7.1 Integrated Support Requirements Overview

The following diagram illustrates all supporting systems that must be integrated with the central SIEM platform to achieve full monitoring coverage. Each supporting system connects to the SIEM through a specific protocol and port, providing a distinct category of security telemetry. The integration map serves as the master reference for network firewall rule configuration and integration project planning.

Figure 7.1: Integrated Support Requirements Diagram — All supporting systems integrated with the central SIEM Platform, showing connection protocols and ports for: Network Infrastructure (Syslog/NetFlow), Identity & Access Management (LDAP/API), IT Service Management (REST API), Endpoint Security (Agent/API), Cloud Platforms (CloudTrail/API), Threat Intelligence Feeds (STIX/TAXII), Vulnerability Management (API), and SOAR Platform (Webhook/API).

Supporting System	Integration Type	Protocol/Port	Data Provided	Integration Priority
Network Infrastructure (Firewalls, Switches, Routers)	Log forwarding	Syslog UDP/514, TCP/6514; NetFlow UDP/2055	Firewall allow/deny, routing changes, flow records	Critical
Identity & Access Management (AD, LDAP, IAM)	Directory query + log forwarding	LDAP TCP/389, 636; HTTPS TCP/443	Authentication events, group membership, privilege changes	Critical
IT Service Management (ServiceNow, Jira)	Bidirectional API	REST API HTTPS TCP/443	Incident tickets, change records, CMDB asset data	High
Endpoint Security (EDR, AV, DLP)	Agent + API	Agent TCP/443; HTTPS TCP/443	Endpoint telemetry, malware detections, DLP violations	Critical
Cloud Platforms (AWS, Azure, GCP)	API pull	HTTPS TCP/443	CloudTrail, Azure Monitor, GCP Logging events	High
Threat Intelligence Feeds (MISP, commercial)	STIX/TAXII pull + API	HTTPS TCP/443	IOC feeds, threat actor profiles, vulnerability intelligence	High
Vulnerability Management (Qualys, Tenable)	API pull	HTTPS TCP/443	Asset vulnerability data, scan results, risk scores	Medium
SOAR Platform	Webhook + API	HTTPS TCP/443	Playbook execution results, case management updates	High

7.2 Network Infrastructure Integration

Network infrastructure devices — firewalls, routers, switches, and load balancers — are the most fundamental log sources for a cybersecurity monitoring system. These devices generate high-volume, high-value security events that form the backbone of threat detection. The integration must be configured to capture all security-relevant events without overwhelming the log collection infrastructure with routine operational noise.

Device Type	Critical Log Events	Recommended Log Level	Estimated EPS
Next-Generation Firewall	Allow/deny decisions, IPS alerts, URL filtering, SSL inspection events	Informational (all security events)	500–5,000 EPS per device
Core/Distribution Switch	Port security violations, MAC address changes, STP topology changes, VLAN changes	Warning and above	10–100 EPS per device
Router/WAN Edge	BGP/OSPF changes, ACL hits, interface state changes, routing anomalies	Warning and above	5–50 EPS per device
VPN Gateway	Authentication success/failure, session establishment/termination, policy violations	Informational (all auth events)	50–500 EPS per device
Load Balancer	Connection rate anomalies, health check failures, SSL certificate events	Warning and above	10–200 EPS per device

7.3 Cloud Platform Integration

Cloud platform integration presents unique challenges compared to on-premises infrastructure. Cloud providers offer native logging services — AWS CloudTrail, Azure Monitor, and GCP Cloud Logging — that must be configured to forward events to the on-premises SIEM or a cloud-native SIEM instance. The integration architecture must account for the high volume of cloud API calls, the need for cross-account log aggregation in multi-account environments, and the latency introduced by cloud-to-on-premises log forwarding.

Cloud Provider	Log Service	Critical Log Sources	Integration Method	Typical Latency
Amazon Web Services	CloudTrail, VPC Flow Logs, GuardDuty, Security Hub	API calls, network flows, threat detections, security findings	S3 + SQS notification or Kinesis Firehose	1–5 minutes
Microsoft Azure	Azure Monitor, Microsoft Defender, Entra ID Logs	Activity logs, sign-in events, security alerts, resource changes	Event Hub + Log Analytics API	1–3 minutes
Google Cloud Platform	Cloud Logging, Security Command Center, VPC Flow Logs	Admin activity, data access, system events, security findings	Pub/Sub + API pull	1–5 minutes