System Requirements & Network Firewall Matrix
Edit ArticleHardware specifications, supported operating systems, and firewall ports needed for Sentinel.
Sentinel Operations Team
3 min read
Updated August 28, 2026
v3.2Before deploying the Sentinel Agent across your fleet, ensure your client endpoints meet the minimum hardware specifications and that your corporate firewall allows outbound communication to your Sentinel server.
Supported Operating Systems
| Operating System | Supported Versions | Architecture | Service Manager |
|---|---|---|---|
| Windows Workstation | Windows 11, Windows 10 (Build 1809+) | 64-bit (x64) & ARM64 | Windows Service Control Manager |
| Windows Server | Windows Server 2022, 2019, 2016 | 64-bit (x64) | Windows Service Control Manager |
| Ubuntu / Debian | Ubuntu 20.04+, Debian 11+ | 64-bit (x64) | Systemd daemon |
| RHEL / CentOS / Rocky | RHEL 8.0+, Rocky Linux 8+ | 64-bit (x64) | Systemd daemon |
| Apple macOS | macOS 13 (Ventura), 14 (Sonoma), 15 (Sequoia) | Apple Silicon (M1/M2/M3) & Intel | LaunchDaemon + Security Profile |
Client Hardware Footprint
| Hardware Resource | Minimum Requirement | Recommended | Typical Footprint |
|---|---|---|---|
| Processor (CPU) | 1.0 GHz Dual-Core | 2.0 GHz Quad-Core | < 0.2% CPU Usage |
| System Memory (RAM) | 1 GB Free RAM | 2 GB Free RAM | 12 MB – 18 MB RAM |
| Disk Storage | 100 MB Free Space | 500 MB Free Space | 35 MB (Binary + Local Queue) |
| Network Bandwidth | 10 Kbps Upstream | 50 Kbps Upstream | < 500 KB per hour |
Firewall & Network Port Requirements
Important
Outbound Only — No Inbound Ports Required
Sentinel endpoints NEVER listen on inbound ports. You do not need to open any incoming firewall ports on client machines. All communication is outbound HTTPS over standard Port 443.
| Protocol | Destination Port | Destination Host | Purpose |
|---|---|---|---|
| HTTPS / TLS 1.3 | Port 443 (Outbound) | https://endpoint.yourcompany.com | Heartbeats, policy synchronization, and telemetry event uploads |
| DNS | Port 53 (UDP/TCP) | Internal or Public DNS | Resolving the Sentinel management server hostname |
Tags:#Prerequisites#Firewall#Compatibility
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