| 1 | --- |
| 2 | title: Network connectors (syslog) |
| 3 | description: Vendor-by-vendor syslog ingestion patterns and validation steps. |
| 4 | --- |
| 5 | |
| 6 | Network connectors ingest **syslog events** from firewalls and network devices (and some syslog-forwarding services). |
| 7 | |
| 8 | ## Data path (how it flows) |
| 9 | |
| 10 | **Typical flow:** |
| 11 | |
| 12 | 1. Network device → **syslog sender** (UDP/TCP) |
| 13 | 2. Syslog collector/ingestion → **Graylog** (inputs/streams/pipelines) |
| 14 | 3. Routed/normalized events → **Wazuh Indexer / OpenSearch-backed storage** (tenant-aware) |
| 15 | 4. Graylog alert definitions → `gl-events*` → **CoPilot Incident Management → Alerts** |
| 16 | 5. Operator workflow → **Cases** |
| 17 | |
| 18 | > The key requirement in multi-tenant setups is **tenant-aware routing**. |
| 19 | |
| 20 | ## Vendor/device guides |
| 21 | |
| 22 | - [Fortinet FortiGate](/integrations/network-connectors/fortigate) |
| 23 | - [Palo Alto Networks](/integrations/network-connectors/palo-alto) |
| 24 | - [Cisco ASA](/integrations/network-connectors/cisco-asa) |
| 25 | |
| 26 | ## Success criteria |
| 27 | |
| 28 | - [ ] Syslog events are arriving |
| 29 | - [ ] You can identify the device/source |
| 30 | - [ ] Events are routed/tagged to the correct customer |
| 31 | - [ ] You can build at least one alert on top of the data (optional) |
| 32 | |
| 33 | ## Starter alerts (generic) |
| 34 | |
| 35 | These are useful across most firewall/device syslog sources: |
| 36 | |
| 37 | - Excessive denies/drops from a single source IP |
| 38 | - Inbound connections to sensitive ports (RDP/SSH/VPN admin) |
| 39 | - New admin login or configuration change event |
| 40 | - Threat/UTM events (if your device emits them) |
| 41 | |
| 42 | ## Troubleshooting |
| 43 | |
| 44 | - Validate the device is sending to the correct IP/port |
| 45 | - Confirm the collector is listening and receiving |
| 46 | - Confirm parsing/extraction fields exist (vendor format) |
| 47 | - Confirm routing rules / customer association |