Free tool · No upload · No sign-up
Drop a raw log export from a Cisco IOS switch, Cisco ASA or FortiGate and get a first read in seconds: severity breakdown, the messages that repeat, an event timeline — and for firewall traffic logs, who's talking to whom: top sources, destinations and ports with allow/deny analysis and concentration metrics that make floods and scans stand out. Everything runs in your browser.
Traffic-flow charts appear when the log contains connection events (FortiGate type=traffic, ASA built/denied connections, IOS ACL log messages). Other messages still feed the severity and pattern views. Logs are full of real addresses — run them through the Config Sanitizer before sharing any of this outside your team.
| Count | Sev | Pattern | Example |
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