Monitor

What it does: watches several hosts at once, pinging each on a repeating interval and showing it as a live tile (up/down, response time, packet loss). It's for keeping an eye on things over time rather than a one-shot check.

What you need: the list of hosts/IPs you want to watch. It keeps running until you stop it.

Safe to run: yes — it's just repeated pings.

What to expect / reading results: green tiles = reachable and healthy; a tile flipping to red or piling up loss tells you exactly WHEN and WHICH host went bad. That timing is the point — leave it running while you make a change (to see the moment it recovers) or to catch an intermittent fault in the act.

Interval and alerts: pick how often to ping (2, 5, 10 or 30 seconds; 5 is the default). Each tile also shows min / avg / max over its last 60 replies and, while a host is down, "down since HH:mm". Tick "Alert on down / back up" to be told when a host changes state: after 2 failed pings in a row (one dropped ping is not an outage) it plays your View ▸ Alert sound (Windows only — on Linux the alert is the toast and the Activity line, no sound), shows a toast in the top-right of the SubnetSlinger window (in-app — nothing goes to the OS or anywhere else) and writes an Activity line; the same happens when it is back up — after 2 good pings in a row, so one stray reply mid-outage doesn't count — with the outage length. Storm control: everything that changes in one probe round is collapsed into ONE sound and one toast per direction ("⚠ 3 hosts down"); a host that flips state 4 or more times in 10 minutes is marked flapping and muted (one "flapping — muted" line) until it settles. Tick "Open an incident when a host goes down" to get one incident per outage — hosts that go down in the same round share one incident, the recovery is added to it, and a host that fails again within 10 minutes of recovering is added to its previous incident instead of opening a new one. Both are off by default. Your target list, interval and these choices are remembered between sessions.