Written 25 Aug 2026. This is a how-to, not a product card. Buy links are not tagged yet.

Is the leftover box still on?

You left the leftover box on. This morning ads are back, or SSH hangs. Check if it is awake before you buy anything.

You left the leftover box on. This morning ads are back, or SSH hangs. Check if it is awake before you buy anything. Ping is a knock to see if the leftover box answers. That is a thirty-second check from the couch. Distinct from finding the address the first time. A new router will not help.

Skip this if SSH already works

If you can already SSH from the couch, the leftover box is on. That is the whole test. You do not need this note.

Knock from another computer

From another computer on the house network, in Terminal, knock three times:

ping -c 3 leftover

If you used an address instead of a name, swap leftover for the number from find the leftover box on the house network. On Windows, use ping leftover and stop it after a few replies. If ping answers, the leftover box is on. Then SSH from the couch.

If ping fails

The leftover box may be asleep, cooked, off the cable, or actually off. Do not start with a new router. Check these:

A laptop lid put it to sleep. That is don't let the leftover laptop sleep.
It is buried under clothes or in a closed cabinet. That is don't cook the leftover box.
House Wi-Fi dropped. That is a cable beats Wi-Fi for the leftover box.
You shut it off last night. That is shut down the leftover box without yanking the plug. Press the power button once, then ping again.

A phone can tell you too

A phone on the house network still blocking ads means the leftover box is doing work. If ads came back, DNS may have fallen to the router. Point the house at the leftover box again in the first useful thing on the leftover box.

What next

If ping answered and SSH works, you are done. If ping needed the number, not leftover, give the leftover box a name that sticks. If it has been a week, keep the leftover box updated. Do not buy a NAS. Do not buy a monitoring box.

Skip

Skip this note if you can already SSH from the couch. Skip a new router. Skip a monitoring appliance, a UPS, and a new switch this pass.

Sources

Debian: ping. Ubuntu: ping. Official pages only. For the leftover box, see start with what you already have. For the address, see find the leftover box on the house network. For the login, see SSH from the couch.

Also on this topic

Find the leftover box on the house networkThe leftover box has a number on your house network. You need that number to SSH from the couch. You do not need a new router. SSH from the couchType commands on the leftover box from your laptop, on the house network. Password login first. Do not open this to the internet. Don't let the leftover laptop sleepClose the lid. The leftover laptop has to stay awake so SSH and Pi-hole keep working. A leftover desktop can skip this note. A cable beats Wi-Fi for the leftover boxOnce the leftover box is doing real work, plug it into the router with a cable. House Wi-Fi can wait. Skip this if it is already on a cable.