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NetworkingintermediateAbout 25 minutesTroubleshooting

Troubleshoot: the whole office is offline

Everyone in the office has lost the internet, but the router itself is fine and the ISP light is on. Test the way the office sees the network, read the rules, and find the one that is wrong.

Part of the path MikroTik routing (step 4 of 4)

Part of the path Troubleshooting (step 7 of 7)

The report

From Marcus Hall, office manager

Nobody in the office can get online

Since this morning every computer and phone in the office says "no internet". They all still connect to the Wi-Fi and the printer works. The cable from the ISP is plugged in and its light is on. Can you take a look at the router?

Impact: Eight people cannot use email or cloud apps.

What you will do

6 tasks
  1. 1.Check the router first

    If the router cannot reach the internet, nothing behind it can.

  2. 2.Try it the way the office does

    The computers in the office send their traffic from the 192.168.88.0/24 network, not from the router's own internet address.

  3. 3.Read how the office is connected

    Office addresses are private, so the internet cannot answer them directly.

  4. 4.Rule out the firewall

    There are firewall filter rules too, and a firewall is the first thing most people blame.

  5. 5.Make the change

    Make the change that puts the office back online.

  6. 6.Prove it works

    Send the same ping from the office address again.