Like ping, it is measured in ms and the lower value is better. This shows you how stable the Ping amount is.

Jitter: This is the amount of variance between the different ping measurements.

Ping: This is measured in ms (milliseconds) and the lower the value, the faster the packets take to arrive across the network.

Using the -A flag will force nmap to scan more aggressively, returning significantly more information but transparently. To find the IP addresses of your router and various devices on your network, you can run arp or ipconfig. Anything other than 0% should be a concern. To scan for open ports on a range of IP addresses, use a slash.

Packet Loss: data is sent across the net in short blocks (usually 64 bytes) known as “packets.” You shouldn’t lose any packets.

Your Speedtest will start – it will tell you your download and upload speed, and will measure Packet Loss, Ping and Jitter.

You’ll see an alert that “Speedtest” would like to use your current location.

Speedtest for Mac from the Mac App Store here.

Terminal repeatedly tests the ping of the network – it will keep going until you stop it – so press Ctrl + C when you are finished to quit the Terminal ping test process.Īnother way to test ping is to use an app such as Speedtest by Ookla. To Ping the BBC enter ping 81.200.64.50 or ping Enter “ping” followed by the IP address or web address.Open a new Terminal window (it’s located in Applications > Utilities, or you can just start typing it in Spotlight).You can also test ping on the Mac directly in the Terminal app.

Macbook ip address terminal