# Unit4: Connection through Ethernet **URL:** \ **Category:** Your First Robot With ROS\ **Created:** [August 18, 2022, 4:36pm UTC](https://get-help.theconstruct.ai/t/unit4-connection-through-ethernet/18763 "2022-08-18T16:36:54Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![misbahsuhail123](https://get-help.theconstruct.ai/letter_avatar_proxy/v4/letter/m/85f322/32.png) [@misbahsuhail123](https://get-help.theconstruct.ai/u/misbahsuhail123)\ **Post date:** [August 18, 2022, 4:36pm UTC](https://get-help.theconstruct.ai/t/unit4-connection-through-ethernet/18763/1 "2022-08-18T16:36:55Z")
Hello! why this command “nmap -sP 192.168.1.0/24” doesnot work in shell. i tried it on ubuntu shell after installing nmap and it worked, why didnot work in course shell? ---
**Author:** ![ralves](https://get-help.theconstruct.ai/user_avatar/get-help.theconstruct.ai/ralves/32/7039_2.png) [@ralves](https://get-help.theconstruct.ai/u/ralves)\ **Post date:** [August 18, 2022, 7:43pm UTC](https://get-help.theconstruct.ai/t/unit4-connection-through-ethernet/18763/2 "2022-08-18T19:43:17Z")
Hi @misbahsuhail123, the IP you used is from a local network, but the remote computers in The Construct are **not** part of your internal network, that is why we cannot find your robot from the web terminals. You really have to use that command only in the terminal of your own personal computer, where your robot is located. Please let me know if you still have any questions. ---
**Author:** ![misbahsuhail123](https://get-help.theconstruct.ai/letter_avatar_proxy/v4/letter/m/85f322/32.png) [@misbahsuhail123](https://get-help.theconstruct.ai/u/misbahsuhail123)\ **Post date:** [August 20, 2022, 12:48pm UTC](https://get-help.theconstruct.ai/t/unit4-connection-through-ethernet/18763/3 "2022-08-20T12:48:04Z")
Thank you. Its clear now, thanks for quick response 👍 ---
**Author:** ![bayodesegun](https://get-help.theconstruct.ai/user_avatar/get-help.theconstruct.ai/bayodesegun/32/10684_2.png) [@bayodesegun](https://get-help.theconstruct.ai/u/bayodesegun)\ **Post date:** [August 22, 2022, 8:20am UTC](https://get-help.theconstruct.ai/t/unit4-connection-through-ethernet/18763/4 "2022-08-22T08:20:53Z")