# Other hosts and servers in lab network are not online

**URL:** <https://legacy-community.ine.com/t/other-hosts-and-servers-in-lab-network-are-not-online/787>\
**Category:** Penetration Testing Student (SP)\
**Tags:** red, lab\
**Created:** [July 16, 2021, 3:03am UTC](https://legacy-community.ine.com/t/other-hosts-and-servers-in-lab-network-are-not-online/787 "2021-07-16T03:03:08Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![gopalsurya2000-9730d](https://avatars.discourse-cdn.com/v4/letter/g/58956e/32.png) [@gopalsurya2000-9730d](https://legacy-community.ine.com/u/gopalsurya2000-9730d)\
**Post date:** [July 16, 2021, 3:03am UTC](https://legacy-community.ine.com/t/other-hosts-and-servers-in-lab-network-are-not-online/787/1 "2021-07-16T03:03:08Z")

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Hi All,

I am able to connect to the lab network using openvpn. But I see that only my virtual machine is on the subnet, When I run a Nessus or Nmap scan, it says there is no other host active on the network. I am just trying to the labs for Nessus scans and NMAP scans,

Can someone please help?

Thanks a lot.  
-Gopal

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**Author:** ![jaa](https://avatars.discourse-cdn.com/v4/letter/j/e480ec/32.png) [@jaa](https://legacy-community.ine.com/u/jaa)\
**Post date:** [July 16, 2021, 3:59am UTC](https://legacy-community.ine.com/t/other-hosts-and-servers-in-lab-network-are-not-online/787/2 "2021-07-16T03:59:26Z")

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Try to Run nmap using `sudo`. Also use `-Pn`

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**Author:** ![Z3r0n37](https://sea1.discourse-cdn.com/flex015/user_avatar/legacy-community.ine.com/z3r0n37/32/48_2.png) [@Z3r0n37](https://legacy-community.ine.com/u/Z3r0n37)\
**Post date:** [July 16, 2021, 10:59am UTC](https://legacy-community.ine.com/t/other-hosts-and-servers-in-lab-network-are-not-online/787/3 "2021-07-16T10:59:22Z")

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Can you send the commands you’re running? As @jaa said, you need to run nmap as root

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**Author:** ![gopalsurya2000-9730d](https://avatars.discourse-cdn.com/v4/letter/g/58956e/32.png) [@gopalsurya2000-9730d](https://legacy-community.ine.com/u/gopalsurya2000-9730d)\
**Post date:** [July 16, 2021, 1:27pm UTC](https://legacy-community.ine.com/t/other-hosts-and-servers-in-lab-network-are-not-online/787/4 "2021-07-16T13:27:51Z")

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Hi, thanks for responding to my question.

I used the namp -sn \<ip adress/ subnet mask\> as mentioned in the lab solution.

It does not show any hosts. Today I tried the fping command and it did show the other hosts.

Then I ran the nmap -A command on each individual host that is alive and proceeded with the lab. It worked out fine.

Thanks a lot.  
-Gopal