(Linux) Why Nmap not works / Subnets in IPAM not scanned

(Linux) Why Nmap not works / Subnets in IPAM not scanned

​Take Screenshots/Output for all the below commands for troubleshooting and giving solution asap

Scenario 1 :


 If nmap not works in linux machine, We have to change mode to executable.

Resolution: Go to OpManager/Nmap directory via terminal. Exceute the command chmod 777 nmap/chmod +x nmap​

Scenario 2:

 Even it is not working after following the scenario 1

Resolution:
  1. Download nmap(7.40 linux deb file) from https://nmap.org/dist
  2. Install it in /usr/bin/
  3. Go to Opmanager/Nmap directory via terminal. Use mv command rename the nmap to nmap-old
  4. Go to Opmanager/bin directory via terminal. create a symbolic link to installed nmap using the below command
                sudo ln -s /usr/bin/nmap ../Nmap/nmap
  5. Now connect to client and scan the subnets.

Scenario 3:

 Even it is not working after following the scenario 1 & 2

Resolution:

Go to Opmanager/Nmap directory via terminal.

Enter ./nmap -sP -v -PE -R 192.168.23.0/24  -oX output.xml

Check the output whether it requires any linux libraries if so install it and check again.

PS: If problem not resolved then upload us the above outputs, screenshots and logs

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