Linux: Hide OS Version from Nmap scans
If you want to disable detection of OS version during Nmap scans
1. Edit the sysctl.conf file
2. Add the following entry at the end of the file
net.ipv4.ip_default_ttl = 199
save and exist.
3. Run the following command to reload the sysctl configuration
4. You can now check the result by running an online nmap test here