Na maior parte, sim. Você pode simplesmente ver todas as portas do sistema e ativar os números de versão.
nmap <Server> -sV -p 1-65535
Starting Nmap 6.40 ( http://nmap.org ) at 2016-07-09 03:11 CDT Nmap scan report for localhost (127.0.0.1) Host is up (0.00040s latency). Other addresses for localhost (not scanned): 127.0.0.1 Not shown: 998 closed ports PORT STATE SERVICE VERSION 22/tcp open ssh (protocol 2.0) 80/tcp open http Apache httpd 2.4.7 ((Ubuntu)) Service detection performed. Please report any incorrect results at http://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 41.27 seconds