3 ms·
The "Server" response header will usually tell you but may omit a specific version depending on configuration. Use "curl -I whatever.com" to send a HEAD reques
by getsat 11y ago
The "Server" response header will usually tell you but may omit a specific version depending on configuration.
Use "curl -I whatever.com" to send a HEAD request and look at the headers in the response.
- e12e 11y agoYou can also try Nmap, but apparently it's not able to tell too much if the server doesn't reply with a header: nmap -T5 -sV --version-all -p 80,443 www.google.com Starting Nmap 6.00 ( http://nmap.org ) at 2015-04-16 03:02 CEST Nmap scan report for www.google.com (80.202.12.244) Host is up (0.0015s latency). Other addresses for www.google.com (not scanned): (...) rDNS record for 80.202.12.244: cache.google.com PORT STATE SERVICE VERSION 80/tcp open http Google httpd 2.0 (GFE) 443/tcp open ssl/http Google httpd 2.0 (GFE) Service Info: OS: Linux; CPE: cpe:/o:linux:kernel Apparently stackoverflow (well know user of .net stack) is "unknown", but microsoft.com gives: nmap -T5 -sV --version-all -p 80,443 microsoft.com Starting Nmap 6.00 ( http://nmap.org ) at 2015-04-16 03:05 CEST Nmap scan report for microsoft.com (134.170.188.221) Host is up (0.18s latency). Other addresses for microsoft.com (not scanned): 134.170.185.46 rDNS record for 134.170.188.221: microsoftproductionstudios.org PORT STATE SERVICE VERSION 80/tcp open http Microsoft IIS httpd 8.5 443/tcp open ssl/http Microsoft IIS httpd 8.5 Service Info: OS: Windows; CPE: cpe:/o:microsoft:windows I didn't look to carefully at the so-output -- maybe there's a funky loadbalancer in front or something.