Nmap scan report for crl.duosecurity.com (52.167.190.23) Host is up (0.058s latency). Not shown: 999 filtered tcp ports (no-response) PORT STATE SERVICE VERSION 80/tcp open http Microsoft-Azure-Application-Gateway/v2 | http-robots.txt: 1 disallowed entry |_/ | http-server-header: | Microsoft-Azure-Application-Gateway/v2 |_ Windows-Azure-Web/1.0 Microsoft-HTTPAPI/2.0 | fingerprint-strings: | FourOhFourRequest, GetRequest, HTTPOptions: | HTTP/1.1 500 Internal Server Error | Server: Microsoft-Azure-Application-Gateway/v2 | Date: Wed, 16 Apr 2025 10:32:54 GMT | Content-Type: text/html | Content-Length: 203 | Connection: close | | 500 Internal Server Error | |

500 Internal Server Error

|
Microsoft-Azure-Application-Gateway/v2
| | | RTSPRequest: | | 400 Bad Request | |

400 Bad Request

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Microsoft-Azure-Application-Gateway/v2
| | | X11Probe: | HTTP/1.1 400 Bad Request | Server: Microsoft-Azure-Application-Gateway/v2 | Date: Wed, 16 Apr 2025 10:32:54 GMT | Content-Type: text/html | Content-Length: 183 | Connection: close | | 400 Bad Request | |

400 Bad Request

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Microsoft-Azure-Application-Gateway/v2
| |_ |_http-title: Site doesn't have a title (text/html). 1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at https://nmap.org/cgi-bin/submit.cgi?new-service : SF-Port80-TCP:V=7.92%I=7%D=4/16%Time=67FF8755%P=x86_64-redhat-linux-gnu%r( SF:GetRequest,187,"HTTP/1\.1\x20500\x20Internal\x20Server\x20Error\r\nServ SF:er:\x20Microsoft-Azure-Application-Gateway/v2\r\nDate:\x20Wed,\x2016\x2 SF:0Apr\x202025\x2010:32:54\x20GMT\r\nContent-Type:\x20text/html\r\nConten SF:t-Length:\x20203\r\nConnection:\x20close\r\n\r\n\r\n SF:500\x20Internal\x20Server\x20Error\r\n\r\n
SF:

500\x20Internal\x20Server\x20Error

\r\n
Mic SF:rosoft-Azure-Application-Gateway/v2
\r\n\r\n\r\n" SF:)%r(HTTPOptions,187,"HTTP/1\.1\x20500\x20Internal\x20Server\x20Error\r\ SF:nServer:\x20Microsoft-Azure-Application-Gateway/v2\r\nDate:\x20Wed,\x20 SF:16\x20Apr\x202025\x2010:32:54\x20GMT\r\nContent-Type:\x20text/html\r\nC SF:ontent-Length:\x20203\r\nConnection:\x20close\r\n\r\n\r\n500\x20Internal\x20Server\x20Error\r\n\r\n

500\x20Internal\x20Server\x20Error

\r\n
Microsoft-Azure-Application-Gateway/v2\r\n\r\n SF:\r\n")%r(RTSPRequest,B7,"\r\n400\x20Bad\x20Request</ SF:title></head>\r\n<body>\r\n<center><h1>400\x20Bad\x20Request</h1></cent SF:er>\r\n<hr><center>Microsoft-Azure-Application-Gateway/v2</center>\r\n< SF:/body>\r\n</html>\r\n")%r(X11Probe,169,"HTTP/1\.1\x20400\x20Bad\x20Requ SF:est\r\nServer:\x20Microsoft-Azure-Application-Gateway/v2\r\nDate:\x20We SF:d,\x2016\x20Apr\x202025\x2010:32:54\x20GMT\r\nContent-Type:\x20text/htm SF:l\r\nContent-Length:\x20183\r\nConnection:\x20close\r\n\r\n<html>\r\n<h SF:ead><title>400\x20Bad\x20Request\r\n\r\n
400\x20Bad\x20Request
\r\n
Microsoft-Azure-Ap SF:plication-Gateway/v2
\r\n\r\n\r\n")%r(FourOhFourR SF:equest,187,"HTTP/1\.1\x20500\x20Internal\x20Server\x20Error\r\nServer:\ SF:x20Microsoft-Azure-Application-Gateway/v2\r\nDate:\x20Wed,\x2016\x20Apr SF:\x202025\x2010:32:54\x20GMT\r\nContent-Type:\x20text/html\r\nContent-Le SF:ngth:\x20203\r\nConnection:\x20close\r\n\r\n\r\n500\ SF:x20Internal\x20Server\x20Error\r\n\r\n

SF:500\x20Internal\x20Server\x20Error

\r\n
Microso SF:ft-Azure-Application-Gateway/v2
\r\n\r\n\r\n"); Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port Device type: general purpose Running (JUST GUESSING): OpenBSD 4.X (86%) OS CPE: cpe:/o:openbsd:openbsd:4.0 Aggressive OS guesses: OpenBSD 4.0 (86%) No exact OS matches for host (test conditions non-ideal). Network Distance: 23 hops TRACEROUTE (using port 80/tcp) HOP RTT ADDRESS 1 0.22 ms 208.76.251.177.rdns.ColocationAmerica.com (208.76.251.177) 2 0.61 ms gw.mcom-colocationamerica.com (208.64.231.81) 3 2.26 ms r2b4.n1.p1401.lax.multacom.net (64.69.46.11) 4 1.33 ms microsoft.as8075.any2ix.coresite.com (206.72.210.143) 5 0.88 ms ae24-0.ear03.lax30.ntwk.msn.net (104.44.41.128) 6 55.61 ms be-23-0.ibr01.lax30.ntwk.msn.net (104.44.33.173) 7 60.32 ms 51.10.19.169 8 55.53 ms be-10-0.ibr01.atl30.ntwk.msn.net (104.44.18.220) 9 59.92 ms 104.44.31.87 10 57.02 ms 104.44.51.190 11 ... 12 60.43 ms 104.44.50.112 13 ... 22 23 59.41 ms 52.167.190.23 OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 36.59 seconds