Robust Classifier for TCP/IP Fingerprinting

This web page attempts to determine your host's operating system based on the TCP/IP "signature." It analyzes the packet headers of the HTTP GET request from your host. This technique is known as TCP/IP fingerprinting and has applications in intrusion detection, NAT detection and Internet modeling. In contrast to rule-based approaches, we use a Bayesian Classifier to probabilistically determine the most likely operating system. By accessing this page, you are helping us better train our classifier. Additional background.

HTTP Information:

Request from: 38.107.191.104
Time: Sat, 31 Jul 2010 16:58:43 -0400
Agent: CCBot/1.0 (+http://www.commoncrawl.org/bot.html)
Agent OS: Other

Identifying (Rule-based):

38.107.191.104: UNKNOWN [5840:51:1460:1:7:1:1:60].

Rule-based method fails to identify your machine!

Identifying (Bayesian Classifier):

SYN: [df=1][ttl=64][syn=60B][wss=S4]: Linux (P = 0.987)

Guess inconsistent with HTTP agent.
Please send us your host information below.

Feedback:

We are using this data to train our classifier. If the classifier incorrectly identified your system, please help us by filling in the following fields. Thanks!

Operating System:
OS Version:
OS/TCP Modifications:

2004-01-24