How would you judge if a remote server is running IIS or Apache?
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Answer / chaitanya
Error messages oftentimes giveaway what the server is running, and many times if the website administrator has not set up custom error pages for every site, it can give it away as simply as just entering a known bad address. Other times, just using telnet can be enough to see how it responds. Never underestimate the amount of information that can be gained by not getting the right answer but by asking the right questions.
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Answer / gaurav
Penetration testing techniques can easily reveal from a website which of the ports, operating systems and web servers are running. For Instance, Nikto and Owasp-Zed are two methods of doing this.
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