Bogus Hostname and IP
Posted on 1998-06-20
This is not matter of death or life for me but it locked up my interest. I have seen people that login in a normal way(using ISP Service) and making some tricks in their Linux box and manipulate their IP or even their hostname. Is this possible?
In my web site I have locked the index.html with the chmod 600 permission and later pass the control from the .htaccess for deny entry at a perl script which write a log where I can see it later and later this script pass the control to welcome.html file.
What I do is simple: I record their IP, Browsers, Hostnames, Referring Site, time and etc.
I am very curious but I have seen three guys so far that they have accessed this page and I get the output that the hostname and their IP have a same value for example this is one entry: Hostname: and IP:220.127.116.11
I know that this should be some kind of trick but the best part is that I am able to connect their websites(running Apache) but when I try to lookup these IP and try to resolve them there is not any hostnames for those IP's. Are these bogus IP's?
I have Linux(Slackware 2.0.30) in my computer, can I do the same thing? If yes how ... and please be SPECIFIC in the instructions you are giving...