Hi Peter Palmreuther, On Monday, May 23, 2005, you wrote: > Hello Jonathan,
> On Monday, May 23, 2005 at 5:30:54 AM Jonathan [JA] wrote: >>>>> I want to be totally invisible and untraceable. If I'm >>>>> browsing the web, I'm using a >>>>> tunnel (proxy server 127.0.0.1:8080) that totally hides my identify (IP >>>>> address) ... SMN>>>> ...are you really sure you are invisible... >>> He is! I bet he blocks packets of type "ICMP Echo request" and drops >>> them on his firewall, therefore he's *absolutely invisible*!!! Trust >>> me!1!eins!elf!! ;-) JA>> *coughs* black hole *coughs*... JA>> Problem with blocking ICMP echo requests is it is just as bad as JA>> having them enabled... People can still see you there, you just appear JA>> as a "black hole" sucking in the packets ;) > Really? You mean the absence of information *is* information? ;-) > Something like "if the router in front of him doesn't tell me he's > not there, he <cough>*IS*<cough> there!"?! ;-) If he has access to control the router in front of him, that probably means he is using a small network (or even a business network), and the IP addresses behind are probably no routable... or he works for his service provider, and can control them at a higher level. If that is the case, then sure, if he can get them to report the host doesn't exist then you really cannot tell without more "testing" than ICMP echo requests. But if he's blocking on just the firewall, then the complete absence of information *is* information ;) > Still leaves the question: Where is the black hole located *if* somebody > enables this "security feature"? I have a theory this black hole is a > few inches in front of the monitor, between a pair of human ears ;-) hehe... trying to work out if that is a joke on me or not ;) -- Jonathan Angliss <[EMAIL PROTECTED]>
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