I vaguely remember managing an email server around 1997 and there was a checkbox to disable telnet access. IIRC it was Imail on windows NT 4, but that was a long time ago. I do remember thinking it was odd that they could discriminate, but it seemed to work - though I'm not sure how or why.
-B On Thu, Jun 10, 2010 at 2:31 PM, Ralf Hildebrandt <ralf.hildebra...@charite.de> wrote: > I heard that there are firewalls/security appliances that supposedly > can distinguish "somebody using telnet" from "a machine speaking SMTP". > > I must admit, it sounds feasible (timing between keystrokes etc.), but > little useful. > > Anyway. Is there such a thing? Does anybody use such a thing? > > -- > Ralf Hildebrandt > Geschäftsbereich IT | Abteilung Netzwerk > Charité - Universitätsmedizin Berlin > Campus Benjamin Franklin > Hindenburgdamm 30 | D-12203 Berlin > Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 > ralf.hildebra...@charite.de | http://www.charite.de > >
