http://zqktlwk5ilgohy63eyrptyb4mc76bunfmxcnstkmveyjnskxkpq3b5yd.onion/wiki/Local_Programs_and_Services
So far I've tested Firefox, links, and ncftp, and none of them report your username OR hostname in the login. So that's good. Telnet It is possible for a telnet server to query any arbitrary environment variables from your telnet client. These include USER, HOSTNAME, DISPLAY, etc. However, the default behavior of Linux telnet is to only send DISPLAY and PRINTER.