UNHIDE-TCP(8) System Manager's Manual UNHIDE-TCP(8)
NAME
unhide-tcp — forensic tool to find hidden TCP/UDP ports
SYNOPSIS
unhide-tcp [options]
DESCRIPTION
unhide-tcp is a forensic tool that identifies TCP/UDP ports that are
listening but are not listed by /sbin/ss (or alternatively by /bin/net-
stat) through brute forcing of all TCP/UDP ports available.
Note1 : On FreeBSD ans OpenBSD, netstat is always used as iproute2
doesn't exist on these OS. In addition, on FreeBSD, sockstat is used
instead of fuser. Note2 : If iproute2 is not available on the system,
option -n or -s SHOULD be given on the command line.
OPTIONS
-h --help
Display help
--brief
Don't display warning messages, that's the default behavior.
-f --fuser
Display fuser output (if available) for the hidden port On Free-
BSD, instead of fuser command, displays the output of the sock-
stat command for the hidden port.
-l --lsof
Display lsof output (if available) for the hidden port
-n --netstat
Use /bin/netstat instead of /sbin/ss. On system with many opened
ports, this can slow down the test dramatically.
-s --server
Use a very quick strategy of scanning. On system with a lot of
opened ports, it is hundreds times faster than ss method and ten
thousands times faster than netstat method.
-o --log
Write a log file (unhide-tcp-AAAA-MM-DD.log) in the current di-
rectory.
-V --version
Show version and exit
-v --verbose
Be verbose, display warning message (default : don't display).
This option may be repeated more than once.
Exit status:
0 if no hidden port is found,
4 if one or more hidden TCP port(s) is(are) found,
8 if one or more hidden UDP port(s) is(are) found,
12 if one or more hidden TCP and UDP ports are found.
BUGS
Report unhide-tcp bugs on the bug tracker on GitHub
(https://github.com/YJesus/Unhide/issues)
SEE ALSO
unhide (8).
AUTHOR
This manual page was written by Francois Marier (francois@debian.org)
and Patrick Gouin (patrickg.github@free.fr).
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU General Public License, Version 3 or any
later version published by the Free Software Foundation.
LICENSE
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/li-
censes/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Administration commands June 2022 UNHIDE-TCP(8)
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