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/netstat) 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 FreeBSD, instead of fuser command, displays the output of the sockstat 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 directory.
- -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 ([email protected]) and Patrick Gouin ([email protected]).
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/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.