Provided by: xtables-addons-common_3.25-2ubuntu0.1_amd64 bug

NAME
       pknlusr — userspace monitor for successful xt_pknock matches


Synopsis
       pknlusr [group-id]


Description
       xt_pknock  is an xtables match extension that implements so-called port knocking. It can be configured to
       send information about each successful match via a netlink socket  to  userspace.  pknluser  listens  for
       these notifications.

       By  default,  pknlusr  listens  for  messages  sent to netlink multicast group 1. Another group ID may be
       passed as a command-line argument.


See also
       xtables-addons(8)

xtables-addons                                     2020-10-22                                         pknlusr(8)