import-ferm - import existing firewall rules into ferm

       iptables-save older than 1.3 is unable to write valid saves - this is not a bug in import-ferm.

ferm 2.5.1                                         2025-03-21                                     IMPORT-FERM(1)

       This script helps you with porting an existing IPv4 firewall configuration to ferm.  It reads a file
       generated with iptables-save, and tries to suggest a ferm configuration file.

       If no input file was specified on the command line, import-ferm runs iptables-save.

       import-ferm - import existing firewall rules into ferm

import-ferm > ferm.conf

       iptables-save | import-ferm > ferm.conf

       import-ferminputfile > ferm.conf