by saving the HFS options to a file you have access to the ban list which looks like this
ban-list=172.1.1.*#firstline|10.*.*.*#mask ban|192.2.3.4;192.5.6.7#some local ip|
you can manually edit the file before running hfs and add all the bans in one go
each ban is composed of a field with mask#comment, the fields separated by a pipe | ,
do not forget to put the last one at the end of the line
inside ban options you will see
172.1.1.* firstline
10.*.*.* mask ban
192.2.3.4;192.5.6.7#some local ip