these scripts are used by cronjob and limiting network usage for cifs in this case, you can simply edit the bandwidth limit and ports to your usecase
example cron configuration:
0 7-17 * * mon,tue,wed,thu,fri root PATH="/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/root/bin" /sbin/limit_cifs_25Mbit.sh > /dev/null
0 18-23 * * * root PATH="/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/root/bin" /sbin/limit_cifs_500Mbit.sh > /dev/null
0 0-6 * * * root PATH="/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/root/bin" /sbin/limit_cifs_500Mbit.sh > /dev/null
it will set the bandwidth limit each hour