1. Install the next packages

cups cups-filters system-config-printer

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2. Create a directory to store files while they are being printed (as root of cource)

mkdir -p /var/spool/lpd/lp
chown username_here:cups /var/spool/lpd/lp
chmod 770 /var/spool/lpd/lp

As root, create /etc/printcap with these contents

lp:\
lp=/dev/unlpt0:\
sh:\
mx#0:\
sd=/var/spool/lpd/lp:\
lf=/var/log/lpd-errs:

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3. Edit /etc/devfs.rules file

[system=10]
add path 'unlpt*' mode 0660 group cups
add path 'ulpt*' mode 0660 group cups
add path 'lpt*' mode 0660 group cups
add path 'usb/*' mode 0660 group cups
add path 'unlpt*' mode 0660 group username_here
add path 'ulpt*' mode 0660 group username_here
add path 'lpt*' mode 0660 group username_here
add path 'usb/*' mode 0660 group username_here

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4. Add to /etc/rc.conf file lines

cupsd_enable="YES"
devfs_system_ruleset="system"
lpd_enable="YES"
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5. Restart devfs and cups

service devfs restart
service cupsd restart
service lpd start
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6. Open system-config-printer and add the printer

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An another way via browser

http://localhost:631/admin

This printer

https://www.openprinting.org/printer/Brother/Brother-HL-1250