/ ip web-proxy
set enabled=yes src-address=0.0.0.0 port=3128 hostname="proxy" \
transparent-proxy=yes parent-proxy=no\
cache-administrator="webmaster" max-object-size=153600KiB \
cache-drive=system max-cache-size=none max-ram-cache-size=none
/ ip web-proxy access
add src-address=action=allow comment="" disabled=no
192.168.1.0/24 é a faixa usada pelos clientes (troque pela sua faixa).
/ ip web-proxy access
add url=".ebkn.com" action=deny comment="" disabled=no
add url=".ebky.com" action=deny comment="" disabled=no