/ip fir fil

add action=add-dst-to-address-list address-list=youtube address-list-timeout=\
    30m chain=forward content=.youtube.com dst-port=443 out-interface=\
    ether1_public protocol=tcp
add action=add-dst-to-address-list address-list=youtube address-list-timeout=\
    30m chain=forward content=.ytimg.com dst-port=443 out-interface=\
    ether1_public protocol=tcp
add action=add-dst-to-address-list address-list=youtube address-list-timeout=\
    30m chain=forward content=.ytimg.l.google.com dst-port=443 out-interface=\
    ether1_public protocol=tcp
add action=add-dst-to-address-list address-list=youtube address-list-timeout=\
    30m chain=forward content=.youtube.l.google.com dst-port=443 \
    out-interface=ether1_public protocol=tcp
add action=add-dst-to-address-list address-list=facebook \
    address-list-timeout=30m chain=forward content=.facebook.com dst-port=443 \
    out-interface=ether1_public protocol=tcp
add action=add-dst-to-address-list address-list=googlevideo \
    address-list-timeout=30m chain=forward content=.googlevideo.com dst-port=\
    443 out-interface=ether1_public protocol=tcp

add action=reject chain=forward comment=youtube disabled=yes \
    dst-address-list=youtube reject-with=icmp-host-unreachable
add action=reject chain=forward comment=facebook disabled=yes \
    dst-address-list=facebook reject-with=icmp-host-unreachable
add action=reject chain=forward comment=googlevideo disabled=yes \
    dst-address-list=googlevideo reject-with=icmp-host-unreachable