Aew a config....
Vou testar fazer isso em outra porta mesmo Só pra ver.


"""ip web-proxy
set enabled=yes src-address=0.0.0.0 port=3128 hostname="proxy" \
transparent-proxy=yes parent-proxy=0.0.0.0:0 \
cache-administrator="webmaster" max-object-size=40960KiB \
cache-drive=system max-cache-size=unlimited max-ram-cache-size=unlimited
/ ip web-proxy access
add dst-port=23-25 action=deny comment="block telnet & spam e-mail relaying" \
disabled=yes
/ ip web-proxy cache
add dst-port=3128 url=":cgi-bin \\\\\?" action=deny comment="don't cache \
dynamic http pages" disabled=no
add dst-port=3128 url="https://" action=deny comment="" disabled=no