It seems that fitlering by contents does not accept URLs as query filter.
I tried to set this one:
/ip firewall filter chain=forward action=drop protocol=tcp content=mysite.com/banner comment=“” disabled=no
And it does not work
If I change it to
/ip firewall filter chain=forward action=drop protocol=tcp content=mysite.com/ comment=“” disabled=no
or
/ip firewall filter chain=forward action=drop protocol=tcp content=/banner comment=“” disabled=no
then it works.
It seems that URL which contains slash which is not at the beginning or the end cannot be set as content.
I use MT version 2.9.46