Here is a guide how to block TeamViewer connection
/ip firewall filter
add chain=forward action=add-dst-to-address-list protocol=tcp address-list=TV \
address-list-timeout=1d dst-port=5938
add chain=forward action=drop src-address-list=TV
add chain=forward action=drop dst-address-list=TV
/ip firewall filter
add chain=forward action=add-dst-to-address-list protocol=tcp address-list=TV \
address-list-timeout=1d dst-port=5938
add chain=forward action=drop src-address-list=TV
add chain=forward action=drop dst-address-list=TV
INFO SERVICE PROXY SETTING AND MIKROTIK
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