Blocking Psiphon in Mikrotik.

Block psiphon by ip

/ip firewall address-list
add address=23.203.62.16 list=PsiphonServer
add address=23.203.62.17 list=PsiphonServer
add address=23.203.62.18 list=PsiphonServer
add address=23.203.62.19 list=PsiphonServer
add address=23.203.62.25 list=PsiphonServer
add address=23.203.62.26 list=PsiphonServer
add address=23.203.62.27 list=PsiphonServer
add address=23.203.62.32 list=PsiphonServer
add address=23.203.62.33 list=PsiphonServer
add address=23.203.62.34 list=PsiphonServer
add address=23.203.62.35 list=PsiphonServer
add address=23.203.62.41 list=PsiphonServer
add address=23.203.62.42 list=PsiphonServer
add address=23.203.62.43 list=PsiphonServer
add address=23.203.62.48 list=PsiphonServer
add address=23.203.62.49 list=PsiphonServer
add address=23.203.62.50 list=PsiphonServer
add address=23.203.62.51 list=PsiphonServer
add address=23.203.62.56 list=PsiphonServer
add address=23.203.62.57 list=PsiphonServer
add address=23.203.62.58 list=PsiphonServer
add address=23.203.62.59 list=PsiphonServer
add address=23.203.62.64 list=PsiphonServer
add address=23.203.62.65 list=PsiphonServer
add address=52.216.16.35 list=PsiphonServer
add address=52.216.20.43 list=PsiphonServer
add address=52.216.64.3 list=PsiphonServer
add address=52.216.65.203 list=PsiphonServer
add address=52.216.81.147 list=PsiphonServer
add address=52.216.97.45 list=PsiphonServer
add address=52.216.112.109 list=PsiphonServer
add address=52.216.112.158 list=PsiphonServer
add address=52.216.131.173 list=PsiphonServer
add address=52.216.137.118 list=PsiphonServer
add address=52.216.162.37 list=PsiphonServer
add address=52.216.169.229 list=PsiphonServer
add address=52.216.171.61 list=PsiphonServer
add address=52.216.192.19 list=PsiphonServer
add address=52.216.228.179 list=PsiphonServer
add address=52.216.237.13 list=PsiphonServer
add address=52.216.239.173 list=PsiphonServer
add address=52.217.0.198 list=PsiphonServer
add address=54.231.33.178 list=PsiphonServer
add address=54.231.73.10 list=PsiphonServer
add address=54.231.121.82 list=PsiphonServer
add address=104.18.151.190 list=PsiphonServer
add address=104.18.152.190 list=PsiphonServer
add address=104.18.153.190 list=PsiphonServer
add address=104.18.154.190 list=PsiphonServer
add address=104.18.155.190 list=PsiphonServer
add address=151.101.180.179 list=PsiphonServer
add address=151.101.180.249 list=PsiphonServer
add address=151.101.181.194 list=PsiphonServer

In this example the users are connected in the ether2 interface

/ip firewall raw
add chain=prerouting in-interface=ether2 dst-address-list=PsiphonServer action=drop comment="Block Connection to UltraSurf"