Hi guys What service use This ports 81, 82, 82, 83 This is Cpanel/ Linux 7.3 Server.

Thanks.:)

From /etc/services:

hosts2-ns 81/tcp #HOSTS2 Name Server
hosts2-ns 81/udp #HOSTS2 Name Server
xfer 82/tcp #XFER Utility
xfer 82/udp #XFER Utility
mit-ml-dev 83/tcp #MIT ML Device
mit-ml-dev 83/udp #MIT ML Device

Thanks RutRow :)