portmaster net/xrdp
edit rc.conf and add 'xrdp_enable="yes"' 'xrdp_sesman_enable="yes"', or run manually with 'service xrdp-sesman onestart' 'service xrdp onestart'
edit ~/startwm.sh to choose window manager to run. Refer to /usr/local/etc/xrdp/startwm.sh for example.