RT-N66U :: how to disable services

Hi! I haven an RT-N66U with
Operation Mode:Access Point(AP) mode
Firmware Version:3.0.0.4.354

i closed whatever services i could and yet i have a huge number of open ports and i am very uncomfortable that i do not have control over my device.
Any idea how can i close the running unneeded services?

Thank you!
Adrian

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:5473 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:18017 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:3394 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:printer 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:laserjet 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:9998 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:8443 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:3838 0.0.0.0:* LISTEN
udp 0 0 0.0.0.0:59403 0.0.0.0:*
udp 0 0 0.0.0.0:9999 0.0.0.0:*
udp 0 0 localhost.localdomain:38032 0.0.0.0:*
udp 0 0 0.0.0.0:42000 0.0.0.0:*
udp 0 0 0.0.0.0:5474 0.0.0.0:*
udp 0 0 0.0.0.0:18018 0.0.0.0:*
udp 0 0 0.0.0.0:38000 0.0.0.0:*
udp 0 0 0.0.0.0:43000 0.0.0.0:*