ïî÷åìó îòêðûòû ïîðòû ïî-óìîë÷àíèþ?

[Pulse]

ñêàíèðóþ ïîðòû èç âíå.
Address : moi_ip
Ping .... Ok, Time : 56
Port 21 ... Ok !
Port 25 ... Ok !
Port 110 ... Ok !
3 (of 24) open port(s) detected

îòêóäà? íè÷åãî íå îòêðûâàë ïðèíóäèòåëüíî, êðîìå ïèíãà.
ftp îòêëþ÷åí â âåá-ìîðäå.