[请教]怎样用iptables屏蔽掉不需要的端口

terminator

use lsof to figure out which process listens on a port.

learn to fix problems under linux without reboot unless you upgrade a kernel, otherwise, you are not suitable for using linux, Windows is the best choice for you.

hyoga

i have no lsof tools in my LFS.
i just did "upgrade a kernel",so i have to reboot it.
but i know the problem wasn't settled,so i will learn after i back.