[son@in son]$ ping yahoo.co.kr
PING yahoo.co.kr (211.32.119.151) from 202.250.131.183 : 56(84) bytes of data.
From 202.250.131.2: Packet filtered
From 202.250.131.2: Packet filtered
From 202.250.131.2: Packet filtered
From 202.250.131.2: Packet filtered
ping 을 하면 이렇게 나오네요! 왜그런건가요?