總結一些知名端口號

協議名	傳輸層協議	端口號
ftp···········································································································數據連接	tcp	20
ftp控制連接	tcp	21
ssh，scp	tcp	22
telnet	tcp	23
smtp email客戶端	tcp	25
dns服務器與客戶端交互	udp	53
dns服務器與輔助域名服務器交互	tcp	53
TFTP	udp	69
finger	tcp	79
http	tcp	80
Kerberos Authenticating agent	tcp	88
POP3	tcp	110
ident old identification server system	tcp	113
NNTP	tcp	119
IMAP3	tcp	220
HTTPS	tcp	443
nfs默認是udp可以選擇tcp	udp	2049(默認)
vnc	tcp	5901