http ======> port 80 (Hyper Text Transfer Protocol) 
ftp-data ==> port 20 (File Transfer Protocol - Default Data) 
ftp =======> port 21 (File Transfer Protocol - Control) 
POP3 ======> port 110 (Post Office Protocol version 3) 
SMTP ======> port 25 (Simple Mail Transfer Protocol) 
NNTP ======> port 119 (Network News Transfer Protocol) 
telnet ====> port 23 (Telnet) 
Gopher ====> port 70 (Gopher) 
IRC =======> port 194 (Internet Relay Chat) 
Proxy =====> port 80/8080/3128 (Proxy) 
Socks =====> port 1080 (Socks) 
DNS =======> port 53 (Domain Name Server) 
hostname ==> port 101 (NIC Host Name Server) 
finger ====> port 79 (Finger) 
nicname ===> port 43 (Who Is) 
login =====> port 49 (Login Host Protocol) 
HTTPS =====> port 443 (https MCom) 
imap3 =====> port 220 (Interactive Mail Access Protocol v3) 
NetBIOS ===> port 137 138 139 (NetBIOS) 
NFS =======> port 2049 (Network File Service) 
SNMP ======> port 161 (Simple Network Management Protocol) 
snmptrap ==> port 162 (SNMP TRAP) 
TFTP ======> port 69 (Trivial File Transfer) 
sqlserv ===> port 118 (SQL Services) 
uucp-path => port 117 (UUCP Path Service) 
X Window ==> port 6000 6001 (X Window System)