Ports


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PORTS

PORTS - In TCP/IP and UDP networks, a port is an endpoint to a logical connection and the way a client program specifies a specific server program on a computer in a network.

Some ports have numbers that are pre-assigned to them by the IANA (Internet Assigned Numbers Authority), and these are known as well-known ports (specified in RFC 1700).

Port numbers range from 0 to 65536, but only ports numbers 0 to 1024 are reserved for privileged services and designated as well-known ports. This list of well-known port numbers specifies the port used by the server process as its contact port.

WELL KNOWN PORT Numbers

15 Netstat
20/21 FTP
22 SSH
23 Telnet
25 SMTP
53 DNS
67/68 BOOTP
69 TFTP
79/49 TACACS+
80 HTTP
88 Kerberos
110 POP3
111 Port Map
119 NNTP
123 NTP
137-139 NetBIOS
143 IMAP
161 SNMP
389 LDAP
443 SSL
445 SMB
500 IPSec
520 RIP
546/547 DHCP
636 SLDAP
1512 WINS
1701 L2TP
1723 PPTP
1812/13 RADIUS
3389 RDP

 



 



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