TACACS (Terminal Access Controller Access-Control System)
49
FTP (File Transfer Protocol)
20/21
HTTP (Hypertext Transfer Protocol)
80
POP3 (Post Office Protocol)
110
HTTPS (Hypertext Transfer Protocol Secure)
443
DNS (Domain Name System)
53
SMTP (Simple Mail Transport Protocol)
25
IMAP4 (Internet Message Access Protocol)
143
DHCP (Dynamic Host Configuration Protocol)
67/68
SNMP (Simple Network Management Protocol)
63
SNMP UDP (User Datagram Protocol)
161
Telnet
23
NTP (Network Time Protocol)
123
NNTP (Network News Transfer Protocol)
119
SSH (SECURE SHELL)
22
LDAP (Lightweight Directory Access Protocol)
389
LDAP SSL (Secure Socket Layer)
636
TFTP (Trivial File Transfer Protocol) UDP
69
Encapsulation Header (ESP)
50
Authentication Header (AH)
51
L2TP (Layer 2 Tunneling Protocol) UDP
1701
PPTP (Point-to-Point Tunneling Protocol)
1723
NetBIOS services (udp)
137/138
Kerberos
88
Internet Key Exchange (IKE) UDP
500
SQL Service
156
Remote Desktop (RDP)
3389
Echo
7
RADIUS
1812/1813
IPSec (Internet Protocol Security)
1293
FTPS (FTP over SSL)
989/990
NETBIOS (tcp)
139
SYSLOG
514
ISAKMP (VPN) - Internet Security Association and Key Management Protocol
500
SSL VPN (Secure Sockets Layer Virtual Private Network)
443
Finger
79
SCP (Secure Copy) *uses SSH
22
SFTP (Secure FTP) *uses SSH
22
FTP control port
File Trasfer Protocol
tcp/21
This port is use for communication to find out what you want to transfer ,
FTP Data in active mode Port
File Transfer Protocol
tcp/20
This port is used when data is actually transferred.
SFTP
Secure Shell File Transfer Protocol
tcp/22.
Because it uses SSH to communicate it uses the same port.
FTPS Control Port
File Transfer Protocol Secure Sockets Layer
tcp/990 - this port is use for communication to find out what you want to transfer
FTPS Data in Active Mode port
File Transfer Protocol Secure Sockets Layer
tcp/989
Used for the actual transfer of data
TFTP
Trivial File Transfer Protocol
udp/69
TELNET
tcp/23
HTTP
tcp/80
HTTPS
tcp/442 and 443
SCP
Secure Copy Protocol
tcp/22.
Because it uses SSH to communicate it uses the same port.
SSH
tcp/22
NETBIOS Session Service
tcp/139 (Session Service)
NETBIOS Name Service
udp/137 (name service)
NETBIOS Datagram Service
udp/138 (datagram Service)
SMTP
Simple Mail Transfer Protocol
tcp/25
DNS
TCP & UDP 53.
SNMP
Simple Network Message Protocol
udp 161 and 162
SSL
442 tcp or udp?
TCP or UDP
Port 1024 is reserved for tcp or udp and should not be used anywhere else
BootP AND DHCP
udp/67, 68
POP3
tcp/110
IMAP
tcp 143
Registered Internet Applications Port Ranges
ports 1 - 1024
All port numbers
0 - 65,535
Non-ephemeral ports
permanent ports
Ephemeral ports
temporary ports
Registered Ports
1024 - 49151
What are Dynamic Ports?
(Short lived) Transport protocol ports for IP communications. Allocated automatically by the TCP/IP stack software from the IANA -
What Protocols use Dynamic Ports?
Typically used by TCP, UDP, or Stream Control Transmission Protocol (SCTP)
Dynamic Ports Range
suggested range of 49152 to 65535
Socket
IP address + Port number = socket