Ports & Protocols Flashcards
How many Ports are there?
What is the first and last port?
65,536
0 and 65535
FTP
File Transfer Protocol
21 TCP
Transfers files from host to host
SSH, SCP, SFTP
Secure Shell, Secure Copy, Secure FTP
22 TCP/UDP
SSH Remotely administers network devices
SCP is Secure Copy
SFTP is Secure FTP
TELNET
23 TCP/UDP
Unencrypted remote administration (do not use)
SMTP
Simple Mail Transfer Protocol
25 TCP
SENDS email over the internet
DNS
Domain Name Service
53 TCP/UDP
Resolves hostnames to IP’s and vice versa
TFTP
Trivial File Transfer Protocol
69 UDP
Simplified FTP to send or get a file from a remote host
HTTP
Hyper Text Transfer Protocol
80 TCP
Internet web browsing
Kerberos
88 TCP/UDP
Used for network authentication using a ticket system in Windows
POP3
Post Office Protocol v3
110 TCP
Receives email from a mail server
NNTP
Network News Transfer Protocol
119 TCP
Used to transport Usenet articles
NTP
Network Time Protocol
123 UDP
Time synchronization
RPC/DCOM-scm
Remote Procedure Call
135 TCP/UDP
Used to locate DCOM ports to request a service from a program on another computer on the network
NetBIOS
137-139 TCP/UDP
Used to conduct name querying, and sending data
IMAP
Internet Message Access Protocol
143 TCP
Receive email from a mail server. Has more featers than POP3
SNMP
Simple Network Management Protocol
161 UDP
Used to remotely monitor network devices
SNMPTRAP
162 TCP/UDP
Used to send TRAP and InformRequests to the SNMP manager
LDAP
Lightweight Directory Access Protocol
389 TCP/UDP
Maintains a directory of users and objects
HTTPS
Hyper Text Transfer Protocol Secure
443 TCP
Secure web browsing via SSL/TLS
SMB
Server Message Block
445 TCP
Provides shared access to files and other network resources
SMTP w/ SSL/TLS
Simple Mail Transfer Protocol with SSL/TLS
465/587 TCP
Send email securely
Syslog
514 UDP
Conducts message logging
LDAPS
Lightweight Directory Access Protocol Secure
636 TCP/UDP
LDAP encrypted securely
iSCSI (Pronounced i-scuzzy)
860 TCP
Used for linking data storage facilities over IP
FTPS
File Transfer Protocol Secure
989/990 TCP
Transfers files from host to host over encrypted connection. This uses only one connection instead of using both port 21 for FTP and 22 for SSH
IMAP4 w/ SSL/TLS
Internet Message Access Protocol w/ SSL/TLS
993 TCP
Receive email from mail server securely
POP3 w/ SSL/TLS
Post Office Protocol v3 w/ SSL/TLS
994 TCP
Receive email from a mail server securely
Ms-sql-s
Microsoft SQL Server
1433 TCP
Receive SQL database queries from clients
RADIUS (Alternative)
Remote Authentication Dial-In User Service
1645/1646 UDP
Used for authentication, authorization, and accounting
L2TP
Layer 2 Tunnel Protocol
1701 UDP
Used as an underlying VPN protocol. Does not have inherent security. Must be paired with IPSec
PPTP
Point-to-Point Tunneling Protocol
1723 TCP/UDP
Underlying VPN protocol w/ built in security
RADIUS (Primary)
Remote Authentication Dial-In User Service
1812/1813 UDP
Used for authentication, authorization, and accounting
FCIP
Fibre Channel IP
3225 TCP/UDP
Used to encapsulate Fibre Channel frames within TCP/IP packets
iSCSI Target (i-scuzzy target)
3260 TCP
The listening port for iSCSI targeted devices
RDP
Remote Desktop Protocol
3389 TCP/UDP
Used to remotely view and control other Windows systems with a Graphical User Interface
DIAMETER
3868 TCP
More advanced replacement for RADIUS
Syslog w/ SSL/TLS
6514 TCP
