Ports and Protocols Flashcards
1
Q
Port Number 21
A
- Protocol: FTP
- USage: TCP
- Secure Version: FTPS, port 989/990
- Transfers files from host to host.
2
Q
Port Number 22
A
- Protocol: SSH
- Usage: TCP or UDP
- Secure Shell: Remotely administers network devices and systems. Also used by Secure Copy (SCP) and Secure FTP (SFTP).
3
Q
Port Number 23
A
- Protocol: Telnet
- Usage: TCP or UDP
- Secure Version: SMTP with SSL/TLS, port 465 or 587
- Sends e-mail
4
Q
Port Number 25
A
- Protocol: SMTP
- Usage: TCP
- Secure Version: SMTP with SSL/TLS, port 465 or 587
- Sends e-mail.
5
Q
Port Number 49
A
- Protocol: TACACS+
- Usage: TCP
- Remote authentication. Can also use UDP, but TCP is the default. Compare with RADIUS.
6
Q
Port Number 53
A
- Protocol: DNS
- Usage: TCP or UDP
- Secure Version DNSSEC
- Resolves hostnames to IP addresses and vice versa.
7
Q
Port Number 69
A
- Protocol: TFTP
- Usage: UDP
- Basic version of FTP.
8
Q
Port Number 80
A
- Protocol HTTP
- Usage: TCP
- Secure Version: HTTPS (uses SSL/TLS), port 443
- Transmits web page data.
9
Q
Port Number 88
A
- Protocol: Kerberos
- Usage: TCP or UDP
- Network authentication, uses tickets.
10
Q
Port Number 110
A
- Protocol: POP3
- Usage: TCP Secure
- Version: POP3 with SSL/TLS, port 995
- Receives e-mail.
11
Q
Port Number 119
A
- Protocol: NNTP
- Usage: TCP
- Transports Usenet articles.
12
Q
Port Number 135
A
- Protocol: RPC/epmap/dcom-scm
- Usage: TCP or UDP
- Used to locate DCOM ports. Also known as RPC (Remote Procedure Call).
13
Q
Port Numbers 137-139
A
- Protocol: NetBIOS
- Usage: TCP or UDP
- Name querying, sending data, NetBIOS connections.
14
Q
Port Number 143
A
- Protocol: IMAP
- Usage: TCP
- Secure Version: IMAP4 with SSL/TLS, port 993
- Retrieval of e-mail, with advantages over POP3.
15
Q
Port Number 161
A
- Protocol: SNMP
- Usage: UDP
- Remotely monitor network devices.
16
Q
Port Number 162
A
- Protocol: SNMPTRAP
- Usage: TCP or UDP
- Traps and InformRequests are sent to the SNMP Manager on this port.
17
Q
Port Number 389
A
- Protocol: LDAP
- Usage: TCP or UDP
- Secure Version: LDAP over SSL/TLS, port 636
- Maintains directories of users and other objects.
18
Q
Port Number 445
A
- Protocol: SMB
- Usage: TCP
- Provides shared access to files and other resources.
19
Q
Port Number 514
A
- Protocol: Syslog
- Usage: UDP
- Used for computer message logging, especially for router and firewall logs. A secure version (Syslog over TLS) uses TCP as the transport mechanism and port 6514.
20
Q
Port Number 860
A
- Protocol: iSCSI
- Usage: TCP
- IP-based protocol used for linking data storage facilities. Also uses port 3260 for the iSCSI target.
21
Q
Port Number 1433
A
- Protocol: Ms-sql-s
- Usage: TCP
- Opens queries to Microsoft SQL Server.
22
Q
Port Number 1701
A
- Protocol: L2TP
- Usage: UDP
- VPN protocol with no inherent security. Often used with IPsec.
23
Q
Port Number 1723
A
- Protocol: PPTP
- Usage TCP or UDP
- VPN protocol with built-in security.
24
Q
Port Numbers 1812/1813
A
- Protocol: RADIUS
- Usage: UDP
- An AAA protocol used for authentication (port 1812), authorization, and accounting (port 1813) of users. Also, ports 1645 and 1646.
25
Q
Port Number 3225
A
- Protocol: FCIP
- Usage: TCP or UDP
- Encapsulates Fibre Channel frames within TCP/IP packets. Contrast with Fibre Channel over Ethernet (FCoE), which relies on the data link layer and doesn’t rely on TCP/IP directly.
26
Q
Port Number 3389
A
- Protocol: RDP
- Usage: TCP or UDP
- Remotely views and controls other Windows systems.
27
Q
Port Number 3868
A
- Protocol: Diameter
- Usage: TCP or SCTP
- An AAA protocol; can replace the RADIUS protocol.
