Common Ports Flashcards
(29 cards)
1
Q
Characteristics of ports:
A
- Ports allow a single host with a single IP address to run network services.
- Each port number identifies a distinct service
- Each host can have over 65,000 ports per IP address
- Port use is regulated by the Internet Corporation for Assigned Names and Numbers (ICANN)
2
Q
ICANN specifies the following three categories for ports:
A
- Well known ports
- Registered ports
- Dynamic ports
3
Q
Well known Ports
A
- Range from 0 - 1023
* Are assigned to common protocols and services
4
Q
Registered Ports
A
- Range from 1024 to 49151
* Are assigned by ICANN to specific service
5
Q
Dynamic Ports (private or high ports)
A
- Range from 49152 to 65535 and can be used by any service on an ad hoc basis
- Ports are assigned when a session is established and ports are released when the session ends
6
Q
20 TCP and UDP
21 TCP and UDP
A
- File Transfer Protocol (FTP)
7
Q
22 TCP and UDP
A
- Secure Shell (SSH)
8
Q
23 TCP
A
- Telnet
9
Q
25 TCP and UDP
A
- Simple Mail Transfer Protocol (SMTP)
10
Q
53 TCP and UDP
A
Domain Name Server (DNS)
11
Q
67 TCP and UDP
68 TCP and UDP
A
- Dynamic Host Configuration Protocol (DHCP)
12
Q
69 TCP and UDP
A
- Trivial File Transfer Protocol (TFTP)
13
Q
80 TCP and UDP
A
- Hypertext Transfer Protocol (HTTP)
14
Q
110 TCP
A
- Post Office Protocol (POP3)
15
Q
119 TCP
A
- Network News Transport Protocol (NNTP)
16
Q
123 TCP and UDP
A
- Network Time Protocol (NTP)
17
Q
137 TCP and UDP
138 TCP and UDP
139 TCP and UDP
A
NetBIOS Name Service
NetBIOS Datagram Service
NetBIOS Session Service
18
Q
143 TCP
A
Internet Message Access Protocol (IMAP4)
19
Q
161 UDP
162 TCP and UDP
A
- Simple Network Management Protocol (SNMP)
20
Q
389 TCP and UDP
A
- Lightweight Directory Access Protocol (LDAP)
21
Q
443 TCP and UDP
A
- HTTP over Secure Sockets Layer (HTTPS)
22
Q
445 TCP
A
- Microsoft Server Message Block (SMB) File Sharing
23
Q
1720 TCP
A
- H.323 Call Signaling
24
Q
2427 UDP
A
- Cisco Media Gateway Control Protocol (MGCP)
25
3389 TCP and UDP
* Remote Desktop Protocol (RDP)
26
5004 TCP and UDP
| 5005 TCP and UDP
* Real-time Transport Protocol (RTP) Data
| * Real-time Transport Protocol (RTP) Control
27
5060 TCP and UDP
| 5061 TCP
* Session Initiation Protocol (SIP)
| * Session Initiation Protocol (SIP) over TLS
28
What do u to protect a server
* Ensure that only the necessary ports are open.
| * EX. If server is being used only for email, then shut down ports that correspond to FTP, DNS, HTTP, etc
29
635 TCP and UDP
Lightweight Directory Access Protocol over TLS/SSL (LDAPS)
