Networking 2.1 Flashcards
1
Q
FTP meaning and port number
A
- File Transfer Protocol
- File exchange
- Authenticates with a username and password
- Full featured functionality (list, add, delete, etc.)
- TCP/20
- TCP/21
2
Q
SSH meaning and port number
A
- Secure Shell
- Encrypted communication link that allows remote logins
- A user can connect to a server to transfer information in a more secure manner than other methods
- TCP/22
3
Q
Telnet meaning and port number
A
- Telecommunication Network
- A terminal emulation that enables a user to connect to a remote host or device using a telnet client.
- Unencrypted, data is transmitted in clear text
- SSH is similar but SSH is encrypted
- TCP/23
4
Q
SMTP meaning and port number
A
- Sending email messages from a client device
- Sending email messages between mail servers
- TCP/25
5
Q
DNS meaning and port number
A
- Domain Name System
- Converts names to IP addresses
- UDP/53
6
Q
HTTP meaning and port number
A
- Enables users to retrieve the contents of an Internet page from a web server
- TCP/80
7
Q
POP3 meaning and port number
A
- Post Office Protocol Version 3
- Email retrieval
- TCP/110
8
Q
IMAP4 meaning and port number
A
- Internet Message Access Protocol v4
- Retrieving email messages from a mail server
- Includes management of email inbox from multiple clients
- Port 143
9
Q
HTTPS meaning and port number
A
- Network protocol that secures web traffic via SSL/TLS encryption
- HTTP but secure
- TCP/443
10
Q
RDP meaning and port number
A
- Remote Desktop Protocol
- Share a desktop or application from a remote location
- Microsoft-proprietary remote-access protocol providing users with a graphical interface that allows them to connect to another computer on a network
- TCP/3389
11
Q
NetBIOS/NetBT meanings and port numbers
A
- NetBIOS is a file sharing network protocol
- Allows computers and applications to communicate with network hardware, and allows data to transmit properly over a network
- Older systems use this, newer systems use SMB
- NetBT protocol is to allow NetBIOS services to be used over TCP/IP networks
- UDP/137/138/139
12
Q
SMB/CIFS meanings and port numbers
A
- Server Message Block
- Common Internet File System
- Common network communications method used on Microsoft operating systems allowing those computers to communicate with other SMB computers. AKA File sharing, printer sharing, etc.
- File sharing over IP between computers that use it
- Like NetBIOS but modern and better
- TCP/445
13
Q
SLP meaning and port number
A
- Service Location Protocol
- It allows clients to locate servers and other services on the network.
- TCP/427
- UDP/427
14
Q
AFP meaning and port number
A
- Apple Filing Protocol
- File sharing between systems that use it.
- Used in Apple systems
- Works with SLP (Service Location Protocol)
- TCP/548
15
Q
DHCP meaning and port number
A
- Dynamic Host Configuration Protocol
- A network protocol providing an alternative solution to the manual allocation of IP addresses
- Auto configs IP address, subnet mask and other options
- Dynamic, meaning IP addresses are assigned in real-time from a pool
- Each system is given a lease and must renew at set intervals
- Can reserve IP addresses by using MAC address in the DHCP server
- Quickly manage addresses from one location
- UDP/67/68
16
Q
LDAP meaning and port number
A
- Lightweight Directory Access Protocol
- Store and retrieve information in a network directory
- Commonly used in Microsoft Active Directory
- TCP/389
17
Q
SNMP meaning and port number
A
- Simple Network Management Protocol
- Gather stats from network devices
- SNMP examines and changes configuration parameters of LAN and WAN connected repeaters, bridges, routers, switches, and other devices connected to a network.
- UDP/161/162
18
Q
Differences between TCP and UDP
A
TCP - Transmission Control Protocol (
- Reliable delivery, there are possesses to make sure things go through the network with little problems. - "Flow Control" When data is received, the sender is notified so the amount of data sent is managed. If data isnt received the sender is notified and it resends.
UDP - User Datagram Protocol (Connectionless, this means no “call” is made. Data is sent with no hellos or goodbyes)
- Unreliable delivery meaning no error recovery and no acknowledgement is sent back from the receiver. - No "Flow Control" The sender determines the amount of data transmitted.
