Protocols Flashcards
Full Name; Port #; purpose:
TFTP
Trivial File Transfer Protocol; 69; allows a client to get a file from or put a file onto a remote host, unsecured
Full Name, Port #; purpose:
SSH
Secure Shell; 22; gives users a secure way to access a computer over an unsecured network
Full Name; Port #; purpose:
Telnet
Tele Communication Network; 23; provides a command-line interface to communicate with a device; unencrypted
Full Name; Port #; purpose:
SMTP
Simple Mail Transfer Protocol; 25; 465 secured version; send out email
Full Name; Port #; purpose:
TACACS+
Terminal Access Controller Access-Control System Plus; 49, allows a client to accept a username and password and send a query to a TACACS authentication server
Full Name; Port #; purpose:
DNS
Domain Name Server/Service; 53; translates domain names into IP Addresses
Full Name; Port #; purpose:
HTTP
Hyper Text Transfer Protocol; 80; provides a standard way for web browsers and servers to talk to each other
Full Name; Port #; purpose:
HTTPS
Hyper Text Transfer Protocol+ Secure Socket Layer; 443; ensures the protection, integrity, and privacy of the data exchanged between a server and a client (usually a browser)
Port #; purpose:
Kerberos
88; provides strong authentication for client/server applications by using secret-key cryptography
Full Name; Port #; purpose:
POP3
Post Office Protocol 3; 110; 995 for secured version; receives emails;
Full Name; Port #; purpose:
IMAP
Internet Message Access Protocol; 143; 993 secured version; receives emails and leaves a copy on the server
Full Name; Port #; purpose:
SNMP
Simple Network Management Protocol; 161 for sending and receiving requests; 162 for receiving traps from managed devices.
Full Name; Port #; purpose:
RDP
Remote Desktop Protocol; 3389; used by Terminal Service client devices for client-to-server session communication
Full Name; description:
IPSec
Internet Protocol Security; Tunneling Protocol they encrypts IP
IPSec (Tunnel)
IPSec in tunnel mode encrypts entire packet
IPSec (Transport)
IPSec in transport mode only encrypts data
Full Name; description:
PPP
Point to Point Protocol; Established layer 2 connection between two network devices
Full Name; decription:
NAT
Network Address Translation; translates IP addresses across two different networks. Typically between a private and public IP network
Full Name; description; uses:
PAT
Port Address Translation (aka NAT Overload), 1 to many NAT translation; uses layer 4 ports to organize connections
Full Name; description; uses :
TLS
Transport Layer Security; Encryption protocol that replaced SSL; Commonly used by HTTPS on port 443
Full Name:
FTPS
File Transfer Protocol + SSL
Full Name:
SFTP
File Transfer Protocol + SSH
Full Name; # of bits; Format:
IPv4
Internet Protocol version 4; 32 bits; Dotted Decimal Format
Full Name; Port #:
IPv6
Internet Protocol version 6; 128 bits; Hexadecimal Format
TCP or UDP?
SSH
TCP
TCP or UDP?
Telnet
TCP; unsecured
TCP or UDP?
DNS
Both
Full Name; Port #; purpose:
FTP
File Transfer Protocol; 20 for data; 21 for control; used to copy files between two computers on the internet
TCP or UDP?
FTP
TCP
Full Name; Port #; purpose:
SCP
Secured Copy Protocol; 22; securely transfers computer files between a local host and a remote host or between two remote hosts
TCP or UDP?
SCP
TCP
Full Name; Port #; purpose:
DHCP
Dynamic Host Configuration Protocol; 67 for server; 68 for client; provides quick, automatic, and central management for the distribution of IP addresses within a network
What are the steps involved in DHCP?
Discover
Offer
Request
Acknowledge
Full Name; Port #; purpose:
LDAP
Lightweight Directory Access Protocol; 389; 636 for secure version; used for accessing and maintaining distributed directory information services over an IP network.
Port #; purpose:
Netbios
137; 138; 139; allows applications on different computers to communicate within a LAN
Full Name; Port #; purpose:
SMB
Server Message Block; 445; used for sharing access to files, printers, serial ports and other resources on a network. Replaced Netbios
What ports are well-known ports?
Ports 0-1023
What ports are known as registered ports?
Ports 1024-49151
Full Name; Port #; purpose:
SIP
Session Initial Protocol; 5060; used for initiating, maintaining, and terminating real0time sessions that include voice, video and messaging applications.
