Ports & Protocols Flashcards
What is port 20/21?
FTP
File Transfer Protocol
Port 21 is the control port while port 20 is used to transfer files.
What is port 22?
SSH & SSHFTP
Secure Shell Host - Designed to transmit data through a remote connection.
Secure Shell Host File Transfer Protocol - A completely separate protocol from FTP (it is not compliant with FTP servers) that uses SSH to encrypt file transfers.
What is port 49?
TACACS+
Cisco proprietary protocol used for authentication, authorization, and accounting (AAA) services
What is port 53?
DNS
Domain Name System
Used to associate IP addresses with domain names
What is port 67/68?
DHCP
Dynamic Host Configuration Protocol
This network management protocol is used to assign local IP addresses to devices on a network. It is used to create multiple private IP addresses from one public IPv4 address.
What is port 80?
HTTP
Hypertext Transfer Protocol
Protocol used for websites and most internet traffic.
What is port 88?
Kerberos
Network authentication protocol that allows for communication over a non-secure network.
What is port 110?
POP
Post Office Protocol
E-mail protocol that allows e-mail clients to communicate with e-mail servers. POP provides only one-way communication.
What is port 25?
SMTP
What is port 143/993?
IMAP
Internet Message Access Protocol
E-mail protocol used by e-mail clients to communicate with e-mail servers. Provides two way communication unlike POP.
What is port 161/162?
SNMP
Simple Network Management Protocol
Protocol used to monitor and manage network devices on IP networks.
What is port 389?
LDAP
Lightweight Directory Access Protocol
Used to manage and communicate with directories.
What is port 443?
HTTPS
Hypertext Transfer Protocol Secure
Secure version of HTTP that used TLS for encryption. Most websites use HTTPS instead of HTTP.
What is port 636?
LDAPS
Lightweight Directory Access Protocol Secure
Secure version of LDAP that uses TLS for encryption.
