Ports and protocols Flashcards
File Transfer protocol (FTP)
ports 20 and 21 it trnansfers computer files between a client and server on a computer network. This is an unsecure method and data is being transferred in the clear.
Secure Shell (SSH)
Port 22 is cryptographic network protocol for operating network services securely over an unsecured network and is best known for remote login to computer systems by users.
SSh File transfer Protocol SFTP (PORT22)
Provides file access, file transfer, and file management over any reliable data stream.
Telnet
Port 33 Provides bidirectional interactive text oriented communication facility using a virtual terminal connection. Similar to SSH, but insecure.
Simple Mail Transfer Protocol (SMTP)
Port 25 Internet standard for sending electronic mail.
Domain Name Service (DNS)
Port 53 Hierarchial, decentralized naming system for computers, services, or other resources connected to the internet or a private network. It converts domain names to IP addresses.
Dynamic Host Control (DHCP)
ports 67 and 68 Dynamically assigns an IP address and other network configuration parameters to a client and enables computers to request IP addresses and networking parameters automatically.
Trivial File Transfer (TFTP)
port 69 Transmits files in both directions of a client-server application and is used for booting an operating system from a local area network file server.
HTTP HyperText Transfer
Port 80 Foundation of data communication for the world wide web that is designed for distributed, collaborative, and hypermedia presentation across many devices.
Post Office Protocol v3 (POP3)
Port 110 Used by local email clients to retrieve emails from a remote server over TCP/IP connection.
Network Time Protocol NTP
Port 123 Provides clock synchronization between computer systems over packet-switched, variable latency data networks.
Net BIOS
Port 139 Network Basic Input/Output System. Provides services allowing applications on separate computers to communicate over a local area network for file and printer sharing.
Internet Mail application IMAP
Port 143 Allows email clients to retrieve email messages from a mail server over a TCP/IP connection and allows the end user to view and manipulate the messages as if they’re stored locally.
Simple Network Management SNMP
port 161 Provides collection and organization of information about managed devices on IP networks.
LDAP Lightweight Directory Access
Port 389 Open, vendor neutral, industry standard for accessing and maintaining distributed directory information services.
