Application Protocols
(HTTP) Hypertext Transfer Protocol
TCP port 80.
Transmits web traffic on the Internet
(HTML) is the common language
(HTTPS). Hypertext Transfer Protocol Secure
TCP port# 443
🔒displaying a lock icon
(FTP) File Transfer Protocol
uploads and downloads large files to and from an FTP server
FTP transmits data in cleartext,
TCP port 21 for control signals
TCP port 20 for data
(SFTP) Secure File Transfer Protocol
TCP port 22
(FTP+SSH)
(FTPS)** ** File Transfer Protocol Secure
FTP and uses SSL or TLS
FTPS use TCP ports 989 and 990
Telnet.
TCP port 23
Web servers use HTTP to transmit web pages to clients’ web browsers
used to connect to remote systems or devices
Telnet transmits data in cleartext,
PuTTY have similar functionality but include ⚠ SSH
Microsoft SQL Server.
uses port 1433
SQL Server is a server application
UDP
Lightweight Directory Access Protocol (LDAP)
encrypted with either TLS or SSL and uses port 636
TCP port 389.
It provides a mechanism used to connect to, search, and modify Internet directories.
Runs on a layer above the TCP/IP stack.