Page 134 - Webapplication11_C11_Flipbook
P. 134
HTTP request
HTTP response
Client Server
HyperText Transfer Protocol Secure (HTTPS) is a standard protocol for securing communication between two computers,
one using a browser and the other retrieving data from a web server. HTTP is a protocol for exchanging data between
a client and a server. The hypertext format is used by the browser (request) and the web server (answer). HTTPS
is similar to HTTP, except that data is transferred in an encrypted format. As a result, https prevents hackers from
interpreting or altering data during the transmission of data packets.
File Transfer Protocol (FTP)
FTP stands for “File Transfer Protocol,” and it refers to a set of rules that regulate how computers transfer files across
the internet from one system to another. FTP is used by businesses to transfer files between computers, while websites
utilise it to upload and download files from their servers. Program files, multimedia files, text files, and documents,
among others, are examples of file types.
Simple mail transport Protocol (SMTP)
SMTP is a protocol for sending and distributing emails. SMTP is a secure and simple-to-use protocol. Messages are
either delivered to the intended recipient or an error message is displayed explaining why this was not possible.
Ð ÐOne of the functions of an SMTP is to make email message exchange between servers easier. It enables the server
to divide a message into categories that the other server can comprehend.
Ð ÐA sender, a receiver (or, in some cases, many recipients), a message content, and, in most cases, a title heading are
all included in every email message.
Ð ÐEverything gets transformed into strings of text once a message is sent out via the internet.
ÐThe objective of each section of an email is identified by code words or numbers that separate this information.
Ð
These codes are provided by SMTP, and email server software is intended to decode them.
The fact that it is reasonably easy to transmit a message with a fake sender address is a key disadvantage of SMTP.
Many email-based infections spread as a result of this.
SMTP SMTP
Internet
Sender
POP3
Receiver Mail Server
132 Touchpad Web Applications-XI

