Networks and Security

SSL,TLS,HTTP,HTTPS explained

HTTP:

In standard HTTP all information is sent in clear text

Request form browser is made and sent to web server.before that request automatically http is added.

vulnerable to hackers

passwords or credit card information request goes to web server.Somewhere on internet can look at this data and steal that.

HTTPS (Secure hyper text transfer protocol)

It encrypts the data sent between computers and servers.

when we are entering passwords and credit card information

s gets added for requests which are dealing with secure information.

many websites also show padlock symbol.

data is not sent as original text it is sent as encrypted text.

SSL: secure socket layer

protocol that’s used to ensure security on internet.

uses public key encryption to secure data.

when computer connects to website using SSL.

TLS (Transport Layer Security)

The latest industry standard cryptographic protocol.

successor to ssl.

likes SSL it authenticates the server, client, and encrypts the data.

Telnet

Telnet is a command line tool.

No graphical user interface.All requests are sent by commands.

No encryption.

hence easy to hack

provides password and public key authentication.

DNS