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what is the diffrence betwwen telnet and ssh.this question
is asked by nikhil and i am plasing the answer here insteed
of his personal mail.
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Answer Posted / jitu
SSH stands for secure shell. It looks like telnet.
The main difference between SSH and Telnet is that SSH
transparently encrypts the data between the client and the
server.
When you telnet to a router/switch/firewall/etc then it
say, type your password, every keypress of your password is
transfred across the Internet to our server in cleartext.
This means that if some person on one of the routers
through which the information passes sniffed the packets
then they'had suddenly know your password, letter for
letter!
With SSH, the information is encrypted. So when you type
your password, each letter is "scrambled" before it's sent
over the Internet, and decoded at the other end. The
encryption method is such that, if someone in between the
servers stumbled upon the information, they'd just see a
jumbled noise.
As you might imagine, this increases your security
significantly.
By default, SSH uses port 22 and telnet uses port 23
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