How to telnet?

Posted on 2011-04-27
Last Modified: 2012-05-11
How to telnet website, mailserver and any many other things to test connectivity?
Question by:VINOD MORE
    LVL 12

    Expert Comment

    telnet server port
    LVL 25

    Accepted Solution

    Usually mail servers will respond.  Not all devices will.

    telnet [ipaddress or servername] 110       ... where 110 is the normal port to get mail as an example.

    user: [name]
    pass: [password]

    then you should get a response from the server / device.
    LVL 1

    Author Comment

    Will get any welcome message? or screen? after successful command execution?
    LVL 5

    Assisted Solution

    If the port is open, you will atleast get connected.  If the port is closed, telnet will close with error 'Connection refused'

    After connecting, it depends on the protocol (application) how to test.

    For example, port 25 for SMTP (Mail)

    or WEB (port 80)


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