Tag Archives: telnet

Linux, miscellaneous, Security

Mail: Connect TLS encrypted to a smtp server by telnet

2 Comments

Hi,

the SMTP protocol is ASCII based. In the past, the SMTP protocol goes unencrypted over the wire means you can simply send emails by connecting to the SMTP port 25 and enter some SMTP commands via telnet:

michael@debdev ~ # telnet smtp.yourdomain.org 25
EHLO test.example.com
MAIL FROM:info@yourdomain.org
RCPT TO:receiver@receiversdomain.org
DATA
Subject: Testmessage
<ENTER>
<ENTER>
This is a test message. End with <ENTER><ENTER> and point

.
QUIT

Continue reading Mail: Connect TLS encrypted to a smtp server by telnet →

Windows knowhow

Windows: Enable or disable Features from command line

2 Comments

Hi,

some usefull tools like telnet.exe are disabled by default in Windows Vista and later version. You can enable this and other features by command line using dism.
dism called with the get-features parameter lists all available features and its current state.
Note: Featurenames are case sensitive.
C:\>dism /online /Get-Features

.....
Feature Name : TelnetServer
State : Disabled

Feature Name : TelnetClient
State : Enabled
......

and the Enable-Feature option install them
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