Tag Archives: TLS

.NET: Set default SSL/TLS Version to 1.2

Hi,

by default .NET does not uses TLS Version 1.2. So if you disable all SSL/TLS versions lower then 1.2 .NET application could not establish a secure connection anymore.
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SSL/TLS: Enumerate all security ciphers a Web- or Mailserver offers

Hi,

you want to know which security ciphers a particular server supports?
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VMware Workstation: Generate a new selfsigned SSL/TLS certificate

Hi,

the VMware Workstation does not provide a program or script to generate a new pair of key and selfsigned certificate.

If’ve written a batch file which builds a new one. The scripts assumes that the Workstation is installed in the default folder C:\Program Files (x86)\VMware\VMware Workstation and uses the openssl command delivered with the program.

Adjust the Countryname, State, etc. to your own needs. Config is based on the VMware Docs.

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Mail: Connect TLS encrypted to a smtp server by telnet

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

Debian: Setup owncloud with TLS (LetsEncrypt) and protected by AppArmor

Hi,

this Tuturial describes the steps to setup owncloud on top of debian/raspian with lighttpd as webserver and https encryption with certificates sign by Let’s encrypt campain.

Operating System

Install a minimal debian jessie system.

Login as root. On raspbian login as user pi change to root.
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