A Journey of a Thousand Miles Begins with a Single Step

Export SSL/TLS certificates with openssl

openssl has a handy way to extract and save certificates for further usage. Comes in handy, if you have to setup e.g. key-stores in Java. This post demonstrates how to export binary and ASCII encoded certificates.

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Connecting to SSL Services with openssl

Currently I have to deal a lot with SSL/TLS. openssl comes in handy to test connections. Also if you have setup 2-way SSL or mutual authentication, it is a good test for the SSL handshake.

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Change key-server URL on GnuPG smart card

I just setup my new Linux development environment. Try to import my GnuPG keys, and failed due the keyserver didn’t exist anymore. This post demonstrates how to change the keyserver and fetch your public key from it.

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Filter messages in JBoss Logging

Working with Hibernate and Oracle DB 10 g lead to a massive amount of warnings on the logs. This post demonstrates how to filter these warnings, if they don’t apply to the situation, in JBoss EAP or Wildfly.

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Setup Postfix TLS with Let's Encrypt certificates

Another usage of the Let’s Encrypt certificates, is to use it for Postfix TLS. On Debian 8 edit the /etc/postfix/main.cf.

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Secure your FTP server with Let's Encrypt certificates

This post illustrates a quick setup for ProFTPD with TLS. It allows only TLSv1.2 secured connections with Let’s Encrypt certificates.

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Disable online search results in Unity

Using the new unity desktop is quite manageable. What annoys me is that every search term in the launcher is also invoking an online search. Therefore I found a quick way to disable it for my user.

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Check SSD cache on HP Pavilion 500-330nz

Just needed to upgrade to Windows 10 on my Desktop. I was curious if the SSD caching still works, but it was hard to find or lookup any information about the Condusiv Express Cache. Finally I could found at least the responsible program.

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Code Review - Boolean's Delight

Did some code review and saw some fancy lines :-( It is about JSON handling with Jackson. Basically is about how to determine that a given JsonNode is not null and a container.

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