Adding SHA-2 to tinyca

Google has announced a sunset for SHA-1 certificate signatures in Chrome. SHA-2 (aka SHA-256, SHA-384, and SHA-512) is the remaining option for certificate signatures. I decided to upgrade my certificates to SHA-2 (256 bits). However, when I tried to use tinyca2 to generate a SHA-2 certificate, I found it was not supported. As tinyca2 is… Continue reading Adding SHA-2 to tinyca

Disable TraceClassUnloading in Java 6

I recently discovered logs filling up with log messages for classes being unloaded during garbage collection. After a little research, I found that the TraceClassUnloading switch gets turned on by the Xloggc switch. After a little testing, I found that this can be resolved by adding the argument -XX:-TraceClassUnloading after the -Xloggc argument.

Securing your Email Reputation with SPF

SPF (Server Policy Framework) is a simple means to limit the ability of others to forge your identity in email. I first implemented it after a forged identity under my domain was used to send Spam. Once SPF was configured,  the bounce messages quickly dropped off. Although not as frequently implemented as sender address checks, SPF… Continue reading Securing your Email Reputation with SPF

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