Category Archives: Security

How do I determine the expiration date of a p12 certificate?

Posted on December 15, 2008 by jeff

First you will need to translate the pkcs12 certificate into a PEM certificate. The PEM certificate is only needed temporarily and can later be removed. $ openssl pkcs12 -in certificate.p12 -out tempcrt.pem Enter Import Password: MAC verified OK Enter PEM … Continue reading →

Posted in Answers, Security, System Administration | 2 Comments

Setting up IPSec over GRE on OpenBSD

Posted on May 17, 2007 by jeff

This document will explain howto set up an IPSec encrypted GRE tunnel on OpenBSD. In the document, both end points are OpenBSD 4.1 systems, however it should be fairly straight forward to implement on other systems. To start, I would … Continue reading →

Posted in Networking, OpenBSD, Papers, Security | 7 Comments

Q: How do I encrypt file transfers with dd and netcat?

Posted on March 9, 2007 by jeff

A: This question came to us in response to the article Backup Files and Partitions with dd and netcat. Encrypting these files transfers is quite simple. As in the previous article, we will setup the server to listen on port … Continue reading →

Posted in Answers, DragonFlyBSD, FreeBSD, NetBSD, OpenBSD, Security, System Administration | 1 Comment