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 pass phrase: pass Verifying – Enter PEM pass phrase: pass   Now, we use the [...]

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 advise disabling pf on gre0 and enc0 until you have the encrypted tunnel working, this [...]

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 9999 and redirect output to “backup.file” server# nc -l -p 9999 | \\ openssl aes-256-cbc [...]