AWS

#131 AWS, Azure: Site to site VPN with strongswan on CentOS 7.x


In this post I’ll describe how to configure a VPN connection between AWS and Azure using strongswan running on CentOS 7.x. I’ll have 2 instances in each cloud for this purpose, I’ll call them vpnA, clientA in AWS and vpnB and clientB in...

SPONSORED

#130: What to Consider When Switching Your Web Host


Throughout the course of its development business requires changes. At the early stages, a simple website on shared hosting or VPS can work pretty well. However, needs increase with its growth. There are different reasons to consider changing a web host....

AWS

#129 vCenter, AWS: Backup VMs in vCenter to AWS S3


In my home lab, I run vCenter 6.7 with several ESXi hosts and since I built the lab I never did any backups. Now that my VMs are not test VMs and they became fairly important, I’ve decided to take care of the backups. Initially, I was thinking of using...

Linux

#128 CentOS: strongSwan site to site VPN using pre-shared key and X.509 certificates


In this post, I’ll explain how to establish a IKEv2 VPN tunnel with strongSwan between two sites with public IPs. The scenario below won’t work if strongSwan is behind NAT, for example if the instances are in AWS or Azure. So, you’ll need...

C#

#127 Visual C#: Screenshot Grabber – Take screenshots automatically


I needed a tool that takes screenshots at a regular interval. No bells and whistles, just simple tool where you can specify at what interval you can take the screesnhots, the destination folder and the monitor (if you have more than one). It looks like this....

DevOps

#126 Chef: Deploy WordPress on CentOS 7


In this post, I’ll describe how to create a Chef cookbook for deploying WordPress. The blog engine will run on CentOS 7 using MariaDB and PHP. The website will be created as a virtual host and you can leave the firewall and SELinux as is. There are...

FreeBSD

#125 ssh, RDP: Bypass your corporate firewall


If you are behind a firewall and want to access some resources over SSH or RDP, most likely you won’t be able to do that. It’s because most of the corporate firewalls allow only ports 80 and 443 outbound. But you can still bypass that by tunneling...

FreeBSD

#124 postfix: relay client e-mails using SASL and TLS


I have a bunch of test CentOS/FreeBSD servers and I wanted to get all the notifications sent to my e-mail instead of logging to each server and check the status of each one of them. Some of my servers are behind my home network where outbound port 25 (SMTP)...