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WireGuard site2site VPN

September 29, 2019 by Igor Drobot Leave a Comment

WireGuard(WG) aims to provide a VPN that is both simple and highly effective.
Also to make a really good alternative technology to the existing like IPsec or OpenVPN.


WG is a free and open-source software application and communication protocol that implements virtual private network (VPN) techniques to create secure point-to-point connections in routed or bridged configurations.

I tried WG in a complex high availability datacenter setup and replaced a couple of existing OpenVPN connections with wireguard.
The result was performant and simple at once.

[Read more…]

Filed Under: Linux Tagged With: IPsec alternative, OpeVPN alternative, security, VPN, WireGuard

Upgrade opensuse 15.0 to 15.1

July 17, 2019 by Igor Drobot 4 Comments

openSUSE Leap

openSUSE Leap 15.1 is available at the end of May 2019, and the upgrade process is simple.
Note, that it is always a good idea to:
– look into the upgrade release notes to make sure, you don’t run in any deprecations with your currently running software
– run a backup or a snapshot of the system, which will going to be upgraded.

[Read more…]

Filed Under: Linux Tagged With: Linux, openSUSE, security

OpenSUSE unattended upgrades

February 24, 2019 by Igor Drobot Leave a Comment

I was looking around to find something similar to perform update-automation on openSUSE distribution, just like in Debian GNU Linux.
Some pretty way, without hacking a bash script and adding it to the cron…

It seems, there is a build in solution which is unfortunately configurable out of YaST2.

Install YaST2 module:

[Read more…]

Filed Under: Linux Tagged With: Automation, openSUSE, security, update

Debian unattended-upgrades

February 10, 2019 by Igor Drobot Leave a Comment

UnattendedUpgrades is since Debian 9 a part of default installation.
Only with graphical desktop environment, its activated by default.

For server systems, the following basic configuration is required:

[Read more…]

Filed Under: Linux Tagged With: apt, aptitude, Debian, security, Ubuntu, Updates

Verifying Private Key matches a Certificate

January 29, 2013 by Igor Drobot 2 Comments

Certificate

If you get a certificate from a customer and you should implement it in some piece of software (for example nginx). The first step is to compare the received files.
After this check the displayed hash should [Read more…]

Filed Under: Bash, Debian, HTTP, Linux, Networking Tagged With: OpenSSL, Private Key, security, SSL

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