Situation I received a demo of the C-Terra VPN version 4.3 for three months. I want to figure out if my engineering life will be easier after switching to the new version. Today, it’s not difficult; one sachet of 3-in-1 instant coffee should be enough. I will explain how to obtain demos. I will try to collect GRE-over-IPsec and IPsec-over-GRE schemes. How to get the demo From the diagram, it follows that to obtain […]
My name is Viktor Yagofarov, and I am involved in the development of the Kubernetes platform at DomClick as the technical lead of the Ops (operations) development team. I would like to discuss our Dev <-> Ops processes, the specifics of operating one of the largest k8s clusters in Russia, as well as the DevOps/SRE practices employed by our team. The Ops Team In the Ops team […]
China has implemented a block on all HTTPS connections that use the TLS 1.3 protocol and the TLS extension ESNI (Encrypted Server Name Indication), which provides encryption for data about the requested host. The blocking occurs at transit routers for connections established from China to the outside world, as well as from the outside world to China. For blocking, packet dropping is performed from the client to the server, and […]
One of the main trends in the access control systems market is the simplification of integration with other systems: video surveillance systems, fire alarm systems, enterprise management, and ticketing systems. Integration Principles One way of integration is the transfer of SDK software to third-party applications to manage access control system controllers. When using web technologies, implementing SDK functions in JSON API format simplifies the integration process. For integration […]
ansible devops codestyle Hey! My name is Denis Kalyuzhny, and I work as an engineer in the development process automation department. Every day, new application builds are deployed on hundreds of the company's servers. In this article, I share my experience using Ansible for these purposes. This guide offers a way to organize variables in deployment. This guide is aimed at those who are already using roles […]
Tikhon Uskov, Integration Engineer at Zabbix Zabbix is a customizable platform used for monitoring any data. Since the earliest versions of Zabbix, monitoring administrators have had the ability to run various scripts via Actions for checks on target nodes in the network. However, running scripts led to several challenges, including the need for script maintenance and their […]
Several vulnerabilities have been identified in FreeBSD, which have been fixed in updates 12.1-RELEASE-p8, 11.4-RELEASE-p2, and 11.3-RELEASE-p12: CVE-2020-7460 — privilege escalation in the system through manipulation of 32-bit sendmsg calls on 64-bit systems. 32-bit systems and systems with kernels built without the COMPAT_FREEBSD32 option (which is enabled by default in GENERIC kernels) are not affected by this issue. CVE-2020-7459 — lack of proper size checks for data copied to […]
The release of the Apache HTTP server 2.4.46 has been published (versions 2.4.44 and 2.4.45 were skipped), which features 17 changes and fixes 3 vulnerabilities: CVE-2020-11984 — buffer overflow in the mod_proxy_uwsgi module, which can lead to information leakage or code execution on the server when sending a specially crafted request. Exploiting this vulnerability involves sending a very long HTTP header. To protect against this, blocking has been added […]
Company names with the SaaS prefix frequently appear in news, reviews, ratings, examples, and comparisons. Companies providing software as a service on a subscription or on-demand basis have always been in the spotlight, both among users of their services and those looking to invest in fast-growing tech businesses. In 2020, the need for social distancing left its mark on […]
The client interacts with the database. From the website http://corchaosis.ru, by the artist Jonathan Tiong. Besides being a programmer (mainly in Delphi + various DBMS, most recently ORACLE, + a bit of PHP), I have a hobby — buying and selling apartments. I purchase apartments during the construction phase from reasonably reliable developers at favorable […]
August 6, 1991, can be considered the second birthday of the Internet. On this day, Tim Berners-Lee launched the first website in the world on the first web server, accessible at info.cern.ch. The resource defined the concept of the 'World Wide Web' and included instructions for setting up a web server, using a browser, etc. This site was also the first Internet directory in the world, because later […]
The release of Elementary OS 5.1.7 has been presented, positioned as a fast, open, and privacy-respecting alternative to Windows and macOS. The project focuses on quality design aimed at creating a user-friendly system that consumes minimal resources and provides fast boot times. Users are offered their own desktop environment, Pantheon. Original components of Elementary OS are developed using GTK3, […]