Ubuntu 19.04 has been just released

Disco Dingo is the name of the new major release. What we know so far is that the new version uses the Linux 5.0 Kernel. It also upgrades its toolchain to introduce new versions like libc 2.29, OpenJDK 11, boost 1.67, rustc 1.31, and updated GCC 8.3, optional GCC 9, Python 3.7.3 as default, ruby 2.5.5, php 7.2.15, perl 5.28.1, golang 1.10.4. QEMU is now updated to version 3.1. And a few other changes are enlisted in the full release notes. Read More

2019-04-18 04:09:00| Networking issue

We experienced an issue in our networking.
A failed power supply device resulted in an issue with some of our networking equipment.
[UTC] 2019-04-18 04:09:00 – An network device experienced an issue during a power outage and failing UPS unit output.
[UTC] 2019-04-18 04:16:28 – Device power was restored. Networking services fully recovered.
An UPS output failed during a short external power supply outage. This resulted in power outage on a networking device.
Measures taken:
UPS unit replaced. Power supply redundancy for core networking devices will be revised.

Enable swap in Linux

Swap or the virtual memory paging mechanism in Linux is an important feature of the operating system. It is crucial for the proper operation of the system, although sometimes it leads to performance decrease. Swapping typically occurs when the physical memory (RAM) of a machine is not enough for all the running processes. When that happens, the operating system takes down some chunks of the RAM (pages) and temporarily writes them on the hard disk to free up some memory. Of course this where the performance cost comes, as the hard disk or even solid state drive is many time slower than the RAM. Besides it’s performance cost, swapping is still a very important process. It allows the operating system to continue it’s normal operation. Read More

Linux 5.0 Kernel has been released

The new major version of the Linux Kernel has just been released. Although it is a change in the major version, in Linux Kernels world that doesn’t necessarily mean huge changes. In this case the new version is just more improvements, bug fixes and patches applied. As Linus Torvalds pointed out in the release notes the Linux Kernel doesn’t do features based releases, and 5.0 is more of a version naming change, instead of going into 4.x with larger numbers. A large amount of those fixes are focused on hardware drivers improvements and features.

Linux Kernel 5.0 is officially released.

Planned maintenance on core networking – Sat, March 02, 2019 – 9:00 – 10:00 UTC

We’ll be performing a planned maintenance on a core part of our network.We are changing several configurations concerning the Layer 2 physical networking.

This might cause several short interruptions during the 1 hour maintenance window on Sat, March 02, 2019 – 9:00 – 10:00 UTC.

If you experience any service disruption outside the maintenance window, please report it through our support channels.

CVE-2019–3924 Mikrotik Dude agent vulnerability

A new vulnerability has been reported in the Mikrotik Dude agent. The issue eventually allows an attacker to proxy requests through the Winbox port on the vulnerable device. The CVE-2019–3924 has been published on February 21st, but there is already an update for the Mikrotik RouterOS that fixes it.

As the vulnerability relies on being able to publicly access the Winbox port, it doesn’t affect router with active firewall.

The issue is fixed in RouterOS versions:

  • 6.43.12 (2019-02-11 14:39)
  • 6.44beta75 (2019-02-11 15:26)
  • 6.42.12 (2019-02-12 11:46)