Category: Linux

diagnose network problems

How to diagnose network problems with MTR

MTR is a powerful network diagnostic tool that allows system administrators to diagnose and locate network errors and provide network status reports to upstream providers. mtr combines the functionality of the traceroute and ping...

Univention Corporate Server

Univention Corporate Server 5.0-2 releases

Univention Corporate Server (UCS) is the free to use, innovative platform to efficiently operate and manage server applications and complete IT infrastructures. UCS is optimally suited for the management of distributed, heterogeneous and virtualized...

Iperf network speed

How to diagnose network speed with Iperf in Linux

iperf is a tool for performing network throughput measurements. It can test either TCP or UDP throughput. To perform an iperf test the user must establish both a server (to discard traffic) and a...

WireGuard Linux kernel

WireGuard is on Debian’ kernel

WireGuard is a VPN kernel implementation with few lines of code, prioritizing performance, and simple configuration. It tries to provide high performance while achieving a simple configuration. WireGuard is based on UDP. Data packets...

count http requests

How to count http requests with tcpdump

The statistics of http requests here refer to the statistics of QPS (Queries-per-second), statistics of the top ten most visited URLs. Generally, when doing such statistics, we often use website visit logs to make...

LMDE 4

LMDE 4 “Debbie” released: based on Debian Buster

The Linux Mint Debian Edition (LMDE) uses Debian Stable as the software source base rather than Ubuntu. LMDE was originally based directly on Debian’s Testing branch, but is designed to provide the same functionality...

prevent port scan in Linux

How to prevent port scan in Linux

There are existing anti-port scanning tools on the Internet, such as psad and portsentry, but I find the configuration a bit cumbersome, and the server does not want to install additional software. So I...

configure network Ubuntu

How to configure the network on Ubuntu

How to configure the network on Ubuntu Set IP automatically via dhcp vi /etc/network/interfaces auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet dhcp Restart network sudo /etc/init.d/networking...

hdparm Linux

How to view hard disk information using hdparm in Linux

hdparm provides a command line interface to various kernel interfaces supported by the Linux SATA/PATA/SAS “libata” subsystem and the older IDE driver subsystem. Many newer (2008 and later) USB drive enclosures now also support...

ExFAT Linux

ExFAT file system driver for Linux is coming

After Microsoft opened up exFAT technology and actively added it to the Linux kernel, Linux Kernel 5.4 brought initial support for the exFAT file system . Now, based on earlier code improvements, the new...

IPStorm Botnet

How to prevent SYN flood attacks in Linux

SYN flooding attack refers to an attack method that uses the imperfect TCP/IP three-way handshake and maliciously sends a large number of packets that contain only the SYN handshake sequence. This kind of attack...

Ubuntu 20.04 Snap Store

Ubuntu 20.04 switches to Snap Store

The mailing list for the Ubuntu development team shows that the upcoming release of Ubuntu 20.04 will come with a pre-seeded Snap app by default. ubuntu-desktop and ubuntu-minimal meta-packages have been introduced in the...

Zorin OS

Zorin OS 16.2 released: Ubuntu-based Linux distribution

“Zorin OS is an Ubuntu-based Linux distribution designed especially for newcomers to Linux. It has a Windows-like graphical user interface and many programs similar to those found in Windows. Zorin OS also comes with...