Today, under the immense threat of hacker and virus technologies, and for the security of commercial and policy information, many government agencies, military units, financial and insurance institutions, high-tech enterprises, and large conglomerates have begun implementing tiered management of critical data based on information importance. For example, employees in different positions …
With password-based authentication so prevalent, you may need a password management tool. There are various options varying in complexity, UI, and target environment. This article explains how to use pass on the command line.
With password-based authentication so prevalent, you may need a password management tool. There are various options varying in complexity, UI, and target environment. This article explains how to use pass on the command line.
In Linux systems, the top command displays the real-time status of running processes, showing useful information such as CPU utilization, memory consumption, and per-process details. But did you know there's another command-line tool called 'htop' that, unlike the tra…
Webmin is an open-source, web-based system administration tool for Unix/Linux. With Webmin, you can set up and install all system services directly from your browser, including DNS, DHCP, Apache, NFS, Samba, and more. So, with this tool, you no longer need to remember every configuration modification …
After installing Ubuntu I suddenly realized I hadn’t set a root password, and without knowing the password I naturally couldn’t access the root user. I searched online and found out what was going on. Ubuntu’s default root password is random, meaning each boot has a new root password. We can enter the command in the terminal sudo p …
After spending time on Ubuntu DNS, you may encounter network issues. This article introduces solutions for configuring DNS and IP addresses on Ubuntu using both commands and configuration files.
Servers sometimes only have one network card. If you need it to handle both internal and external traffic, you’ll need to set up dual IPs. Under Ubuntu 12.04, you can directly modify /etc/network/interfaces and append the following content at the end:auto eth0:0iface eth0:0 inet staticaddress 192.168.2.230netmask 2 …
Recently I needed to use Linux iptables NAT for port mapping, but the interface machine only had one NIC and needed both internal and external network access.
Fix “connect: Network is unreachable” Error Solution: Locate the ifcfg-eth0 file under etc/sysconfig/network/ and configure it as follows: vi /etc/sysconfig/network-scripts/ifcfg-eth0 After opening, if any lines are missing please add them yourself: DEVICE=eth0BOOTPROTO=stati …
