Knowledgebase
Why Use GNU Nano Vi (or Vim) is a very powerful text editor that comes installed by default with most versions of Linux. It’s also very overwhelming when you’re first learning it! Th...
In CSF firewall, old IP addresses will be automatically removed from /etc/csf/csf.deny file when the ‘DENY_IP_LIMIT ‘ is reached. An example is given below :   root@server [~]# c...
How to view maldet scan logs – Location of maldet (malware detect) logs Maldet (malware detect) scan logs are saved in the server directory /usr/local/maldetect/logs   Comma...
1. What is ncdu? ncdu (NCurses Disk Usage) is an ncurses-based disk usage tool. It provides a disk usage summary in a TUI (text user interface), and also allows you to navigate between directories...
So what is the sticky bit? A sticky bit is a permission bit that is set on a directory that allows only the owner of the file within that directory, the owner of the directory or the root user to ...
The find utility on linux allows you to pass in a bunch of interesting arguments, including one to execute another command on each file. We’ll use this in order to figure out what files are o...
Customer wants to enable only the HORDE webmail interface for his domain and disable the rest. Usually there are three (3) webmail clients (horde, squirrel mail, roundcube). However, I was advised ...
Thanks for your request. I can understand why you would want to look at transferring as the ease of use and all in one place can be quite convenient. When transferring a domain away the rules and...
I guess you all know this: you are connected to your server with SSH and in the middle of compiling some software (e.g. a new kernel) or doing some other task which takes lots of time, and suddenly...
1.) To change domain name to a new domain name in DirectAdmin control panel, first log into user’s DirectAdmin control panel.   2.) Two ways to go into the domain name configuration,...
1.) To change domain name to a new domain name in DirectAdmin control panel, first log into user’s DirectAdmin control panel.   2.) Two ways to go into the domain name configuration,...
You seemed to have cut the actual error out of the bounce back, can you provide this to us in full?   As for mail on an iPhone and MAC this should work without Issues. Here is the settings y...
The following assumed you have root access to your cpanel server.  ImageMagick is one of the most requested add-ons that allows for image manupulation.  Always try to use GD first, if it ...
A web host rents out web server space, which connects files to the Internet. Users receive a username, password and control panel from which they access their web hosting account. Hosts assign acco...
If you are here chances are your server load has spiked and your top of filled with apache or httpd processes.    To Start Lets Find the Process ID VIA "top" You can do this with: top ...
You should be comfortable logging into ssh as root and running Linux commands to follow these instructions. You must be using pure-ftpd on your server. Cxs does not work with pro-ftpd. 1. Create y...
One of the responsibilities of my position is to teach classes.  In addition to the three computer orientation classes for new employees I teach each month, I also give classes on the general ...
In computing, netstat (network statistics) is a command-line tool that displays network connections (both incoming and outgoing), routing tables, and a number of network interface (network interfac...
  <div class="quote-container">   <i class="pin"></i>   <blockquote class="note yellow">   Under Construction!!   <...
Useful CSF SSH Command Line Commands (CSF Cheat Sheet) Difficulty: Hard This article covers some useful CSF SSH Command Line Commands in a “cheat sheet” format. CommandDescript...
Follow the instructions below to cancel a running task in CDP interface. 1. Click on "Task History" in the Main Menu to open the "Task History" screen. Standard EditionAdvanced EditionEnter...
lsof stands for List Open Files. It is easy to remember lsof command if you think of it as “ls + of”, where ls stands for list, and of stands for open files. It is a command line util...
Testing With the Hosts File You may want to view your domain before the DNS changes propagate or you are testing your domain before you point your domain name to us. You can achieve this by editin...
How to download and install prebuilt OpenJDK packages JDK 8 Debian, Ubuntu, etc. On the command line, type: $ sudo apt-get install openjdk-8-jre The openjdk-8-jre package contains just the Jav...
Hello [Firstname], Are you attempting to forward mail from the server here to another location? If so It is likely caused by the forwarders not actually being authenticated. Recently companies h...
Change Your Nameservers with Network Solutions While SuperHeroHosting cannot modify nameservers at third party registrars on your behalf, we can provide you with instructions on how to do so. &...
This has likely happened because a spammer has forged (or spoofed) your email address as the FROM address on spam and you are the recpient of the bounce back messages. The important thing to know a...
A traceroute is a function which traces the path from one network to another. It allows us to diagnose the source of many problems. Note: To be effective, the traceroute MUST be run during a tim...
There is a serious security hole in the way that Apache handles symlinks on shared servers. This allows an exploited account on a server to view .php files owned by other accounts, thus escalating...
    If you’re a linux system administrator you’re probably already familiar with the term “inode”.  For those of you who are not, an inode is basically a ...
You can forward your page to a different page by inserting the following piece of code in your <head> </head> tag: <meta http-equiv="refresh" content="0; url=http://www.example.com/...
cat /etc/release If returns: cat: /etc/release: No such file or directory Use: cat /proc/version OR Try : # cat /etc/*{version,release} or : # cat /etc/issue or : cat /etc/redhat-release ...
This repository contains skype along with purple-skype for Fedora and CentOS/RHEL distributions. None of these packages can be distributed inside the main Fedora repositories due to licensing issue...
Let's say you've been a bit silly and misplaced your root password for your VPS, and have no means to log in to it. There's a variety of ways you can get yourself out of this predicament without ha...
ow do I block an IP address or subnet under Linux operating system? In order to block an IP on your Linux server you need to use iptables tools (administration tool for IPv4 packet filtering and N...
With the sudden rise in SSH brute force attacks, securing SSH is more important than ever. In a shared hosting environment, you options are somewhat limited, but if you have a well defined user gro...
Detecting a SSH Brute Force Attack If you are under a SSH brute force attack, you will likely see something like this in your logs. 1 2 3 4 5 6 7 8 9 10 Jan 26 03:46:0...
One of the more common tasks that needs to be done on live servers is restarting services(such as Apache, mail, ftp, and DNS). A few of the reasons for services needing to be restarted can vary fro...
From SSH Run: /scirpts/pkgacct USERNAME  
    The headlines prove everyday that hackers are more sophisticated today than ever before. They have nuisances and tricks-of-the-trade of which even the most inexperience...
  Today’s digital data thieves are able to gain access to confidential business and customer data through an ever-increasing number of creative hacking schemes. In order to preve...
Pre-Flight Check These instructions are intended specifically for listing compiled PHP modules from the command line. I’ll be working from a Liquid Web Core Managed CentOS 6.5 server, and...
Recently I received the question via email -- "...How do I change user rights under UNIX? I am using Red Hat Enterprise Linux and my background includes Windows network..."   This is one of ...
How do I use chmod and chown command under Linux / Unix operating systems? Use the chown command to change file owner and group information. Use the chmod command to change file access permissions...
# libssh 0.6.3# ============# This should not be confused with libssh2 # Slackware 14.0: libssh 0.5.2# Slackware 14.1: libssh 0.5.4 # Prerequisites:# CMake >= 2.6.0# OpenSSL >= 0.9.8 or lib...
Hello,As we are not specialists in 3rd party mail clients all we can do is ensure the server and webmail are both working, in which they are without issues. This is because there are so many things...
Hello, I see the domain is active but the Hosting account was suspended as there was SPAM Generating from the Out Dated WordPress Install. We had to take immediate action against your site as it...
Hello [FIRSTNAME],Your account had to be suspended today because it was found to be compromised and sending spam from the system. The account has flooded the mail Queue with around XXXX Sent emails...
What is mod_deflate? Mod_deflate is an apache module that can be used to compress data using gzip compression before sending it to the user. For bandwidth intensive websites, using this feature ca...
FormMail FormMail is a very popular method of emailing the contents of a form to a user. It is relatively easy to set up and does its job well. However, one thing about FormMail is the numerous exp...
chattr (Change Attribute) is a command line Linux utility that is used to set/unset certain attributes to a file in Linux system to secure accidental deletion or modification of important files a...
ZIP – Cross PlatformFirst up is ZIP one of the most commonly used compression techniques used across all platformsTo compresszip -r archive_name.zip folder_to_compressTo extractunzip archive_...
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