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How to edit DNS zone (A, CNAME, TXT) in cPanel (not in WHM) as End User (Domain Owner)

Recently cPanel Inc. introduced Simple and Advanced DNS Zone Editor for the domain owner (server’s end user). It was introduced for cPanel version 11.25 (Release 42213). cPanel provided two types of editor. One is simple editor another one is advanced editor. Using simple editor, domain owners can manage A and CNAME records. However, TXT records... [Read more of this article]

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Using Google’s public DNS service as resolvers in your server

Google recently introduced this service. You can use this service as resolver for your server. Login to your server as root Background current resolver settings: cp /etc/resolv.conf /etc/resolv.conf.backup Open the file using vi: vi /etc/resolv.conf Remove the current entries by pressing dd Put the following lines in the file: nameserver 8.8.8.8 nameserver... [Read more of this article]

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Disallow /cpanel, /webmail to be redirected to ssl/tls ports (2083, 2096)

If you are getting certificate errors while you are trying to visit http://domain/cpanel, the most probable reason is that the error is regarding the issuer. That is most people usages self-signed SSL certificates for the services. The error is not a big issue comparing to the benefits of using secured over Non-secured connections.  However, for some... [Read more of this article]

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Install and configure munin (and munin-node) for Server Monitoring

Munin is an efficient and lightweight Monitoring tool. Its available in ’server’ and ‘node’ packages. You can install server in a single machine and node in all other machines and then view all information/statistical data in server machine. This quick copy and paste howto explains steps needed to setup server and multiple nodes. These steps... [Read more of this article]

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DDOS Protection using APF firewall

Following are steps that will configure your APF firewall on your server : > Open /etc/apf/ad/conf.antidos > Change LP_KLOG=”0? to LP_KLOG=”1? > CONAME=”Your Company” ( Enter Companies Name ) > Change USR_ALERT=”0? to USR_ALERT=”1? ( 1 only if you need alerts for emails ) > USR=”[email protected]” ( Enter the Email Address... [Read more of this article]

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Adding Spell Checker in SquirrelMail in cPanel server

SquirrelMail provides a spell checker plugin but that may not be enabled by default. However, it is easy to install if you have root access to server. Follow the steps to enable spell checking plugin in SquirrelMail: SSH to server as root and run the following command: cd /usr/local/cpanel/base/3rdparty/squirrelmail/config Now run, [see below if the... [Read more of this article]

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Common iptables command, cheatsheet

#!/bin/sh #File: /etc/rc.d/rc.firewall # Immediately log and drop any known abusive IPs iptables -A INPUT -p tcp -s 87.118.104.44 -m limit –limit 1/minute  –limit-burst 10  -j LOG –log-prefix “[DROPPED_NODE]“   –log-level 4 iptables -A INPUT -p tcp -s 87.118.104.44 -j DROP # Allow from any to any on 127.0.0.1/32 iptables... [Read more of this article]

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Cloud Computing and its benefits

What is Cloud Computing Generally, website hosted on a cloud hosting operates on a clustered servers where online operations are not limited to a single server. By handling security, load balance and hardware resources virtually, the website has access to the processing power of a number of servers that are distributed in real time. According to Wikipedia: Cloud... [Read more of this article]

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Disabling strict zone checking in new Bind

Recent versions of Bind distributed by RedHat and CentOS enable strict zone checking at startup time. This setting can potentially cause problems for Bind users with a large number of zone files or syntax errors in individual zone files. As a result, users may experience an inability to restart Bind after a shutdown. cPanel has, immediately, produced... [Read more of this article]

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Delivery to the following recipient failed permanently, Verification failed

Today, I was getting the following error while trying to send email to any account of the server. The mail bounced with the following error messages. This is an automatically generated Delivery Status Notification Delivery to the following recipient failed permanently: [email protected] Technical details of permanent failure: Google tried to deliver... [Read more of this article]

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How to change MySQL database collation?

Usually you will be interested in changing your MySQL collation in order to solve problems with foreign character encodings. The most common case is to change your MySQL collation from latin1 to utf8. This can be done by using phpMyAdmin and following the instructions below: Enter your cPanel and click on the phpMyAdmin icon in the Databases box. Select... [Read more of this article]

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Effective Solutions for 500 error (Premature End of Script Headers)

There may a number of reasons and solutions for it. We listed a few here for your conveniences. File/Directory Permission error: directory is writable by others: (/home/user/public_html/) This could be easily fixed by just changing the permissions of the file/directory in question. You can change the permissions by using the File Manager within cPanel,... [Read more of this article]

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Installing Suhosin by Patching PHP Source

Preparation When you want to install PHP with the Suhosin-Patch you have to first perform some preparation steps. Step 1: Installing the Hardened-PHP Project Signaturekey You should first grab a copy of the Hardened-PHP Project’s Release Signaturekey and import it into your GNU Privacy Guard keychain. (For further information on the usage of... [Read more of this article]

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Installing Suhosin as PHP Extension in Linux

Unlike the Hardening-Patch for PHP, nearly all of Suhosin´s features are within the extension. Therefore you might want to only install the extension and use a plain unpatched PHP. Depending on the system we might already offer binary packages. You can check our Suhosin Downloads page. In that case you only need to activate the extension inside your... [Read more of this article]

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Practical experience of migrating from HyperVM to VDSManager

This is originally posted by JOEsDC in WHT. It may come to use others’ help. I was able to successfully migrate all my hypervm nodes to VDSmanager without any data loss. Here are the steps I took. NOTE: I was running an up to date version of CentOS 5.3 x86_64 on all my nodes. I cannot guarantee this will work for you. Be sure and make a backup... [Read more of this article]

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