Zend Encoder and Zend SafeGuard Suite are some software’s which encode some files. Zend optimizer is a free application software which runs these files while boosting the running speed of PHP applications. Zend Optimizer is required by many scripts so that you can run the scripts on your server while decrypting and running them on the fly while increasing runtime performance.

http://www.zend.com/store/products/zend-optimizer.php

Installation of Zend optimizer :

Follow the steps given below to install Zend optimizer :-

1) First off grab a copy of the optimizer Linux glibc2.1to install it on your dedicated server. http://www.zend.com/store/free_download.php?pid=1

2) You will have to upload the file on your web server once you have downloaded the file locally. FTP to your server and upload it to a directory of your choice.

3) Now Uncompress/extract the file
tar zvfx ZendOptimizer*.tar.gz
cd ZendOptimizer-2.5.3-linux-glibc21-i386/

4) Now run the installer,
./install.sh

5) The welcome screen

6) The agreement

7) Where do you want to install Zend Optimizer?

Locate your php.ini file

9) Select Yes, chances are you are using Apache web server

10) Enter the location of where apache files are located

11) Zend changing your php.ini file location, make a note of this.

12) Restart your web server for the changes to take effect.

13) Apache should restart successfully.
Note:You may also restart Apache manually using # /etc/init.d/httpd restart

15) Please ensure that Zend Optimizer is working you can do the following in the shell.
php -v

16) After the installation is completed you can remove the directory.
cd to where the extracted Zend first.
rm –rf ZendOptimizer-2.5.3-linux-glibc21-i386

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Follow the steps given below to setup Remote MySQL :

1) Login to WHM

2) Click on SQL Services

3) Click on Setup Remote MySQL Server

4) Enter the name of the remote server in the host section and its password in the Remote MySQL Host Root Password

5) Click on ‘Setup’.

The aobve process is to setup Remote MySQL on Dedicated Server Hosting

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The very first advantage of Linux is the fact that Linux is an open source operating system. This means, you will not have to pay the high licensing fees which you will have to pay if you opt for other operating systems which are available. You are able to download Linux for free and use it. The Linux website can be changed as per the users requirements and the user can even convert the Linux website to the Windows website without much trouble. Linux is very economical as you might have to pay the distribution cost to the host or the owner instead of the high licensing fees which you will have to pay if you opt for other operating systems.

If your website requires scripting languages like PHP, MySQL, or Perl etc. then Linux is the best for you as Linux is reliable and is free which will fulfill all your needs. Web hosting providers generally providers MySQL and PostgreSQL databases with Linux but there are many other databases which are supported on Linux. Linux is the first choice for web designers and programmers and the reason for this is the circles which secure Linux operating system and the server which have Linux as an operating system installed on them.

Due to these reasons which are in favor of the user Linux operating system preferred and this makes the Linux Dedicated server the choice of many users. Apart from all these benefits you will also get the benefits you get with a dedicated server. These are some of the reasons for the Linux Dedicated server to be the choice of many users.

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> 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=”you@yourco.com” ( Enter the Email Address )
> Execute : crontab -e

*/2 * * * * root /etc/apf/ad/antidos -a >> /dev/null 2>&1

This will run anti-dos in two minutes

Once this is done properly, Firewall is Configured on your Linux Dedicated server.

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http://httpd.apache.org/download.cgi

#cd /usr/local/src

#wget http://mirrors.24-7-solutions.net/pub/apache/httpd/httpd-2.2.8.tar.gz

#tar -xzvf httpd-2.2.8.tar.gz

#cd httpd-2.2.8.tar.gz

#./configure –prefix=/usr/local/apache

# make /compile

# make install /install

#cp /usr/local/apache/bin/apachectl /etc/initr.d/

#service httpd stop

#service httpd start

#httpd –v

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# vi /etc/cron.daily/rkhunter.sh

#!/bin/bash
(/usr/local/bin/rkhunter -c –cronjob 2>&1 | mail -s “Daily Rkhunter Scan Report” email@domain.com)

#chmod x /e
#chmod x /etc/cron.daily/rkhunter.sh

#rkhunter –update

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Once the DNS server has the request it resolves the sub-domain and provides the IP address and then the request is sent to the web server which has the IP address. The request can then be moved to the website. Sub-domain configuration can be taken care of by many DNS server entries, and application setup for management of load or applications.

DNS server should point towards the sub domain as CNAME or hostname or MX entry for emails. CNAME or alias is used if the IP address of the main domain and the sub-domain is the same. In case of the load balancing servers, A records are used if the IP points to the different dedicated server.

When the IP address of the sub-domain and the main domain are the same CNAME is used. It means that the main domain and the sub-domain point towards the same IP address :

www IN CNAME domain.com.
subdomain1 IN CNAME domain.com.
subdomain2 IN CNAME domain.com.

A record is setup when the main domain is different from the sub-domain. This is in case of a load balancing or server cluster setup such as :

subdomain1 IN A 123.2.33.45.
subdomain2 IN A 123.2.33.46.

MX records are mail exchanger sub-domains in case of email setup that will be pointing to the dedicated web server IP address and used for different email account such as :

subdomain1 IN MX 10 subdomain1.domain.com.
subdomain2 IN MX 10 subdomain2.domain.com.

Nameserver records is created for the sub-domain if the sub-domain is configured on a different DNS name server. Different nameservers can reduce security issues. The IP address receives request from the DNS server and it starts functioning. It then needs to be configured to manage the request based on the IP address / Host headers. It is utilized by web servers to host different domains / sub-domain on one IP address.

IIS manager is used to add the sub-domains that will be assigned to the IP address in the case of a Windows dedicated server. Port is then set to 80. By clicking on advanced tab nect to IP address configuration for website application host header can be added easily. Sub-domain that points to sub-directory of website which is then home directory for the sub-domain.

In a Dedicated server Hosting , we use Apache web server which is configured by virtual host entry in httpf.conf :

Listen 80
NameVirtualHost *
ServerName www.domain.com
DocumentRoot /home/httpd/htdocs/
ServerName subdomain.domain.com
DocumentRoot /home/httpd/htdocs/subdomain/

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Click on Main menu => Internet => Terminal Server Client

It can be called as an graphical representation to the command line vncviewer and RDP through “tsclient” Command.

Terminal Server Client are the best possible way to connect if you need a remote access. It can also share sessions and supports through VNC, Xnest and Citrix ICA client. Make sure that you have the administrator access to the server once you connect.

Linux Terminal Server Client can also be setup on Dedicated Server Hosting and it’s connection to other applications or Operating System.

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1) Asymmetric load : Backend dedicated servers can be used to share the load on the server. Due to this the performance of the front end servers is improved.

2) Immediate Activation :If by chance the server fails, the backend server can be brought online immediately and this will make sure that the websites do not face any downtime.

3) SSL Load Management :Load balancing hardware can be used to manage all the SSL connections.

4) Protection against DDoS : SYN cookies and delayed binds can work offline and protect from DDoS counter attacks.

5) Compression of HTTP : gzip on web browser to reduce load on the data transfer.

6) TCP Offloading / buffer : Every HTTP request has different TCP Connection.It has the capability to serve every client and will take care of every task on the server.

7) Caching of HTTP :It can store the static data and due to this it is not necessary to retrieve the data everytime which reduces the load on the dedicated server.

Filtering : Filtering and traffic management.

9) Security on HTTP : In order to maintain the high security on the server which is very important it can hide HTTP error page, remove HTTP response and cookie encryptions.

10) Priority Que : Differentiating between decent traffic and bad traffic.

11) Request Switch :As per the URL which is requested the request can be sent to different load balancing servers.

13) Authentication from client : With the help of this no other client can access your website other than the client who has the authentication or say the permission to access the website.

14) Firewall : The connections to the load balacing servers which are not trusted or are unsecured are not allowed on the servers. This makes the dedicated server much more secured.

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Follow the steps below to perform error check of your account:-

1) Log into your Dedicated server Hosting via Secure Shell.

2) Change into the logs folder using the following command: cd logs

3) To view the last 20 lines of the error log file use the following command:

tail domain.com_error_log_date

domain name:enter your domain name

date:enter the date

4) To view the log file in real time use the following command:

tail -f domain.com_error_log_date

domain.com:enter your domain name

date:enter the date

The above steps will display the contents of the error logs. You should be able to review this information to determine the nature of the error you are receiving.

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