Dedicated Server Hosting

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If your looking for reliable and excellent webhosting services with superb network connectivity then you may think of getting UK based webhosting service provider for your webhosting requirements. UK dedicated server hosting provider can offer all UK based online business owners a facility for getting reliable hosting experience at very cheap rates, UK based server hosting services is not restricted for UK based business but anyone can get UK based webhosting services. As compare to US based hosting services UK based hosting is bit expensive but you will surely get enough hosting resources and good network speed and connectivity if you are located in UK and targeting UK traffic. Having UK based servers or hosting packages will help you for better search engine ranking it’s proven by many experts hence its always better to have a UK based hosting packages if you want to top in UK search results in Google.
You may be paying more for a UK dedicated server than normal hosting packages but the level of reliability which you would be getting would be simply unbeatable and excellent.
If you are planning to offer virtual servers to your clients or for your staff then you can consider getting a high end dedicated server which have the ability to create small virtual environments within same server. thus using such virtual partitions you can assign different tasks to each machine and can improve server performance which will indirectly affect your business to grow.

If you are new to webhosting industry and don’t have time to learn new technology or don’t want to waste precious time for managing your server then you should look for manage server hosting packages. There are many webhost who provides you dedicated server hosting packages with 24×7 live support and free technical support. Its always recommended to search for a reliable webhost who is offering your managed server hosting packages with round the clock free technical support.

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If you are still using Telnet services for connecting your PC to your dedicated server then you should disable it as server security step. Usually all webhost don’t disable telnet services for your server. Telnet uses port 23 by default for operating this service. Its always recommended to use SSH rather then telnet if you want to connect to server. Its more secure then telnet and is widely used by all webmasters.
As Telnet sends all passwords and usernames in clear text format rather then in encrypted form hence its not secure to use this service as there are more chances for getting your dedicated server hacked which will create trouble for your server.

How to Disable Telnet  service for your dedicated server.
1. Login to your server through SSH and su to root.
2. Type pico /etc/xinetd.d/telnet
3. Search line: disable = no in above file and replace No with yes ie disable = yes
4. Now restart the inetd service: /etc/rc.d/init.d/xinetd restart
5. Lastly you need to scan your server to ensure port 23 is closed.
nmap -sT -O localhost
Also run ps -aux | grep telnet and if you find anything other than “grep telnet” as result kill the process.

Disable Telnet for your Dedicated Server

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When it comes for using dedicated server hosting packages its always recommended to get a managed dedicated server hosting account which will offer you system level administration and support for all critical technical issues you may face with your server.
Usually managed server hosting comes with many services like advanced monitoring, load balancing, elevated security, data storage, stress testing, industry-leading technical expertise and content delivery. Thus you are free from server management and hence can concentrate on business more. All Managed server hosting server provider have their own datacenter or rent racks from datacenters, have their own networks, hardware etc.. hence its responsibility of your webhosting service provider to install all required softwares, upgrade them, maintain them and also monitor your server for maximum uptime and security. As a customer even you have full control of your server through Adminstrative RDP or root access as like your webhost.  Although apparently managed dedicated server hosting services are a bit expensive as compare to unmanaged but its worth to pay for server management to your server provider. Managed server hosting is the smart and cost-effective hosting solution if you are looking for 100% network uptime, free technical support, high level of security, and a high-end infrastructure.

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Dedicated Server Hosting

If you are using standard IP table firewall with your linux dedicated server then you need to open few port if you want to use cPanel without any technical problem.

Try to open following mentioned ports if you are using IPtable firewall….

Port : Function
20 : FTP TCP inbound and outbound

21 : FTP TCP,UDP inbound and outbound

22 : SSH inbound

25 : SMTP TCP inbound and outbound

26 : SMTP TCP inbound and outbound

37 : RDATE TCP outbound

43 : WHOIS TCP outbound

53 : DNS TCP/UDP inbound and outbound

80 : HTTP TCP inbound and outbound

110 : POP3 TCP inbound

113 : IDENT TCP outbound

143 : IMAP TCP inbound

443 : HTTPS TCP inbound

465 : SMTP TLS/SSL TCP/UDP inbound and outbound

873 : RSYNC TCP/UDP outbound

993 : IMAP SSL TCP inbound

995 : POP3 SSL TCP inbound

2082 : CPANEL TCP inbound

2083 : CPANEL SSL TCP inbound

2086 : WHM TCP inbound

2087 : WHM SSL TCP inbound

2089 : CP LICENCE TCP outbound

2095 : WEBMAIL TCP inbound

2096 : WEBMAIL SSL TCP inbound

3306 : MYSQL TCP

though most of the above ports are open but its always better if you cross verify.

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Usually we have to open certain port if we want to use it for running some required  application through it. You can follow below mentioned steps for opening any required post which you can use : –

If you are using CSF firewall then login to Dedicated Server as root and just locate csf.conf file which you will have to edit for the enabling required port to open.
For CSF Firewall , the config is located at : /etc/csf/csf.conf
If you are using APF firewall then the config is located at : /etc/apf/conf.apf Where you need to specify the required port number which you want to keep open for some particular application.

Once done make sure you restart firewall after editing above config files…
For CSF:  /etc/init.d/csf restart   /  csf –r
and for APF:   /etc/init.d/apf restart  /   apf –r

That’s all you have successfully opened required port of your dedicated server, Using telnet command ( telnet IP port number ) you can verify if that particular port is opened or not….

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RAID ‘Redundant Array of Inexpensive Disks’ is usually used with dedicated servers where you want  to have multiple harddrive for greater diskspace and fault tolerance. You have different options from which you can choose one as per your requirements like RAID 0 , RAID 1, RAID 5 or RAID 10 with our servers.

If you choose RAID 0 & RAID 1 configurations you need 2 Identical hard drives. Main disadvantage of using RAID 0 is that it doesn’t help you in case of HDD failure where as if you opt for RAID 1 then all data is mirrored on 2nd identical drives which allows you to swap drives in case of failure of one drive. Thus in case of HDD failure on RAID o all data will be lost hence RAID 1 is most preferred option but you don’t have large diskspace as compare to RAID0. Similarly RAID 5 configuration needs 3 identical harddrives where data striping at the byte level is carried out and also stripe error correction information. Thus you can expect excellent results with high performance and good fault tolerance.

Thus while placing order for new dedicated servers you should always choose suitable RAID structure as per your requirements and budget, without RAID, a single dedicated server hard drive failure could result in several hours/days downtime in the worst case scenario that it was necessary to reinstall the operating system from scratch. Using RAID 0 structure you have more diskspace as compare to RAID 1 where you can just use diskspace of single harddrive.. i.e. a pair of 80 GB hard drives will give you 80 GB of storage space, not 160 GB.

If you are looking for Fully Managed Dedicated Server Hosting packages with round the clock free technical support please refer following link  :  http://www.webhosting.uk.com/dedicated-servers-web-hosting.php

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As a server security measure you may need to upgrade kernel version of your linux dedicated server which is an important task.  Using following steps you can easily upgrade kernel version..
Steps : —
login to your Linux Dedicated Server as root user.
You need to check current kernel version using #uname –r
You can download the latest available kernel from kernel.org
http://rpm.pbone.net/index.php3/stat/3/srodzaj/2/search/kernel-2.4.21-47.0.1.EL.src.rpm
rpm -ihv kernel-smp-2.4.21-47.0.1.EL.i686.rpm
Now edit grub.conf and verify if new kernel is available or not. If you need to have this new kernel as default kernel you will have to make sure that it is available before previous one and default option is 0 in /boot/grub/grub.conf

Finally you will have to reboot the dedicated server using  #shutdown -r now
That’s all you have latest version of kernel installed on your server

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For Websites requiring more resources and processing power than what regular web hosting can provide, a full fledge dedicated server is normally the best route to take. Having a full fledge dedicated web server is completely different from normal shared or reseller web hosting account. A dedicated server is dedicated to a single user, the complete server hard drive space and the monthly bandwidth can be utilized by the server owner as he/she wants. For Dedicated Server clients there is no restriction on CPU usage, at any point of time server user can use 100% CPU resources. Multiple websites can be hosted on the server without having to worry about paying hosting fees for each website added.

Dedicated Server clients have to take care of the server security, latest patches, released and updates. The server should always be pathced and upto date. An upto date server is always beyond the reach of hackers. If the server is not regularly patched and updated then a hacker could easily gain access to such server.

Due to such heavy administration tasks, there are two types of dedicated servers offered:

Unmanaged Dedicated Server Hosting : It means that the server provider will not help to maintain the server and that’s the reason unmanaged servers are cheaper than managed servers. Unmanaged server are mostly used by administrators, if you don’t know how a server funtions then better stay away from unmanaged servers, that’s certainly not your cup of tea. Unmanaged servers are usually given with the plain operating system installed or with a control panel if requested. Its completely the server users responsibility to take care of all the security patches, upgrades and the technical issues. In such a situation, it might be worthwhile to hire a system administrator to ensure that the server is always in good condition and free from hackers.

Managed Dedicated Server Hosting : It means that the server provider will take care of maintenance and upgrades. If you go for managed server then the web host will take care of all the above mentioned server administrators responsibilities and you just need to concentrate on your business specific content. Managed dedicated servers comes with Apache, MySQL, mail and DNS server pre-installed along with Spam filter and virus-protection for your server. Control panel is optional. Regular updates are also performed on the server in order to make sure you are always running a secure machine, while benefiting from the latest stable versions of the installed programs.

It should be noted that with a managed dedicated server hosting, the server is usually owned by the company, you are just renting it for the time being.

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If you are looking for upgrading perl version on your cpanel dedicated server then you can use following steps :

You need to check current version of Perl version
# perl –v
You may get following output : ‘This is perl, v5.8.7 built for i686-linux’ if your server have older version.
Now if you need to upgrade perl version on your cPanel server then
1) Download the latest perl installer from cPanel site.
# wget http://layer1.cpanel.net/perl588installer.tar.gz

2) Untar the file as,
# tar -zxvf perl588installer.tar.gz

3) Change the directory to perl588installer
# cd perl588installer

4) Now run the installer file as,
# ./install

5) Check perl modules
# /scripts/checkperlmodules

6) Force a cPanel update
# /scripts/upcp –force

that’s all… now you can check latest version of perl on your dedicated server using ‘perl –v’

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