Usually it is seen that most of the attacks and exploits always use /tmp folder to work out of any propagate themselves. By mounting /tmp with noexec and nosuid (meaning executable cannot be run from /tmp nor with escalated privileges), hence this will stop many of these exploits from being able to do any harm for your server. You can also do it by adding following entry in “/etc/fstab”

none /tmp tmpfs nodev,nosuid,noexec 0 0

Once done save the file and reboot your VPS, now vps get mounted with “nosuid” and “noexec” hence you have secures your /tmp partition.

As a part of security you should also ‘turn off‘ daemons and services which you are not using. Any services that allows a connection to be established to your server is always used by hackers to gain access for your server hence to reduce security risks, you should disable all such unused services / daemons for security reasons.

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Recently Parallels came up with its new version of popular control panel Plesk, you can now have Plesk 9 as latest version which can be used on your server. it’s a new multilevel control panel using which you can manage your hosting accounts and can automate web hosting solutions for small business and reseller hosting accounts.
You would be having 5 login levels each having its own permission and unique features.

Administrator – It’s the highest level and user with administrator control have all permissions using which they can easily setup system services and can mange their server.
Reseller – Similar to administrator but don’t have ability to manage system services.
Client – it’s the 3rd  login level where user have very limited access for their hosting accounts like creating domains etc…
Domain Owner – 4th tier login level where user just have permissions for single domain administration.
Mail User – Individual mail account users can manage passwords, spam filters and antivirus settings.
Resellers level. Resellers level is the new addition in Plesk 9, giving resellers the ability to manage and create their own clients and domains. Also using this level a resellers account holder can also distribute other services such as application hosting and databases as per his requirements and even for a single client basis.

If you are looking for installing Plesk 9.0.0 on your linux VPS hosting package then you should have any of the following OS installed on your VPS.
* RedHat Enterprise Linux 4
* RedHat Enterprise Linux 5
* CentOS 4
* CentOS 5
* Fedora Core 4
* Fedora Core 5
* Fedora Core 6
* Fedora 7
* Fedora 8
* openSUSE 9.3
* openSUSE 10.0
* openSUSE 10.1
* openSUSE 10.2
* openSUSE 10.3
* New!openSUSE 11
* SUSE Linux Enterprise Server 9
* SUSE Linux Enterprise Server 10

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