Does ubuntu allow users to run ESET Smart Security? I am considering upgrading ubuntu from Windows 7 but I'm not sure if it allows the use of outside security programs.
I assume you are talking about the Windows version of ESet Smart Security. The first thing to consider is that ESET smart security is made to run on windows. Software made for one OS generally doesn't run on other OS.
But there is an exception. A software compatability layer called Wine has been written for linux which allows you to run Windows software in linux. You can run many windows software & games using it. However not all windows software works.
Antiviruses, firewalls and sandbox software don't generally run well under wine. Trust me I've tried.
There is also the free "Clam TK".
Imp: You don't have to remove Windows 7 to install Ubuntu. You can dual boot them.
Note: Also linux IMHO doesn't need an antivirus. Not many viruses have been made for linux and also linux has a more secure environment. Linux malware are extremely rare.
Lets put things clear:
- ESET Antivirus (the Windows version) wouldn't do any good in your Linux.
- Linux has a poor compatibility with malware and a high security scheme by default, from the first moment you boot up, that makes it unlikely target for virus.
- The only reason why using an antivirus in linux is to not allow spreading of malicious files to windows systems, that is, to help stop virus from infecting virus systems.
- You can't (or is too difficult for being feasible) run a Realtime Windows Antivirus on Linux using Wine. Wine is just a compatibility layer meant to allow certain windows programs to run in linux, it won't make your system magically run windows applications as if it were native.
You can have an antivirus in Linux, you must if you share files with Windows, you shouldn't install a Windows antivirus in Linux, you could be more at peace if you think things calmly.
For most Linux distributions you do not need anti-virus software - but you can get Linux ones, like ClamAV, which will run on Ubuntu.
There is a page on the eset site - http://www.eset.co.uk/Home/NOD32-Antivirus-Linux - which says it will run on Linux, but I don't know how.
You don't really need to have anitvirus software for Ubuntu and other Linux systems, as it has so little market share against other systems like Windows and Mac OS, meaning that virus writers would not gain much from them.
Also, Linux is much better security wise than systems like Windows, which seems to have the security holes built in. Viruses, and other forms of malware can still pose a threat, the same with all computer systems, but not as much as would be posed to Windows or Mac.
There is this article which explains this some more.