Hi can anyone here can give me suggestion about, whats best linux distro can be used as file server. And also capable on installation Nagios and squid proxy.

All distros can be used as a file server. Just choose the one you are most familiar with.

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Although this is true, depending on experience, Ubuntu through SuSE are very good, SuSE being the biggest one for biz, and Ubuntu being the strongest supported.

A third option would be FreeNAS which is BSD, but very simple to setup, and moderately well supported, although you will need to learn a bit to set it up properly, as it does not use RAID, but ZFS, and though more complex, is actually much more comprehensive as a NAS.

I personally use a mix of Ubuntu, and FreeNAS for my testing and productions depending on the user usage, and skill.
(No Skill I use FreeBSD for garentee's. Some skills and wants to learn, I use Ubuntu <- that way when they call, I know how to help them. :P )

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Hi thank you for the reply. I will try it soon. Most of our computers are running on windows os and i think i need to set up it to Samba, but on some cases i want to changed all computer os in linux because of licensed free. thanks

I'd be inclined to recommend Debian, unless you have objections to SystemD. It's rock-solid stable and has a long version life-cycle; you don't need bleeding edge for a file server--you need reliable.

As TobiSGD said, any good Linux distro would do. This is just my own thoughts.

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