ClearOS

Short description: Linux distribution

ClearOS

Developer| ClearCenter
OS family| Linux (Unix-like)
Working state| Current
Source model| Open source[1]
Initial release| 2001; 22 years ago (2001)[2]
|Final release|Latest release}}| 7.8.0[3] / June 23, 2020; 3 years ago (2020-06-23)
Kernel type| Monolithic kernel (Linux)
Default user interface| Web user interface
License| GPL, and others
Official website| clearos.com

ClearOS (also known as the ClearOS System, formerly ClarkConnect[4]) is a Linux distribution by ClearFoundation, with network gateway, file, print, mail, and messaging services.

## Contents

* 1 History
* 2 Features
* 3 Awards and recognition
* 4 See also
* 5 References
* 6 External links

## History

ClearOS is based on CentOS and Red Hat Enterprise Linux,[5] designed for use in small and medium enterprises as a network gateway and network server with a web-based administration interface.[6] It is positioned as an alternative to Windows Small Business Server.[7] ClearOS is the successor to ClarkConnect. The software is built by ClearFoundation, and support services can be purchased from ClearCenter.[8] ClearOS 5.1 removes previous limitations to mail, DMZ, and MultiWAN functions.[9]

As of the ClearOS 6.1 release, the distribution is a full-featured operating system for gateway, network and servers built from source packages for Red Hat Enterprise Linux.[10][11][12]

ClearOS aims to replace, as a small business server, Windows SBS.[13]

## Features

Features include:[13]

* Stateful firewall (iptables), networking and security
* Intrusion detection and prevention system (SNORT)
* Virtual private networking (IPsec, PPTP, OpenVPN)
* Web proxy, with content filtering and antivirus (Squid, DansGuardian)
* E-mail services (Webmail, Postfix, SMTP, POP3/s, IMAP/s)
* Groupware (Kolab)
* Database and web server (easy to deploy LAMP stack)
* File and print services (Samba and CUPS)
* Flexshares (unified multi-protocol storage which currently employs SMB, HTTP/S, FTP/S, and SMTP)
* MultiWAN (Internet fault tolerant design)
* Built-in reports for system statistics and services (MRTG and others)

## Awards and recognition

* August 2009: CompTIA Breakaway — ClearCenter's ClearOS wins 'Best New Product' at CompTIA Breakaway.[14]
* August 2010: CompTIA Breakaway — ClearCenter's ClearOS repeats win for 'Best New Product' at CompTIA Breakaway.[15]
* July 2012: Softpedia — An Open Source, free and powerful network and gateway Linux server operating system[16]
* February 2014: IDG Security Firewall Distributions Review[17]
* June 2015: Small Business Computing — The 5 Best Linux Servers for Small Business[18]
* September 2015: LinuxVoice Service Distro — Group Test (see pages 58-63)[19]

## See also

* Windows SBS
* ClarkConnect
* SmoothWall
* m0n0wall
* SME Server
* Zentyal
* ClearFoundation

## References

1. ↑ "ClearFoundation SVN". http://code.clearfoundation.com/svn/.
2. ↑ clarkconnect.org recycle a tired old computer into an Internet gateway
3. ↑ "ClearOS Server 7.8 Community Edition Released". ClearFoundation. 2020-06-23. https://news.clear.co.com/clearos-server-7-8-community-edition-released/.
4. ↑ A Linux server OS that's fiddly but tweakable • The Register
5. ↑ "DistroWatch: ClearOS". http://distrowatch.com/table.php?distribution=clearos.
6. ↑ "ClarkConnect Is Now ClearOS". http://www.linux-magazine.com/Online/News/ClarkConnect-Is-Now-ClearOS-Enterprise-5.1-Available.
7. ↑ "Linux answer to Windows SBS: ClearOS". http://www.itworld.com/operating-systems/87803/a-linux-answer-windows-sbs-clearos?page=0,1.
8. ↑ "Overview". ClearCenter. http://www.clearcenter.com/Company/company.html.
9. ↑ "Dual WAN Clarkconnect Community". http://ccforums.clearfoundation.com/showflat.php?Cat=0&Number=120462&Main=120460.
10. ↑ "DistroWatch: Development Release - ClearOS 6.1 Alpha 1". http://distrowatch.org/?newsid=06720.
11. ↑ "ClearFoundation: ClearOS Core 6.1 Alpha1". 6 June 2011. http://www.clearfoundation.com/ClearFoundation-Blog/410-clearos-core-61-alpha1-released.html.
12. ↑ Linux Small Business Server Distros » Linux Magazine
13. ↑ 13.0 13.1 The Small Business Server Replacement is Clear(OS) | Linux Magazine[Usurped!]
14. ↑ "Breakaway 2009 Best New Product Winner - ClearCenter". http://bsminfo.com/article.mvc/Breakaway-2009-Best-New-Product-Winner-ClearC-0001?VNETCOOKIE=NO.
15. ↑ "Best of Breakaway 2010 Awards". http://www.comptia.org/news/pressreleases/10-08-12/Best_of_Breakaway_2010_Awards_CompTIA_PitchIT_Contest_Winners_Announced.aspx.
16. ↑ "An Open Source, free and powerful network and gateway Linux server operating system". 5 May 2019. http://linux.softpedia.com/get/System/Operating-Systems/Linux-Distributions/ClearOS-868.shtml.
17. ↑ Mills, Ashton. "Security firewall distributions". http://www.cso.com.au/article/538710/review_security_firewall_distributions/.
18. ↑ Schroder, Carla (June 22, 2015). "The 5 Best Linux Servers for Small Business". http://www.smallbusinesscomputing.com/slideshows/the-5-best-linux-servers-for-small-business.html.
19. ↑ "Server Distros Group Test". LinuxVoice. https://www.linuxvoice.com/issues/018/Linux-Voice-Issue-018.pdf.

## External links

* ClearOS at DistroWatch
* Clark Connect at DistroWatch
* clarkconnect.com
* clarkconnect.org recycle a tired old computer into an Internet gateway
* PointClark Networks
* ClarkConnect becomes ClearOS
* ClearFoundation
* ClearCenter

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