We are also a strong advocates of open-source ecosystem, and provides consultancy, implementation, and support services for the following open-source products:
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Web servers – apache, nginx, lighttpd
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Firewall - IPCop, pfSense, m0n0wall, Untangle, ClearOS, DD-WRT, IPFire, Mikrotik, Smothwall, Vyatta, Zeroshell, Zentyal
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Application firewall - modsecurity
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DNS servers – BIND
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Proxy / reverse proxy – varnish, squid, nginx
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Network security – OpenVPN, IPSec (OpenSwan), xl2tpd
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High-availability – LVS, Lustre, Heartbeat, Pacemaker, nbd, drbd
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CMS – Drupal, Plone, SilverStripe, Joomla, MODx
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Network monitoring – Zabbix, ZenOSS, Munit, Nagios, OpenNMS, Munin, Ganglia
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Email / messaging system – Postfix, Sendmail, qmail, exim, Dovecot, Courier, Zimbra
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Database – MySQL, Berkeley DB, PostgreSQL, SQLite, memcached (well...not exactly database, but close)
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Virtualization – Xen, OpenVZ, KVM, OpenStack,
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Telephony - Asterisk, FreePBX
If you are looking for other open-source applications that is not listed here, please do not hesitate to contact us. We can probably work out some arrangement!