Lasantha Indika Amarasinghe
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Lasantha Indika Amarasinghe

Linux System, Network and VOIP Engineer/Admin - more than 10 years


Colombo-10, Sri Lanka


I am an expert in Linux system and network administration, VoIP deployments, system integration for more than 15 years experience, My major expert areas are: >>TCP/IP networking & Security :- Advanced ip routing, forwarding, filtering and firewall with Netfilter Iptables, TCP Wappers, Fail2Ban >>Servers :- Sendmail, Postfix, Dovecot, Courier IMAP, Squirrelmail, Roud cube, BIND, Apache, Nginx, VSFTPD, DHCPD, Squid, Samba, Ziproxy(image compression proxy server), any open source or closed source software in the field >> Proxy and content Swapping : Squid forward and revers mode proxy, Nginx forward and reverse mode proxy with content Swapping(Add click, Tracking modules, Java or any script adding to ... morethe live web content) >> Control Panels :- CPanel installation and administration >>VoIP :- FreeSwtich, Asterisk based products (Bare Asterisk, Elastix, Trixbox, FreePBX or any related), secure RTP streams (SRTP) with Transport Layer Security (TLS) with or without Server Certificate, CRM integration and Dialers >>Monitoring and remote admin :- Log analyzing, Monitoring, Remote desktop, Remote Admin using tools such like Sarg, Nagios, FreeNX, SSh/Telnet >>Scripting :- Bash, PHP, Perl, Curl >>Web and Database :- SQL Server, MySQL, HTML, PHP, Java Scripts >>Inter-networking :- LAN/WAN using Cisco and DLink Routers, Managed and unmanned Switches, Structured cabling and Fiber cabling systems, >>Telecommunication :- Circuit Switching, SDH and PDH, Ip based networks, Transmission, Telecommunication network implementation and maintenance >>Virtualization:- WMWare Exsi 4/5, HyperV, VirturlBox, Zen >>Operating Systems :- Redhat or Dabian based servers such like CentOS, Ubuntu, Dabian etc,. ### My time zone : GMT +5.30 (Asia/Colombo) Pls consider this on hiring me ### Quality of work : Commit to provide 100% not a bit less than that. If I say it can be done .. definitely it is possible. If I say cant .. surely I cant do that. Welcome clients... less

Lasantha Indika Amarasinghe has added 28 portfolio pieces. Create an account to review them.

Work History and Feedback

  • May 2014 - Jun 2014

    Freepbx, zoho and zoiper setup
    It was great working with Lasantha, he is very experienced, easily available and very good in problem resolution. Will hire again.
    3 hours
    $22.22 / hr
    $62.96 earned

  • Apr 2014

    Message annoucement system for VoIP Carrier
    Highly motivated, never gives up until things work as expected !! Excellent post development documentation, able to delivery on very short deadlines ! Highly recommended AA+++
    $133.33 earned
    Fixed Price

  • Feb 2014

    Migrate POP Emails from Earthlink to Hostgator
    Great work. Was able to handle job with minimal supervision and in a very timely manner.
    $55.56 earned
    Fixed Price

  • Sep 2013 - Jan 2014

    Asterisk Solutions Expert
    1 hour
    $22.22 / hr
    $22.22 earned

  • Sep 2013

    enabling SSH in ubuntu 12.04 in HP proliant ML350p Gene8 Server
    I would like to hire him to do many project with my company.
    $22.25 earned
    Fixed Price

  • Jul 2013 - Sep 2013

    Elastix 2.2 call back function.
    The freelancer has made this comment private
    5 hours
    $22.22 / hr
    $99.99 earned

  • View More (5)

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Name Score (out of 5) Time to Complete
Redhat Linux 9.0 General Test 4.60 Top 20% 36 mins
Voice Over IP Test 2.60 Below Average 31 mins
Redhat Linux 9.0 Admin Test 2.75 Below Average 40 mins

Work History

73% Job Success
82 hours worked
36 jobs


As Needed - Open to Offers

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