Lasantha Indika Amarasinghe
Linux System, Network and VOIP Engineer/Admin - more than 10 years
Last active: 12/05/2014
I am having more than 15 years of Linux system and network administration, VoIP deployments, system integration.
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 the 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.