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Last updated: September 1, 2015

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  1. Sysop X.

    Sysop X.

    Linux,Unix,Amazon EC2 (AWS),Load Balancing,High Availability

    Pakistan - Tests: 9

    Working with Linux/Unix system for more than 10 years. During this time I have designed, managed and secured various Linux based systems for my clients. Projects involving Web servers, Proxy servers, DNS servers, Database servers, Cpanel/WHM, Firewalls, App servers, Shell Scripting and Automation, Virtualization, Load balancing, High Availability, Cloud computing, Amazon AWS and overall system Security. I have also worked with various Embedded Devices, designed Linux based OS for such devices and Reverse Engineered protocols and communications. ==== Skills ==== ## Operating Systems : RHEL, CentOS, FreeBSD, ubuntu, Debain, SUSE etc ## Linux/Unix Servers : Dedicated,Virtual Dedicated(VPS),Shared Hosting ## Cloud Infrastructure Setups: EC2, Rackspace, Eucalyptus, Nimbula, CloudStack, OpenStack ## Cloud Management Setups: scalr, rightscale, enstratus ## Virtualization Setups: XenServer, Vmware, RHEV, VirtualBox, KVM ## Server Migration: cPanel, Plesk, Webmin/Virtualmin, Wordpress, Drupal, Magento, Joomla ## Network Storage: NAS, SAN ## Network File Systems: NFS, GFS, GlusterFS, AFP, SMB, Amazon S3 ## Redundant Storage: Hardware and Software RAID ## Service Optimization: apache, nginx, MySQL ## Monitoring Setups: BB, MRTG, Nagios, monit, munin, cacti, zabbix, zenoss ## Automation: Standard and Custom Backup solutions and other shell scripting. ## HA & FailOver: Database, DNS and WebServer Clustering/Replication and Content Distribution (CDN) ## Email Setup: Mass Mailing, Spam Filtering, DKIM, SPF, SenderID, Amazon SES ## Network/Server Security: Authetication, Firewall, IDS/IPS, AntiVirus/AntiMalware, DMZ, VPN, Amazon VPC, Logging ## System Hardening: Kernel/Software Patches, upgrades, unix permissions and user access control, file integrity solutions etc ## Security Compliance: PCI, GLBA, HIPPA ## Incident Response: Dis-infection from rootkits, viruses, worms, trojans and other malware.

    $33.33 /hr
    20 hours
  2. Yuriy N.

    Yuriy N. Agency Contractor

    Freeswitch/Asterisk/OpenSIPS/Kamailio/Linux/Network/VoIP Enthusiast

    Russia - Tests: 1 - Portfolio: 1

    Telecom Software and Network Engineer more than 6th years in companies - communication providers. I have extensive experience with deploying a complete infrastructure of voip provider, using OpenSource telephony technologies such as freeswitch, asterisk, OpenSIPS\Kamailio, kazoo, etc. Mostly I'm dealing with emerging startups or with small but accomplished voip companies which want to improve\reorganize their infrastructure; create something new or fix some issue on their network. So it is main area but sure I can help with other projects that correspond to my list of skills.

    Associated with: Nasida

    $40.00 /hr
    1,118 hours
  3. Subhro K.

    Subhro K.

    Expert System Administrator with very strong Programming skills

    United States - Tests: 7

    A very talented system administrator and a developer who can think out of the box. I have been working with some of the leading technologies in the market. My skills include but are not limited to: 1. Linux Server Administration 2. Solaris/OpenSolaris Server Administration 3. FreeBSD Server Administration 4. Setup and Administration of Mail Servers (Eg: Postfix) 5. Setup and Administration of Web Servers(Eg: Apache, Nginx, Lighttpd, nodejs) 6. Setup and Administration of various Application Servers.(Eg: JBOSS, Tomcat, Ruby on Rails, Django, Wordpress, Joomla) 7. Setup and Administration of Virtual Infrastructure like Xen, Vmware 8. Setup and Administration of Cloud servers like Amazon EC2, Rackspace. I am also well versed in programming/scripting languages like Perl, C, Objective C and Ruby. I am extensively into Developing iPhone Applications.

    $27.78 /hr
    11 hours
  4. Nikitas Skemvris

    Nikitas Skemvris

    Systems Administrator and IT Engineer

    United Kingdom - Tests: 6

    I am an experienced Systems Administrator, having worked for many years with a broad range of fairly complicated technologies, products and tasks. I like to understand how an implemented system works and dislike relying on trial-and-error or luck. I am eager to analyze the costs and benefits of alternative solutions, examine the requirements of each situation and make informed suggestions on how they could better be served. I draw real satisfaction from automating routine tasks that would otherwise require human labor. I prefer to work with Unix-like systems, but I have long experience in administering and supporting Windows Servers as well. Key Skills: • Hardware: Assembling computers, identifying and replacing faulty parts • Common Office software: Word/Excel/Access/Powerpoint • Systems Administration: GNU/Linux (Slackware, Gentoo, RedHat/CentOS, ArchLinux, Debian), FreeBSD and Windows Operating Systems • Designing and Implementing secure IP Networks based on Ethernet and WiFi • Installing and customizing numerous Network Service software, including: Postfix, Dovecot, Apache, Nginx, Varnish, MySQL, PostgreSQL, BIND, PowerDNS, NFS, Samba, OpenSSH, NTPd, Squid, Rsyslog • Relational Databases: SQL • Firewalls and Traffic Control: Iptables, Iproute2, PF • Virtualization: Vmware ESXI, Microsoft HyperV, Linux Vserver, OpenVZ, FreeBSD Jails • Languages: Python, Ruby, PHP, PERL and BASH (Note: I don't consider myself a Software Developer, but I am able to develop small applications that automate routine tasks or import/export/analyse/present data in helpful ways, following proper programming practices)

    $15.56 /hr
    0 hours
  5. Muhammad Attique

    Muhammad Attique

    InfoSec Expert, Ethical Hacker, Penetration Tester, Security Analyst

    Pakistan - Tests: 12 - Portfolio: 6

    Provide efficient and timely solutions in Network / System Administration and Information Security. In-depth knowledge and expertise in Ethical Hacking, Penetration Testing and Securing Perimeter. Keep myself up-to date with latest InfoSec. technologies, tools, vulnerabilities and their solutions ASAP.

    $16.67 /hr
    4 hours
  6. Bilal Athar

    Bilal Athar Agency Contractor

    Network, Pc and Mac Specialist, Trainer and Help Desk Expert

    Pakistan - Tests: 5

    Entrepreneur - Network & System Engineer - Windows & Mac Help Desk Expert. Have been in field for more than 4 years, helping individuals, industries, SME's and large scale enterprises maximize their productivity with flawless IT Infrastructures. Networking: Cisco Certified Security Professional (CCSP) Cisco Certified Network Professional (CCNP) Cisco Certified Network Associate (CCNA Routing & Switching) System & Server Administration: Apple Certified Support Professional (ACSP) Server Administration Windows Server 2008 (MCITP)

    Associated with: Linktel International

    $20.00 /hr
    52 hours
  7. Alexandr Schelkanov

    Alexandr Schelkanov Agency Contractor

    Linux Administrator/DevOps

    Ukraine - Tests: 2 - Portfolio: 1

    I have great experience in: ✶ Linux/Unix maintaince/troubleshooting (RHEL/Centos/Debian/Oracle EL/Ubuntu/FreeBSD); ✶ Virtualization: (Openvz/Xen/KVM/Jail/Hyper-V); ✶ Cloud solutions (Amazon AWS: VPC/EC2/AWS/S3/RDS/CloudFront/CloudWatch/ELB/Route 53); ✶ Security (Expert in SELinux, AppArmor) ✶ Networking (dhcp, DNS: powerdns/bind; vpn: openvpn/pptp; Firewalls: iptables/ipfw; Proxies: apache, squid); ✶ Web servers (apache, nginx, lighttpd, tomcat, litespeed); ✶ Mail servers (MTA: exim, postfix; Antispam/Antivirus: clamav, spamassassin, amavis; MDA: courier, dovecot); ✶ Automation (shell/php/perl/awk/powershell scripting); ✶ Monitoring (nagios, cacti); ✶ Hosting panels (Cpanel/WHM, Plesk, ISP Manager, Directadmin); ✶ Billing panels (WHM.Autopilot); ✶ Cluster and Linux-HA solutions (RHCS, Heartbeat, Pacemaker); ✶ NAS Solutions (NexentaStor, FreeNAS); ✶ Cluster storages (DRBD, Redhat GFS/GFS2); ✶ Database workload optimization (BerkleyDB, MySQL, PostgreSQL);

    Associated with:

    $15.00 /hr
    0 hours
  8. Andrey Chekanov

    Andrey Chekanov

    Network Engineer / System Administrator

    Russia - Tests: 6

    Planning, building and managing complex networks since 2004, I'm recognized as a Cisco Certified Internetwork Expert (CCIE #22125 Routing & Switching). My area of expertise is not only routing/switching but also all kinds of VPN solutions. Managing FreeBSD and Linux-based servers and various services (web, mail, network related) since 2000. I prefer automation where possible both with well-known software (like Ansible) and self-written tools and scripts (using bash/perl/python).

    $28.00 /hr
    2,046 hours
  9. Andrey Y.

    Andrey Y.

    system engineer / wireless network administrator

    Ukraine - Tests: 4

    Hi! My name is Andrey. I have about 6 years of experience administration of the Wireless ISP network. Have strong knowledge about Mikrotik, UBNT devices. Wide experience of administration of FreeBSD, CentOS from 2009. Also I have experience with : • OS Knowledge: Microsoft Windows from 98 to 8.1, CentOS and some other linux distributions, FreeBSD • Windows services: AD, DNS, DHCP, File Servers, Remote Desktops, WSUS and others • DBs: MySQL, MongoDB • Webservers: Apache. • Virtualization: VMWare ESXi, Proxmox VE. • Monitoring Systems: Zabbix. • NAS: FreeNAS • Gate: pfSense, Mikrotik • Scripting: basic bash. • Networking: TCP/IP, advanced routing, firewall, vpn, iptables, ipfw. • Voip: Asterisk, FreeSWITCH. • Vendors devices: Dell, HP, Mikrotik, Zyxell, Ubiquiti, D-Link, TP-Link, EdgeCore. • Clouds: AWS. • CMS: Wordpress, Joomla.

    $12.00 /hr
    5 hours