Network administrator Freelancers

Showing 216 freelancers

Network administrator Freelancers

Showing 216 freelancers

  • Mr

    *** More info at LinkedIn: *** pl.linkedin.com/in/marcinkot/ Systems' Administration - Advanced skills in Microsoft Windows 2003 Server systems' administration (including planning, implementing and maintaining Active Directory services, software deployment and packaging, network administration) - Experience in Linux-based systems' administration (Slackware … more

    *** More info at LinkedIn: *** pl.linkedin.com/in/marcinkot/ Systems' Administration - Advanced skills in Microsoft Windows 2003 Server systems' administration (including planning, implementing and maintaining Active Directory services, software deployment and packaging, network administration) - Experience in Linux-based systems' administration (Slackware and Ubuntu distributions), particularly in networking services (Apache, PHP, qMail, PostgreSQL, MySQL) as well as preparing and maintain web-application’s environment. Programming - C/C++, PHP, HTML, SQL, shell scripting (batch programming, bash) and Perl programming skills making the administrative tasks easier and more efficient. Familiarity with object oriented programming (C++ and PowerShell), java basics. Databases - Maintenance of database servers (MySQL, PostgreSQL, MS SQL) including security, availability and performance aspects. - Planning and implementation of backup and restore strategies. Networking - LAN administration in medium-sized organization, including WAN-LAN interconnection. - Very good knowledge of Ethernet technology (including cooper, fiber-based and wireless medium), very good knowledge of TCP/IP protocol (IPv4 and IPv6), CCNA certificate. - Familiarity of configuration and securing networking devices (Cisco, 3Com). Security and fault-tolerance - Experience in IP traffic filtering and firewall administration – both software-based (iptables, Microsoft ISA 2006) and hardware-based (3Com SuperStack 3 Firewall, Fortigate) implementations. - Skills in implementation of fault-tolerance technologies (OSI Layer 2 – STP/RSTP, Layer 3 dynamic routing protocols – RIP, OSPF, EIGRP).  less

    network-administration 00 more less
    • $30.00 HOURLY RATE
    • 4.4
    • 4 HOURS
    • POLAND
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 9 TESTS
  • SERVER, NETWORK AND INFRASTRUCTURE SPECIALIST

    Over the last 15 years I have had progressive experience in operations, management and delivery of complex IT network and infrastructure of enterprise scale and globally spread organisations. Experience includes LAN, WAN, MEN, ELL, VPNs, International leased circuits, Switching (Cisco … more

    Over the last 15 years I have had progressive experience in operations, management and delivery of complex IT network and infrastructure of enterprise scale and globally spread organisations. Experience includes LAN, WAN, MEN, ELL, VPNs, International leased circuits, Switching (Cisco & HP), Routing, Firewalls, CUCM, SAN (Netapp), Microsoft Windows 2003, 2008, Active Directory, Group Policy, DHCP, DNS, SQL Server, Web Servers, NLBs, ISA/TMG configured as proxy and reverse proxy, Exchange 2003, 2007 and 2010, WAN Acceleration, Data Centres, Branch Connectivity, Clusters/High Availability, VMWare etc. I have had the opportunity to be involved in various projects in several countries in the Middle East, India and UK.  less

    microsoft-visual-basic network-administration 00 more less
    • $27.78 HOURLY RATE
    • 5.0
    • 38 HOURS
    • BAHRAIN
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 7 TESTS
  • VMware, Networks and System Engineer

    A highly efficient, methodical and talented IT professional having considerable experience of developing, implementing and managing networks, data centres, servers and virtual servers. Possessing a broad range of developed skills gained through establishing full IT projects, networks and infrastructures, website … more

    A highly efficient, methodical and talented IT professional having considerable experience of developing, implementing and managing networks, data centres, servers and virtual servers. Possessing a broad range of developed skills gained through establishing full IT projects, networks and infrastructures, website design and development from initial conception to completion, including customer liaison, design, testing and successful implementation within budget, scope, timescales and process limitations in a customer focused, multi-site business environment. Extensive LAN/ WAN/ Hardware/ Software experience. Pro-active approach to working cross-functionally, maintaining the delivery of I.T. services and technology projects.  less

    openx vmware-esx network-administration scrum atlassian-jira 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 716 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 3 TESTS
  • Network Administration

    Providing network support: LAN/WAN monitoring, installation, troubleshooting, traffic traces. Build, deploy network trending tool, latency monitoring, automated alerting and desktop support. I can configure routers switches, firewalls for large and small corporations. Through the course of 15 years in … more

    Providing network support: LAN/WAN monitoring, installation, troubleshooting, traffic traces. Build, deploy network trending tool, latency monitoring, automated alerting and desktop support. I can configure routers switches, firewalls for large and small corporations. Through the course of 15 years in this field and with building network tools I've gained hands on experience building and administrating Sparc, DEC, AIX, SCO and Linux (Redhat, SuSE ) machines. I've had experience building and maintaining DHCP and DNS servers in both Windows and Unix environments, Building, Windows and Novell networks from single server to large corporate trees. I look forward to working with you soon. -Tom O'Neil  less

    network-administration 00 more less
    • $27.78 HOURLY RATE
    • 5.0
    • 8 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
  • Technical Support

    Its been 7 years, and yet active as technical resource and primary point of contact for server and network administration. I have successfully implemented and migrated Postgres Database, Setup windows 2003 Server, and Centos 5.5 as System Administrator. And … more

    Its been 7 years, and yet active as technical resource and primary point of contact for server and network administration. I have successfully implemented and migrated Postgres Database, Setup windows 2003 Server, and Centos 5.5 as System Administrator. And as network administrator constructed structured cabling, deployed and manages switches from small to corporate offices. I am also developing Web design using Dreamweaver, Html, Php and MySql.  less

    vmware-administration microsoft-hyper-v-server network-administration linux-system-administration microsoft-virtual-server domain-migration microsoft-sql-server-administration 00 more less
    • $17.78 HOURLY RATE
    • 5.0
    • 0 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 5 TESTS
  • System Engineer - Administrator

    Over 14 years of experience architecting, deploying, and upgrading systems, including hardware, software, networks, databases, servers, mobile devices, and peripheral equipment. Extensive knowledge of security and disaster recovery applications to ensure complete protection. Strong background spearheading multi-platform solutions to optimize … more

    Over 14 years of experience architecting, deploying, and upgrading systems, including hardware, software, networks, databases, servers, mobile devices, and peripheral equipment. Extensive knowledge of security and disaster recovery applications to ensure complete protection. Strong background spearheading multi-platform solutions to optimize business goals. Excellent communication skills. Able to assess and resolve client issues quickly. Superior ability to manage multiple projects simultaneously in deadline-driven environments. Microsoft Certified Systems Engineer and Microsoft Certified Systems Administrator.  less

    windows-administration microsoft-exchange-server virtualization network-administration network-security network-planning 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 8 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 0 TESTS
  • Software Developer/Database Administrator/Network Administrator (MCSE)

    I aim to provide advice on, develop, implement, and maintain Windows-based systems (including server applications like Microsoft Exchange, Microsoft SQL Server, and SharePoint), Linux desktops and services, SQL server and access databases and applications, Web and desktop applications based on … more

    I aim to provide advice on, develop, implement, and maintain Windows-based systems (including server applications like Microsoft Exchange, Microsoft SQL Server, and SharePoint), Linux desktops and services, SQL server and access databases and applications, Web and desktop applications based on Visual Basic .NET, ASP/ASP.Net, PHP, VBScript, and JavaScript. With my extensive experience in Microsoft Office automation and Windows scripting, I can develop solutions and utilities to help enhance productivity on Windows desktops, servers, and networks. I have suceessfully developed and implemented applications and solutions using: * HTML web development, ASP/ADO.Net web programming, JavaScript programming, including Web-dased database access and querying applications. * Linux, Apache, PHP, MySQL experience. * Customized Content Management Systems (CMS) with PHP and MySQL. * Network and remote backup solutions based on Symantec BackupExec and Acronis. * Custom-built SMS texting/alerting applications. * Microsoft Exchange. * Microsoft SQL Server. * VMware server virtualization. * Citrix-based application distribution (currently evaluating VMware's new ThinApp solution for the same). * Microsoft Visual Studio.  less

    virtualization php mysql vba database-management database-programming .net-framework network-administration powershell 00 more less
    • $38.89 HOURLY RATE
    • 4.5
    • 2738 HOURS
    • UNITED KINGDOM
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 8 TESTS
    GROUPS:
  • Senior System and Network Administrator

    I'm fully working from the last 5+ years as a Linux Administrator . I'm well experienced in Linux Server administration tasks in the production and development environments - Have a good knowledge and hands on experience in Apache, Iptables, Openvpn … more

    I'm fully working from the last 5+ years as a Linux Administrator . I'm well experienced in Linux Server administration tasks in the production and development environments - Have a good knowledge and hands on experience in Apache, Iptables, Openvpn, Sendmail, Postfix, Mysql, FTP, Samba, SVN, Asterisk, Elastix, Mysql replication,Kerio Control, JIRA, Confluence, MantisBT, Redmine, Zabbix servers, Hudson, Bash scripting,ESXI Virtualization etc..  less

    linux-system-administration apache-administration mysql vmware-esx centos network-administration unix-shell zabbix redhat-administration openvpn 00 more less
    • $23.33 HOURLY RATE
    • 5.0
    • 20 HOURS
    • ARMENIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 6 TESTS
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