Network administrator Freelancers

Showing 271 freelancers

Network administrator Freelancers

Showing 271 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
  • Very experienced Systems Architect / Network Architect / Sys+Net Admin

    Thanks for taking a look at my profile! My goal is to help you solve your systems and network issues in the best way possible. I have a wide range of experience and expertise, and if I'm not the … more

    Thanks for taking a look at my profile! My goal is to help you solve your systems and network issues in the best way possible. I have a wide range of experience and expertise, and if I'm not the best person to help you, I will be able to help find the person who is. I'm not going to be the least expensive provider, but I will provide you with the best service!  less

    network-administration 00 more less
    • $166.67 HOURLY RATE
    • 4.6
    • 335 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 16 TESTS
  • Network and Systems Engineer

    Qualification VC- DCV ( Data Centre VIrtualization ) Vmware ACSS - SMB ( AVAYA ) MCSE - 2008 CCNA Network Experience - 5 Years MPLS, BGP,OSP Service Level Provider. System and Virtualization - 5years Vsphere 5.1, Vderecotr Vmware Horizon View. WIntel - Exchange, Forefront, Active Directory DNS … more

    Qualification VC- DCV ( Data Centre VIrtualization ) Vmware ACSS - SMB ( AVAYA ) MCSE - 2008 CCNA Network Experience - 5 Years MPLS, BGP,OSP Service Level Provider. System and Virtualization - 5years Vsphere 5.1, Vderecotr Vmware Horizon View. WIntel - Exchange, Forefront, Active Directory DNS. ( Service Level provider ) Storage - 3 Years EMC and NAS. VoIP AVAYA IP Office IP500v2, IP Office Server edition R9 .OVF virtualize. Application SIP server, One-X Portal/Mobile. Polycom Certified Voice and Network Engineer. Realpresence  less

    network-administration microsoft-small-business-server-administration 00 more less
    • $27.78 HOURLY RATE
    • 5.0
    • 2 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 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
    • 730 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
  • VoIP and Linux Engineer

    Hi. I'm a VoIP engineer, mostly using Asterisk and FreeSwitch. Also have a huge expirience in traditional telephony, also Video-Conferencing systems (Polycom, Tandberg). Excellence knowlege of SIP/H.323 and TCP-IP networking. … more

    Hi. I'm a VoIP engineer, mostly using Asterisk and FreeSwitch. Also have a huge expirience in traditional telephony, also Video-Conferencing systems (Polycom, Tandberg). Excellence knowlege of SIP/H.323 and TCP-IP networking.  less

    asterisk sip network-administration 00 more less
    • $30.00 HOURLY RATE
    • 4.5
    • 17 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 TESTS
  • Network Engineer

    Work Experience: (From April 2010 to Present) Worked at Inbay Pvt. Ltd. [www.inbay.co.uk] as a system administrator (Business to Business). Joined Inbay as a Technical Support Engineer and got promoted to the position of the technical lead … more

    Work Experience: (From April 2010 to Present) Worked at Inbay Pvt. Ltd. [www.inbay.co.uk] as a system administrator (Business to Business). Joined Inbay as a Technical Support Engineer and got promoted to the position of the technical lead – Technical support team (Business to Consumer), then as a system administrator (Business to Business). Inbay is an organization which provides IT Support services for both Business and Consumer markets in UK and US. Duties & responsibilities; • Providing the technical leadership and subject matter expertise in applicable technologies and serving as a point of escalation for technical issues related to specialty. • Identifying, diagnosing and providing timely resolution for level one, level two and three user inquiries. • Identifying risks & issues and taking ownership to deliver appropriate resolutions. • Producing, delivering, and maintaining appropriate documentation for systems in accordance to document control standards and procedures • Supporting and maintaining effective relationships with business and consumer clients. • Providing case status updates to management and end users, developing documents and implementing standard operating procedures and customer service guidelines. • Collaborating with other team members on planning and execution. Hold progress meeting • Leading post-incident debrief sessions with key clients. • Contributing to long-term tactical and strategic planning to ensure that the tools and processes are appropriate to meet the future business requirements. • Reviewing, and updating as appropriate, operations procedures, standards, and technical policies. Was Employed at Eureka Technology Partners from April 2010 to September 2010 as a Support Technician.  less

    pfsense cisco-ios cisco-routers network-administration network-planning network-security windows-administration 00 more less
    • $6.67 HOURLY RATE
    • 5.0
    • 47 HOURS
    • SRI LANKA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 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
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