Network administrator Freelancers

Showing 1,210 freelancers

Network administrator Freelancers

Showing 1,210 freelancers

  • Mr. Evangelos Nikolas Evangelou

    Over the past 15 years I have been involved in systems and network engineering across heterogeneous environments. During the last 7 years I have worked in the design and implementation of Virtualization solutions with VMware and small to medium size … more

    Over the past 15 years I have been involved in systems and network engineering across heterogeneous environments. During the last 7 years I have worked in the design and implementation of Virtualization solutions with VMware and small to medium size Datacenters. For the last 2 years I worked on several Cloud Migration, SaaS Deployment projects and Architecting/Managing Amazon SaaS Environments. Some recent responsibilities/projects include: * Server Operating Systems: Amazon Linux, Windows Servers * Monitoring/Trending/Notification with CloudWatch, SNS, Nagios, Munin, DotCom-Monitor * Design/Implementation of SaaS Environment in multiple Amazon VPCs * Amazon Console Security using IAM / CLI and API Tools * Database Services utilizing Oracle, MSSQL and MySQL RDS * Reverse-Proxying/Load-Balancing using Nginx, HAProxy and Amazon ELB * Storage/Content Delivery utilizing CloudFront with S3 and Akamai * Host Intrusion Detection utilizing OSSEC (AlienVault) * Vulnerability Assessment utilizing QualysGuard (internally to VPC and externally to websites) * Application Servers: JBoss, Oracle Application Server, WebLogic * Email Servers: Sendmail, Procmail, Postfix * VPNs: Cisco VPN, Cisco Anyconnect, OpenVPN, OpenVPN Access Server * Automation of Amazon Deployments with Chef and Cloudformation * Server Migrations to the Cloud using Double-Take, Amazon VMDK Import, Rsync  less

    linux-system-administration network-administration 00 more less
    • $31.11 HOURLY RATE
    • 5.0
    • 5249 HOURS
    • CYPRUS
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 TESTS
  • System Administrator

    Working as Website/Network/System Administrator and Computer troubleshooter Over 5 Years.Now work as fulltime freelancer(up to 84 hours per week ) Have some experience with LAMP,NGINX,Windows Server 2003/2008,Exchange Server 2003,SQL Server 2003/2008. Speak four language.Chinese(native),intermediate level English,intermediate level Japanese and elementary Level German.

    network-administration 00 more less
    • $3.00 HOURLY RATE
    • 4.8
    • 318 HOURS
    • CHINA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 TESTS
  • Linux administrator, Windows admin, C# DEV, DBA, Network security

    5 years of network administration in a highly complex university environment, experience with diverse networking equipment (mostly HP, 3COM, CISCO). I also have extensive experience with Sonicwall, Smoothwall, PKI infrastructure design and eToken integration. Network design for small and medium … more

    5 years of network administration in a highly complex university environment, experience with diverse networking equipment (mostly HP, 3COM, CISCO). I also have extensive experience with Sonicwall, Smoothwall, PKI infrastructure design and eToken integration. Network design for small and medium networks. Server administration including Windows (AD, MsSQL, DotNetNuke ) and Linux (Ubuntu, CentOS) based systems. As well as extensive database administration and development experience. C# development experience, creating WPF desktop applications, MVC based web applications using EF.  less

    windows-administration linux-system-administration network-security network-administration vmware-esx sql 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 674 HOURS
    • MACEDONIA
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 7 TESTS
  • { C#;VB.Net,MVC 4 ASP.NET,SQL Server 2000,2005,2008; TFS }

    { C#;VB.Net,MVC 4 ASP.NET,SQL Server 2000,2005,2008; TFS } MULTITASK DECISION MAKING : WORK WITHOUT SUPERVISION : DEDICATED : DESKTOP APPLICATION : NETWORKING : WITH MORE THAN 1 YEAR EXPERIENCE IN INDUSTRY

    database-programming network-administration 00 more less
    • $2.22 HOURLY RATE
    • 3.9
    • 18 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 2 TESTS
  • IT Specialist

    Currently a graduate student, I am seeking work in the data manipulation, entering, and processing. I have experience as a network engineer for companies of various sizes, and am currently working with a local university processing Research Data.

    customer-service web-design html php network-administration 00 more less
    • $8.89 HOURLY RATE
    • 5.0
    • 2 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 8 TESTS
  • Top Notch IT Consultant and Virtual Assistant

    My IT experience includes being a Network Engineer and Network Administrator for 4+ years, handling a range of devices: Cisco Routers and Cisco Switches, Juniper Firewalls, Checkpoint Firewalls, Linux-based Firewalls. I also have network troubleshooting skills for Linux and Windows … more

    My IT experience includes being a Network Engineer and Network Administrator for 4+ years, handling a range of devices: Cisco Routers and Cisco Switches, Juniper Firewalls, Checkpoint Firewalls, Linux-based Firewalls. I also have network troubleshooting skills for Linux and Windows servers as well. I am very knowledgeable in TCP/IP and IT Networking. In the last 7 years, I have been engaged in several virtual assistant tasks in my line of work. This includes administrative tasks such as making the minutes of our meetings and transcribing them, typing documentation reports, doing web research and data-entry, as well as data-mining related info from the Internet and putting it on a website, spreadsheet or a word document file. I have done advertisement postings in the web, e-mail and social media for marketing several of my businesses using catchy phrases and subject lines. I am a fast learner and very willing to be trained for new skills not included above as required for your task at hand. This all has been applied in my Information Technology work, my businesses and my career in sales and customer service.  less

    cisco-routers cisco-asa cisco-ios tcp-ip network-administration firewalls linux-system-administration network-security vpn wireless-network-implementation 00 more less
    • $6.67 HOURLY RATE
    • 5.0
    • 0 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 8 TESTS
  • Software QA Tester Technical Writer

    I am an IT professional having 10+ years of experience in following fields:- 1- EMR Management.(Deployment & Implementation). 2. Web Application & Desktop Applications Testing. 3. Data Center Management. 4. System Administration. (Windows Server 2003-2008 & RHEL) 5. Technical Documentation (User & Configuration … more

    I am an IT professional having 10+ years of experience in following fields:- 1- EMR Management.(Deployment & Implementation). 2. Web Application & Desktop Applications Testing. 3. Data Center Management. 4. System Administration. (Windows Server 2003-2008 & RHEL) 5. Technical Documentation (User & Configuration Manuals, Requirements Specification Documents, ER Diagrams. etc.) 6. Networks Administration & Network/System Documentation. 7. Virtual Assistance (MS Office Suite | Presentations | Internet Research | Scheduling & Data Entry). 8. Technical & Review Writing. 9. Software Firewalls(ISA) I can provide you with: - Hospital Management Information System. - Network & layout Designing. - Network Management & System Administration. - Technical & Customer Support. ( IP Scheme, Proxy, ISA 2006, WSUS, Desktop Management, ERP Deployment). - Functional/Black box Testing/Manual Testing. - Regression Testing/UI Testing. - Cross-Browser Testing & Exploratory Testing. - Test Case/Plan & Document Creation. - Bug Reporting & Tracking - Testing Metrics. - Network Layouts & Diagrams Hands on Experience in Following Tools:- - Mantis. - JIRA. - Spira Test. - MS Project. - MS Visio. - HMIS.(MS SQL & Oracle DB) - NPM. - MRTG. - MS PowerPoint/Excel/Word. - HP SystemWorks  less

    network-administration web-testing technical-documentation black-box-testing computer-maintenance usability-testing performance-testing user-acceptance-testing 00 more less
    • $6.67 HOURLY RATE
    • 5.0
    • 0 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 8 TESTS
  • MCITP, MCSA, CCNA, MCTS

    Experienced in maintaining Windows Server services and networking components, resolving basic network, server and desktop issues. • Server Administrator | OS 2003/ 2008/ 2012 | ADDS | Hyper-V | DNS | DHCP | Group Policy | Fault Tolerance | Failover Clustering | Backup & Recovery | • Network Engineer | Routing and switching | OSPF … more

    Experienced in maintaining Windows Server services and networking components, resolving basic network, server and desktop issues. • Server Administrator | OS 2003/ 2008/ 2012 | ADDS | Hyper-V | DNS | DHCP | Group Policy | Fault Tolerance | Failover Clustering | Backup & Recovery | • Network Engineer | Routing and switching | OSPF | EIGRP | RIP | VLANs | RSTP | VLSM | NAT | ACLs | Network design | Redundancy & Fault Tolerance |  less

    cisco-routers cisco-ios windows-administration computer-networking network-administration computer-repair computer-maintenance technical-support network-planning 00 more less
    • $8.89 HOURLY RATE
    • 5.0
    • 7 HOURS
    • CROATIA
    • LAST ACTIVE
    • 18 PORTFOLIO ITEMS
    • 9 TESTS
    GROUPS:
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