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Network Administration Upwork freelancers typically receive a client rating of 4.77.

Last updated: October 1, 2015
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Nikola Nikolaev

Nikola Nikolaev

BI Analyst, Linux Expert


I'm a member of a small team. Most of the companies, especially those that do not have IT as a core business, do not utilize the full potential of its IT staff. Our mission is to help business, by preventing it spend too much money on internal IT services. We believe that the expertise and strong motivation are the keys to successful implementation of any technology at any scale. That is why we built a team of self-driven, self motivated experts, with outstanding professional track. Main activities of the team are in the field of GNU/Linux, networking, system integration, software development and implementation in corporate organisations, business intelligence and business process management, financial management and accounting.

89% Job Success
$25.00 /hr
90 hours

Oleg Burca

Oleg Burca

System, Network and Hosting administrator. Wordpress Specialist.

Moldova - Tests: 5 - Portfolio: 2

Hi, I am Linux and Windows administrator, with more than 8 years experience. Currently I'm working as DevOps specialist and SysAdmin for a development company. We create websites, online shops, APIs, applications and much more. I manage about 50 virtual and dedicated servers hosted on AWS, in our DataCenter and all around the world, runing on Windows Server 2008/2012 and Linux Ubuntu/Debian/CentOS. Most of them are Web Servers, but there are also DataBase servers, Mail, FTP and Application servers. Previously worked as engineer in a hosting company and was responsable for installing new services, configuring hosting servers, backup configuration, monitoring and clients support. Managed about 70 servers. I have good network administration skills and a lot of experience with WordPress. Worked a lot wit different panel for hosting, billing, datacenter administration, virtualization, VoIP and other. Latest year, most of projects managed by were hosted on AWS (Amazon Web Services). I am familiar with technologies, the abbreviations of names of those could scare many people: RDS, EC2, Reserved Instances, ELB, SES, SNS, AMI, IAM, S3, VPC, Elasticache, Route53, CloudWatch and others. I can help you plan, configure, scale, monitor, reduce costs of your AWS services. So, what can I do for you?! * First of all I can setup for you a Web Server. IIS on Windows, or Apache/Nginx on Linux. It can be also a mixed configuration with Nginx as frontend and apache for backend. It can be proxy, caching or load balancing configuration. Configure SSL certificates. * I can setup a mail server based on Postfix/Dovecot with antispam and antivirus functionality, with SSL/STARTTLS security. You will be able to use a webmail or dedicated client. * I can setup a File/FTP/WebDav server. * I can setup a MySQL server with PHPMyAdmin. * I can setup a backup solution for your server(s). * I can setup a DNS Server and solve all messing with domains and records for different purposes. * I can setup a virtualization server. * I can setup VoIP server (based on Asterisk/FreePBX). Configure trunks, extensions, conferencies and caller groups. * I can setup a Firewall or/and Gateway server, routers and switches. * I can setup or improve security for your server(s). * I can help you design scalable and reduntant cluster for web, database or application. * I can configure hosting services on AWS, estimate and optimize costs (Most experienced with EC2, RDS, ELB, Route53, SES, SNS). * I can setup Windows Exchange server. * I can setup Windows SharePoint server. * I can configure any business services offered by Google, Microsoft, Yandex or other. * I can migrate your site(s) to another hosting account or server. * I can improve your WordPress website performance and secure it. * I can assist or train you on all stuff about.

$27.78 /hr
0 hours

Anthony B.

Anthony B.

Technical Support

Philippines - Tests: 5 - Portfolio: 2

Its been 12 years, and yet active as technical resource and primary point of contact for server and network administration. I have successfully implemented and migrated Databases (postgres, mysql, MS Sql 2005 & 2008), Setup windows Server (2000NT, 2003, 2008, 2012), and Unix/Linux as System Administrator. And as network administrator constructed structured cabling, deployed and manages switches (L2), routers from small to corporate offices, firewall like SonicWall 5060 & NSA 5000 series, and Cisco ASA 5510/5505. I am also knowledgeable in developing Web design using Dreamweaver, Html, Php and MySql.

$17.78 /hr
16 hours

Scott Cavanaugh

Scott Cavanaugh

System administrator

United States - Tests: 4 - Portfolio: 1

I have been a systems and network administrator for roughly 20 years. I own a computer consulting company that has been in business for the past 13 years. I would consider myself a one stop shop because of the broad range of work related to computers I perform. Qualification Highlights Information Technology Project Management Operations Management Technical Analysis Network Engineering Systems Integration Migrations/Upgrades IT Strategy Development Multiple Programming Languages Custom AutoCAD Programming LISP Programming/Crystal Reports Exchange Server Active Directory Sharepoint Server DNS Firewalls Experience in most Autodesk applications SQL Server DHCP Routers/Switches

$25.00 /hr
17 hours

Jeffry S.

Jeffry S.

Systems Engineer

Dominican Republic - Tests: 16 - Portfolio: 1

My LinkedIn Profile Server Manager in Windows 2000, 2003 and 2008 Server: Domain Admin, Active Directory, domains, control, policies, IIS, etc.. Lotus Notes Domino Administrator Admin Operating Systems Windows XP, Vista, 7. Support for Mac OS Tiger, Leopard, Snow Leopard, Apple. Office 2000, 2003, 2007, 2010 for Windows. Office 2004, 2008 for Mac Telecommunications: PBX configuration, AVAYA Central Manager, Fleet Management, Balckberry, iPhone. Configure all printer models, repair, etc.. Mac Support. Install, configure and use VMWare ESXi, Vsphere and VMWare Workstation.

75% Job Success
$25.56 /hr
0 hours

Alexander S.

Alexander S.

Windows, Linux, virtualization engineer

Russia - Tests: 4 - Portfolio: 10

I specialize in servers administration (Microsoft, Linux) and virtualization technologies (Hyper-V, VMWare,Parallels), with clouds (Office 365, AWS, Azure) I can offer you not only the technical skills (in-depth knowledge of Windows and Linux architectures, local area networks), but also ideas that will contribute to raising the quality of your internal IT-structure. I believe that I can be helpful for your project. • Overall 12 years of work experience in IT. • Experience in building, upgrading and supporting virtual infrastructure based on VMware vSphere (ESXi, vCenter, VCOPS, etc.), Microsoft Hyper-V, VMware View. • Strong knowledge of the principles and technologies of providing High Availability and Disaster Recovery virtual infrastructure such as VMware HA, Fault Tolerance, (S)vMotion, Site Recovery Manager. • Rich experience in P2V (Physical to Virtual) and V2V (Virtual to Virtual) migrations of production customer’s services based on Linux and Windows using VMware vCenter Converter. • Experience in building physical server infrastructure based on HP and IBM server equipment (blade, rack-mount, storage). • Knowledge of the principles SAN and Ethernet networks. • Experience in auditing, troubleshooting and upgrading customer’s server infrastructure. • Working experience with technical documentation (writing and using). Last 8 years I worked in Oil company and Cloud provider company as one of the key specialists on the Teamlead and Senior System Engineer position. My skills can be divided to three main specializations: First of all, my strongest point is enterprise-level virtualization technologies VMware/Microsoft/Parallels: - VMware vSphere 4.0-5.5 - VMware (Horizon) View 4.6/5.0/5.2/6.0 - VMware vCloud Suite - MS Hyper-V 2008/2012 - Parallels Virtuozzo Second area it's Windows/Linux-based services administration: - Microsoft OS and Services: Windows 2003-2012(R2), Active Directory, DNS, DHCP, MS SQL, MS Exchange, Office 365, MS System Center series, Sharepoint - Enterprise infrastructure systems - Symantec Netbackup, HP Insight Control, Parallels Automation - Service Desk systems OTRS, Kayako, MS Service manager, HP Service Desk - Unix-like OS and Services: CentOS, RHEL, Zabbix, DHCP, DNS, iptables, Apache, Nginx, PHP, MySQL, FTP, Samba The third area is enterprise-level server equipment HP/IBM: - HP Proliant, Blade system, SAN P-series - IBM System X - APC equipment

70% Job Success
$20.00 /hr
2 hours

Muhammad Akmal

Muhammad Akmal Agency Contractor

Cisco Certified Engineer CCNA&CCNP, System admin and Virtualization

Pakistan - Tests: 7

I am a Cisco Certified Network and Security Professional with more than 15 years experience in Managed Network and Security Services. I have expertise in routing, switching and Network Security across all industry leading vendors. My passion to deliver quality solutions has taken me to full-time freelancing, with a loyal clientele base spanning the globe. I am available around the clock and ready to provide expert assistance as and when my clients call and in their preferred time-zone. --- Cisco--- Cisco 1700 Cisco 2500 Cisco 2600 Cisco 3800 Cisco 7200 Cisco 800 Cisco 1800 Cisco 1900 Cisco 2800 Cisco 2900 Cisco 3900 Cisco RV Seriese WLC 5500 WLC 4400 WLC 2500 cisco aironet 1000 cisco aironet 1100 cisco aironet 1200 cisco aironet 1300 cisco aironet 1600 cisco aironet 2600 cisco aironet 3600 Cisco ASA 5500 Series Cisco AS 5300 Series Cisco AS 5400 Series Cisco PIX 500 Cisco Switch Catalyst 2960 Cisco Switch Catalyst 3560 Cisco Switch Catalyst 3750 Cisco Switch Catalyst 3850 Cisco Switch Catalyst 4500 Cisco Switch Catalyst 4900 Cisco Switch Catalyst 6500 Cisco 4900 4900M Series Cisco Nexus 5000 Series Cisco Nexus 7000 Series cisco Small Business 100 cisco Small Business 200 cisco Small Business 300 cisco Small Business 500 --- Juniper --- Juniper J Series ->Juniper SRX Series SRX100 SRX110 SRX210 SRX220 SRX240 SRX550 SRX650 SRX1400 SRX3400 SRX3600 SRX5400 SRX5600 SRX5800 ->SSG Series SSG5 SSG20 SSG140 SSG320M SSG350M SSG520M SSG550M --- HP --- HP 6600 HP 5820 HP 5800 HP 5500 HP 5100 HP 5120 HP 3800 HP 3600 HP 3500 HP 3100 HP 2620 HP 2530 HP 830 HP 1910 HP 1810 HP 1410 HP 1405 --- Sonicwall --- TZ 215 TZ 210 TZ 205 TZ 200 TZ 170 TZ 180 TZ 105 --- NetGear --- AC1900-Nighthawk Smart WiFi Router AC1750-Smart WiFi Router AC1600-Smart WiFi Router AC1450-Smart WiFi Router AC1200-Smart WiFi Router AC1200-WiFi Router N900-CENTRIA WiFi Storage Router N900-WiFi Router N750-WiFi Router N600-WiFi Router N300-Trek Travel Router and Range Extender N300-WiFi Router N450-WiFi Router N300-WiFi Router N150-WiFi Router --- Routers & Firewalls -- Vyatta Pfsense MikroTik D-Link Routers and Switches CehckPoint Cybercoam samsung ubigate routers Riverbed --- WatchGuard --- XTM 2 XTM 3 XTM 5 XTM 8 Firebox X1250e Firebox X750e Firebox X550e Firebox X55e/X55e-W Firebox Edge X20e/X20e-W Firebox Edge X10e/X10e-W Firebox X5500e Firebox X6500e Firebox X8500e --- fortigate --- Fortigate 30B Fortigate 30D Fortigate 50A Fortigate 50b Fortigate 60c Fortigate 60D Fortigate 100c Fortigate 100D Fortigate 150D Fortigate 300A Fortigate 300B Fortigate 300C Fortigate 300D Fortigate 1000A Fortigate 1000C Fortigate 1000D --- Dell --- Dell Smart Lan Dell 3500 Dell 7000 Dell N200 Dell 6200 Dell 5500 Dell S-Series Dell Z-Series Dell N400 Dell 8100 --- Zyxel--- Zywall USG Series Zywall P Series I also have good understanding and work experience of -Microsoft family of servers and clients operating systems -Cloud Service Providers • Aamazon Web Services • Azure • Rackspace • Linode -Backpup Products • Symantic Backup Exec -Open source VPN solutions • openVPN • openSWAN • strongSWAN • Logmein Hamahi • -Virtualization Solutions • Hyper-V • Vmware • Xen -RRM Tools • Kaseya • Labtech • AutoTask • Connectwise • ManageEngine • Catci • OpenNMS • Solarwinds • Nagios • WhatsUP Gold • PRTG • MRTG • Microsoft Visio Linux Distros • Redhat • Debian • Ubuntu • Centos • Fedora • clearOS • FreeBSD • MacOS

Associated with: Aliado Inc Agency, Cloud Support Agency

79% Job Success
$33.33 /hr
1,356 hours

Nawab Asghar

Nawab Asghar Agency Contractor

MD / Founder

Pakistan - Portfolio: 7

DELIVERED SERVICES WORTH $10,000/- PLUS ! Over a decade of professional services extended to international marketplace; in-depth experience of IT Solutions. Sound expertise on Core IP Networks, TDM, VoIP Solutions, Software Development, Database Development & Implementation, ERP implementations and much more. Skills: 1. Cisco / Juniper 2. Linux / Unix 3. Microsoft Environment 4. VoIP Solutions 5. Web Development (HTML, Java Scripting, PHP, WordPress) 6. Databases (Oracle, SQL) 7. VPN 8. Mikrotik (RouterBoards)

Associated with: dgtel Consulting (Pvt.) LTD.

78% Job Success
$30.00 /hr
471 hours

Sonal Naeem

Sonal Naeem Agency Contractor

IT Professional

Pakistan - Tests: 2 - Portfolio: 1

Over 9 years of experience in IT support, networks and system administration. Currently providing remote and onsite support to clients in North America, UK, Sydney, Dubai, Canada and Pakistan. Hands on experience on the following tool and technologies Windows Server 2003-2012 - DNS, DHCP, AD, NAP, ADMT, FSMO, SSO, GPO, SMTP, IIS, WDS, WSUS, TS, Fax, File, Print, Migration Exchange Server 2003-2013 - HA, DAG, DAC, Defragmentation, Migration SharePoint Server 2007-2013 - Document site System Center Essentials 2012: SCCM, SCOM, SCVMM, SCDPM Lync 2010-2013 Windows Azure - AD Office 365 Forefront TMG and UAG Office 2003/2007/2010/2013 Hyper-V Citrix XenApp, Citrix XenDesktop, Citrix VDI-in-a-Box, Citrix XenServer VMWare ESX/Vsphere, Vcenter

Associated with: Smart Tech

88% Job Success
$22.00 /hr
10,537 hours

Ishan Ariyaratne

Ishan Ariyaratne

Network Engineer

Sri Lanka - Tests: 3

Work Experience: (From April 2010 to Present) Worked at Inbay Pvt. Ltd. [] 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.

100% Job Success
$11.11 /hr
1,788 hours