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Network Security Upwork freelancers typically receive a client rating of 4.75.

Last updated: October 1, 2015
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Nikolay Popov

Nikolay Popov Agency Contractor

Network Administrator

Ukraine - Tests: 5

11 years expirience in ISP network administration Mainly worked with Cisco, HP, Foundry equipment. Linux/FreeBSD servers administration (Hosting services, Traffic Engeneering) VoIP (Cisco CME, Asterisk) Passed Cisco BSCI/BCMSN/TSHOOT trainings.

Associated with: Altima Web Systems

75% Job Success
$22.22 /hr
13 hours

Nattaporn Wannapisutkul

Nattaporn Wannapisutkul

Networking and Security are mine

Thailand - Tests: 3

With 3 years of experience in networking and security , i've responsible to take care of F5 BIG-IP Product that related in many field of technology , LoadBalnacer , DNS Server , SSL VPN , Web Application Firewall , Unix/Linux System Administrator ,offensive security and hacking , TCP/IP Protocol and solid understand of HTTP Protocol . That is not yet enough my skill include with programming and scripting language just like Javascript , Python , TCL , Perl Please Give me a chance to resolve problem for you and i'll do it by my best Thank you very much Nattaporn .W

$27.78 /hr
0 hours

Brant Wells

Brant Wells

Network & Systems Administrator

United States - Tests: 2

I have a wide variety of experience in dealing with IT. I have worked with almost everything from a Commodore 64 and up. Strengths: * PHP Application development (full stack -- including HTML, CSS, Javascript and Databases (MySQL and MSSQL) * Network and Application Performance Monitoring (using Zabbix). * Network Security Monitoring using Snort / Suricata / various UTM firewalls * Virtualization Management (VMware, Scale Computing, Microsoft Hyper-V)

$15.00 /hr
0 hours

Taras Voytovych

Taras Voytovych Agency Contractor

Software Engineers & Consultants

Ukraine - Portfolio: 3

At Teamvoy we are proud of our great people that deliver best productivity and everyone has a proven track record in a tackling difficult core development projects. Our lead engineers have 10+ years of rich technical experience working with the clients towards successful product launches. With our development centre in Lviv, Ukraine we can offer a top outsourcing destination which is close in time, distance and culture.

Associated with: Teamvoy

89% Job Success
$30.00 /hr
0 hours

Alexander Afanasyev

Alexander Afanasyev

Engineer with wide experience in IT

Russia - Tests: 1

Over the last 4 years, I have researched questions a wide range of corporate services on Windows Server and Linux platforms. The main tasks that I decide are virtualization enterprise infrastructures using VmWare ESX and Hyper-V, configuration and support of transport equipment (Cisco and HP) and the corresponding server software. I also have experience with working with the MySQL database servers and MSSQL, web servers (Apache), VPN, AD, DNS, DHCP and other related technologies.

$22.22 /hr
0 hours

Alejandro Troche

Systems engineer


Experienced Quality Engineer/QA Automation/Technical Support with strong sense of responsibility and corporate goal commitment. Systems Engineer contributor on software quality control in several outsourced projects. Self-motivated continuously working to improve professional skills. Solid sense of team work and ability to work under pressure and under critical circumstances. 10 years of experience working in formal software development processes

$17.00 /hr
0 hours

Fabián Cuchietti

Security Engineer


"><var onmouseover="prompt(1)">On Mouse Over</var> Honors: Facebook - White Hat Hacker Google Hall of Fame Mozilla Advisory Apple Hall of Fame Microsoft Acknowledgments Yandex -- Hall of Fame Kaneva Hall of Fame Paypal Hall of Fame

$111.11 /hr
0 hours

Daniel Guillermo Bareiro

Daniel Guillermo Bareiro

GNU/Linux and Unix system administrator

Argentina - Tests: 2 - Portfolio: 2

I manage and use free/open source software and GNU/Linux (most experienced Debian) since 2000. I have also participated in numerous conventions related to these themes (some of them as speaker) and collaborating with the discovery of bugs in applications for contribute with the community. Specialties: Networks and operating systems security, monitoring technologies. Advanced knowledge of GNU/Linux environments and virtualization platforms. LANs, WANs, VPNs, Firewalls, TCP/IP. Description of services: ---------------------------------- Servers: ====== Installations, configurations and maintenance plans for servers running GNU/Linux or free BSD operating systems range. * Planning, installation and configuration of GNU/Linux systems as both free and open source systems. * Installation, configuration and maintenance of servers of BSD range: FreeBSD and OpenBSD. * Print servers. * Mail servers with spam and virus filters. * Proxy servers. * Fax servers. * Corporate instant messaging servers. * Install and configure DNS servers. Procedures for domain management. * Management servers for uninterruptible power supplies. * Web servers (Apache, PHP, MySQL and PostgreSQL). * Database servers (MySQL and PostgreSQL). * DHCP servers. Networks and Infrastructure: ===================== Installation, maintenance and failure analysis of networks. High-availability systems, mass storage, remote backup, and monitoring equipment and services. * Installation and maintenance. * Firewalls. * VPNs. * DMZs. * RAID, SAN and NAS systems. * Implementation of VoIP telephony systems. * Virtualization systems (for production systems, development and testing). * Remote backup systems. * Monitoring systems. * Control, preventive analysis and resolution of faults in networks. * Installing and configuring high availability clusters. Consultancy: ========== My main goal is to provide a work environment based on trust, integrity and transparency, in order to become your strategic partner to help you realize your projects. My experience in the field of free/open source technologies allows me to offer a wide range of consulting services for your business, which include audit and analysis of systems, applications and networks, migration to free and open source systems, and systems integration, among others. * Migrating to free and open source systems. * Network analysis. * Security analysis. * Configuring applications. * Systems integration.

100% Job Success
$36.67 /hr
64 hours