Network Administrators & Consultants

Showing 9,007 freelancers

Network Administrators & Consultants

Showing 9,007 freelancers

  • Experienced Technologist

    I am an Talented and Experienced Network Engineer, sales engineer, physical security engineer (Alarm Systems, Access Control, and Video Surveillance), and communication specialist with over 20 years in the design, installation, configuration, administration and troubleshooting of networks, security systems, video … more

    I am an Talented and Experienced Network Engineer, sales engineer, physical security engineer (Alarm Systems, Access Control, and Video Surveillance), and communication specialist with over 20 years in the design, installation, configuration, administration and troubleshooting of networks, security systems, video surveillance (IP Cameras, Analog and HD-SDI camera systems). My primary language is English and I speak and read binary natively. I do live and breathe IP networking, I do not claim to know everything there is to know about Networking; however, I enjoy the work I do and I do my best to be as efficient and as useful as I can while always putting the client's interest before my own financial gains. I can provide consulting services and remote network engineering skills utilizing LAN infrastructure - Routers/Switches/Firewall, VLANS, LACP, PAgP,802.1q, RSTP, OSPF, BGP, Trunking, etc. WAN infrastructure - Point to Point DS3 (T3) and DS1 (T1) utilizing ATM and SONET Technology; DSL and cable modem Internet Backup links, Site to Site/Site to Mult-isite and Client to Site VPNs. Internet and intranet DNS - Domain Registration, Domain setup on Microsoft / Bind DNS servers, and troubleshooting DNS Related issues. - Domain delegations utilizing glue records and also setting up caching nameservers. Wireless: Mikrotik, Ubiquiti, and Motorola Point-to-Point and Point-to-Multipoint design, installation and configuration. Wireless RF planning of indoor and outdoor wireless networks utilizing heat maps for wifi coverage. Technology: I have a great deal of experience in various ISP (Co-location, Data Center, Internet Service Providers) technologies that focuses on managed services utilizing Juniper and Cisco Firewalls, Cisco, HP and Foundry Layer 2 and Multilayer switches, Cisco and Juniper Routers, Cisco and Foundry Load Balancing utilizing Content Switching and ServerIron Technology, and IP address optimization. IPv6: I can provide IPv6 support and consulting services on the creation of business plans, business cases, migration, transition, new installations, and upgrades to your existing IPv4 network. Security Solutions: Honeywell, 2GIG, GE, ITI, Alarm.com, Total Connect, Interactive services, IP CCTV, IP Surveillance, IP Camera, Alarm System and CCTV System design (Pre and Post Sales Support). CVE-2014-0160 - OpenSSL Heartbleed patching.  less

    dns firewalls apache-administration cisco-routers tcp-ip electronics antenna-design vpn cisco-asa computer-networking wireless-network-implementation network-security ipsec network-administration nagios zabbix ingress-filtering bgp ospf network-planning wireless-security security penetration-testing linux-system-administration windows-administration 00 more less
    • $44.44 HOURLY RATE
    • 5.0
    • 430 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 8 PORTFOLIO ITEMS
    • 10 TESTS
  • iOS/Cocos2d/Cocos2d-x/Unity3d Developer

    Over the last 4 years, I have been working as a Lead Mobile Developer. My expertise lies in iOS, Android and Unity3d development. I have wide range of experience in native applications, Cocos2d and Unity3d Games. I also have great … more

    Over the last 4 years, I have been working as a Lead Mobile Developer. My expertise lies in iOS, Android and Unity3d development. I have wide range of experience in native applications, Cocos2d and Unity3d Games. I also have great skills in Cocos2d-x and Unity3d for cross platform release. Any sort of Ads integration or In-App Purchases (Charboost, PlayHaven, iAD, Vungle, AdMob, AirPush, MoPub, AppLovin etc.) for both iOS and Android is a piece of cake for me. I can assist in any kind of Mobile Development problem, from start of its development to the final upload. My core competency lies in the complete satisfaction of my clients. Here at oDesk, i am seeking opportunities to work with professional clients and to have long term business relationship.  less

    ios-development 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 588 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 3 TESTS
    GROUPS:
  • Linux System Engineer

    I have been working on deploying and managing Linux web servers using different technologies, Apache , Nginx, Varnish-cache, Php-fpm, Fcgi, Dso, SuPhp, Cpanel, Webmin, Virtualmin, Memcached, Apc, etc... and i have specialized at increasing website performance and making the best use … more

    I have been working on deploying and managing Linux web servers using different technologies, Apache , Nginx, Varnish-cache, Php-fpm, Fcgi, Dso, SuPhp, Cpanel, Webmin, Virtualmin, Memcached, Apc, etc... and i have specialized at increasing website performance and making the best use of machine resources. I also have experience in automating server recurring tasks and application deployment and configuration using bash and python. I always look forward to use my knowledge in managing Linux servers, learning new technologies, enhancing my current knowledge and skills and passing my knowledge to others.  less

    python wordpress linux-system-administration bash data-backup memcached performance-tuning cpanel apache-administration nginx 00 more less
    • $17.78 HOURLY RATE
    • 5.0
    • 330 HOURS
    • EGYPT
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 6 TESTS
  • Linux System Administrator / Technical Writer

    LINUX ADMINISTRATION: Whether your business needs a virtualization solution, remote administration, more secure and sophisticated software services, or simple, clean, and efficient publications or websites, I'll bet I can solve your problems quickly and on-budget. WRITING: Looking for great … more

    LINUX ADMINISTRATION: Whether your business needs a virtualization solution, remote administration, more secure and sophisticated software services, or simple, clean, and efficient publications or websites, I'll bet I can solve your problems quickly and on-budget. WRITING: Looking for great writing? Looking for someone with a strong tech background who is able to write clear, engaging text with the clarity and focus of a professional teacher? Do your company's software documentation and user guides need greater clarity? Is it time for a major update? I can help. Over the years I've written and edited enterprise software documentation, user guides, tutorials, and hundreds of articles. My careful attention to detail, experience and love for both writing and editing will ensure high quality output for written and desktop publishing projects. I'm familiar with Atlassian Confluence and other Wiki documentation systems. NOTE: As I use only open source software for my desktop publishing projects, my customers can both keep and easily reuse the original files.  less

    technical-writing article-writing business-writing atlassian-confluence technical-documentation users-guide-writing linux-system-administration tcp-ip ubuntu html print-layout-design 00 more less
    • $25.00 HOURLY RATE
    • 4.4
    • 147 HOURS
    • CANADA
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 10 TESTS
  • Software Architect

    Goal: Looking for a technical consultant job. PROFILE 14+ years of Storage/Server/Network/ Embedded software industry experience having spent much of my career in the information and storage emerging technology space. I worked as a senior architect in Trilogy … more

    Goal: Looking for a technical consultant job. PROFILE 14+ years of Storage/Server/Network/ Embedded software industry experience having spent much of my career in the information and storage emerging technology space. I worked as a senior architect in Trilogy Inc ,HP Lab and CMC R&D Lab. I have successfully delivered multiple functional solution on High performance computing, Distributed file system, Unified Storage Management, Data Center Fabric, Network Security, Geo Replication, Continuous Access, Host/Fabric/Array Virtualization, Storage Tier to large scale customers. As a member of SNIA,T11, Apache, OPEN WSMAN, Brocade/Cisco/HP/EMC technical forum I have active participation in some industry initiatives on Enterprise storage management and storage virtualization. I have participated in multiple open source activities to address the enterprise storage management and data protection challenges. I am experienced of working in all phases software development and posses excellent knowledge of software engineering. SOFTWARE SPECIALIZATION Expert programmer in JAVA/J2EE/C/C++. I was senior architect of market leading products like Network Authority, Storage Essential and Data Protector . DOMAIN SPECIALIZATION Enterprise Storage, Virtualization, Network Management, Cloud Computing, File system, Hadoop, High Performance Computing, Linux. INDUSTRIAL EXPOSURE Worked as Technical Consultant for Trilogy Inc for market leading Product Network Authority Worked as a technical architect for Hewlett Packard market leading SRM product storage essential. Developed the Discovery and Backup framework for Network Infrastructure Developed Management Framework for managing Brocade/CISCO/Qlogic/McData SAN switches. Designed and Developed product on distributed file system and high performance computing. Developed Application for RADAR DATA PROCESSING, Internet Banking and Image Processing. CERTIFICATION Brocade Certified Fabric Designer (BCFD-8Gb) Brocade Certified Fabric Professional( BCFP -8Gb) Sun Certified Java Programmer(SCJP)  less

    j2ee c c++ 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 5778 HOURS
    • INDIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 1 TEST
  • IT Architect - Network Specialization

    Education Technical Highschool Degree= Computer Programming Specializiation Associate Degree =Software Programming Bachelors Degree = Bch in Computer Science - Network Security Specialization Masters Degree(In progress)= Communication Systems (Internetworking) Professional Recognitions Cisco Certified Network Associate Cisco Certified Network Professional Cisco Certified Security … more

    Education Technical Highschool Degree= Computer Programming Specializiation Associate Degree =Software Programming Bachelors Degree = Bch in Computer Science - Network Security Specialization Masters Degree(In progress)= Communication Systems (Internetworking) Professional Recognitions Cisco Certified Network Associate Cisco Certified Network Professional Cisco Certified Security Professional Cisco Certified Internetwork Expert (Lab Pending) Cisco Certified Academy Instructor Public Recognitions Cisco NetPro (husycisco) https://supportforums.cisco.com/reputation.jspa?username=husycisco Experts-Exchange Qualified Expert (MrHusy) http://www.experts-exchange.com/M_3788926.html 8+ (Intense) years of experience I am already helping people out in above communities for free, you can feel safe that you wont have a poor delivery of tasks or projects.  less

    cisco-routers cisco-asa firewalls vpn network-planning mpls bgp juniper-routers 00 more less
    • $137.78 HOURLY RATE
    • 5.0
    • 186 HOURS
    • SWEDEN
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 4 TESTS
  • IT Professional - PHP-mySQL-ASP-ASP.NET-SQL-JQuery-JavaScript-CSS-AJAX

    A distinguished website development expert with 12+ years of experience in Web Programming, Designing and Project Management. Experience in website development from scratch on multiple programming languages, CMS (Content Management System) handling and Graphics Designing. Proficient working on WordPress, Drupal … more

    A distinguished website development expert with 12+ years of experience in Web Programming, Designing and Project Management. Experience in website development from scratch on multiple programming languages, CMS (Content Management System) handling and Graphics Designing. Proficient working on WordPress, Drupal and Joomla, from basic installation to advance plugins and theme creations. Server Side programming on PHP, ASP, ASP.NET, Yii framework; Client Side programming on JQuery, JavaScript; CSS handling; AJAX routines and databases management on mySQL, SQL Server, Oracle and MS Access.  less

    asp.net php asp mysql sql opencart openx web-content-management web-design web-scraping html javascript ajax jquery wordpress joomla drupal oscommerce oracle-database sqlite wp-ecommerce 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 1067 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 20 PORTFOLIO ITEMS
    • 2 TESTS
  • AWS,Cloud, VOS , Asterisk,VoIP,Linux,BulkMail

    Over the last 9 years I've been working in web hosting industry and have a hand on experience of Linux/Unix system and A+ expertise in all Linux troubleshooting. I've expertise of Amazone, RackSpace, VMWare ESXi(4,5 … more

    Over the last 9 years I've been working in web hosting industry and have a hand on experience of Linux/Unix system and A+ expertise in all Linux troubleshooting. I've expertise of Amazone, RackSpace, VMWare ESXi(4,5), XenServer, Load Balancer, WHM/Cpanel, Plesk, ISPcp, ISPConfig, DirectAdmin, VirtualMin, Apache, MySQL, Postfix, Dovecot, Exim, Squid, OpenVPN, OpenSSL, Hadoop, Hbase, Solr, Redis, FFmpeg, FFmpeg-php, SugarCRM, ViciDial, VtigerCRM, Shell Scripting, Perl Scripting, PHP, RoundCube, SquerrileMail, Enterprise level Hosting/Mail Servers like Zimbra for large scale Setup with full security features and System Backups. I also have VOIP expertise and following are my favorite Asterisk PBX, SS7 Signaling,IVR Systems, Dictation Systems.  less

    freebsd linux-system-administration bash perl apache-administration centos whm cpanel plesk mail-server-implementation asterisk amazon-web-services vmware-esx mysql postgresql load-balancing amazon-ec2 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 357 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 2 TESTS
  • AspDotNetStorefront/Aspdnsf + eCommerce + Database Expert.

    In my 4 years of experience I had worked on so many development tasks mainly in Aspdotnetstorefront(ASPDNSF) projects like Upgrading Aspdotnetstorefront from old version to the latest Aspdotnetstorefront(ASPDNSF); Building New functionality in Aspdotnetstorefront(ASPDNSF); Designing(Skinning in Aspdotnetstorefront … more

    In my 4 years of experience I had worked on so many development tasks mainly in Aspdotnetstorefront(ASPDNSF) projects like Upgrading Aspdotnetstorefront from old version to the latest Aspdotnetstorefront(ASPDNSF); Building New functionality in Aspdotnetstorefront(ASPDNSF); Designing(Skinning in Aspdotnetstorefront(ASPDNSF)), CRM SYSTEM: A custom built CRM system called Loyalty Reward Program, POS(Point Of Sale) SYSTEM:MARS POS; using these technologies/frameworks mainly: C#,.NET, Win-form Applications, ASP.NET, Aspdotnetstorefront(ASPDNSF), ASP.NET MVC, RESTfull Web Services, Amazon Email Services, Amazon Web Services, Amazon-EC2, Ms SQL Server(Any) in:-database,scripting, Queries,MySQL,Postgresql,PL/SQL Java-Scripting,jQuery+UI,YUI, Crystal Reports, Experienced with git, svn, version control. I am also good With UI-UX with: HTML5, CSS3, Bootstrap CSS. I've worked on huge projects like aspdnsf customization, a custom-built CRM system, working on my own POS system development. I am expert in software engineering and try too make my code more clear using OOPS concepts to scale-up the application over technology-stack and make code more understandable using commenting code and providing summary-text(This is necessary when you work on a complex project) I am a quick learner and can gain grip over new things easily over small amount of time.My main objective is to provide excellent service, with timely, accurate, and professional results.  less

    aspdotnetstorefront c# sql asp.net .net-framework microsoft-sql-server-development html5 html css stored-procedure-development amazon-web-services css3 jquery ajax xslt asp.net-mvc linq entity-framework database-design database-programming ado.net xml microsoft-visual-studio xml-web-services crm pos-terminal-development microsoft-access microsoft-entity-framework 00 more less
    • $19.78 HOURLY RATE
    • 4.3
    • 2136 HOURS
    • INDIA
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 10 TESTS
    GROUPS:
  • Senior system administrator and PHP - C - Perl developer

    Very skilled Unix system administrator, with lot of experience in Linux ( Centos, Redhat, Fedora, Ubuntu, Debian, Gentoo, Slackware ), Solaris, xBSD ( FreeBSD, OpenBSD), vpn ( openswan - ipsec, openvpn, l2tp, pptp ), clustering ( LInux Virtual Server, Linux HA, vrrp, Solaris Cluster ), cloud computing, load … more

    Very skilled Unix system administrator, with lot of experience in Linux ( Centos, Redhat, Fedora, Ubuntu, Debian, Gentoo, Slackware ), Solaris, xBSD ( FreeBSD, OpenBSD), vpn ( openswan - ipsec, openvpn, l2tp, pptp ), clustering ( LInux Virtual Server, Linux HA, vrrp, Solaris Cluster ), cloud computing, load balancing ( f5, haproxy ), VoIP ( asterisk ), databases ( MySQL, PostgreSQL), LDAP, web services ( Apache, Nginx, varnish ), security ( penetration testing, firewall policy design ), control panels ( CPanel, Plesk, Virtualmin, Ensim ), Virtualization ( VMWare Virtual infrastructure - VSphere, amazon EC2 ). As for Developing I am very experienced in C, PHP, Perl, javascript, ajax and many more to list.  less

    linux-system-administration mysql php asterisk audio-mixing audio-editing html css perl varnish-cache firewalls security network-security ipsec openvpn iptables penetration-testing postfix load-balancing pci-compliance cpanel zimbra-administration voip-administration 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 841 HOURS
    • GREECE
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 11 TESTS
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