Network Administrators & Consultants

Showing 6,157 freelancers

Network Administrators & Consultants

Showing 6,157 freelancers

  • Perl hacker and Voip Expert

    I have more than 6 years working experience of voip industry. i am proficient in Asterisk, Freeswitch, Kamailio,Fusionpbx, A2Billing, Freepbx,Freeside and Linux Administrator. And i have planned and built dozen multi-tenant carrier pbx. i have been always supporting … more

    I have more than 6 years working experience of voip industry. i am proficient in Asterisk, Freeswitch, Kamailio,Fusionpbx, A2Billing, Freepbx,Freeside and Linux Administrator. And i have planned and built dozen multi-tenant carrier pbx. i have been always supporting two muti-tenant carrier pbx systems based thirdlane and FusionPBX which both have more than 500 concurrent calls and 3000 registrations extensions. I am able to coding with C/C++, Perl, PHP, shell, sql and other programming language. I am steady, honest and hard-working. I am fond of innovation and pursuiting new techonologies. click here to know me more: https://click.2-call.me/apa1  less

    asterisk a2billing freeswitch perl linux-system-administration c++ 00 more less
    • $27.78 HOURLY RATE
    • 4.7
    • 2192 HOURS
    • CHINA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 TESTS
  • Windows Systems Engineer | Exchange | SharePoint | AD

    Systems engineer with 8 years of experience managing server infrastructures and data-center operations across Microsoft platforms. Skills: - MS Windows Server 2003 /…/ 2012R2 – Active Directory, ISA, IIS, WSUS - MS Exchange 2007/2010/2013 - SharePoint 2007/2010/2013, SharePoint Designer 2007/2010 … more

    Systems engineer with 8 years of experience managing server infrastructures and data-center operations across Microsoft platforms. Skills: - MS Windows Server 2003 /…/ 2012R2 – Active Directory, ISA, IIS, WSUS - MS Exchange 2007/2010/2013 - SharePoint 2007/2010/2013, SharePoint Designer 2007/2010, InfoPath - Office 365 - PowerShell, VBSscript - Symantec Backup Exec 2010 - McAfee DLP, Trend Micro OfficeScan, Trend Micro Mobile Security, Symantec Endpoint Protection - IBM Blade Center, Flex Systems, X series - Virtualization: Hyper-V; Vmware (ESXi, vSphere)  less

    windows-administration microsoft-exchange-server microsoft-sharepoint-administration sharepoint-designer nagios microsoft-small-business-server-administration microsoft-hyper-v ms-office-365 microsoft-windows-powershell microsoft-server 00 more less
    • $18.89 HOURLY RATE
    • 4.9
    • 57 HOURS
    • POLAND
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 2 TESTS
  • CCIE 42930,2xCCNP,Juniper Specialist

    Hello, Senior Network and Security engineer with more than 10 certifications from different vendors including a CCIE. As a Cisco TAC engineer I fixed over 2000 different issues on multiple platforms. Let me show you I am your network engineer … more

    Hello, Senior Network and Security engineer with more than 10 certifications from different vendors including a CCIE. As a Cisco TAC engineer I fixed over 2000 different issues on multiple platforms. Let me show you I am your network engineer. Certifications List: CompTIA Security+ CCNA JNCIA CCNA Sec CCNP Security CCNP Routing&Switching JNCIS-SEC CCIE Routing&Switching 42930 Languages: Spanish, English  less

    cisco-asa vpn cisco-routers juniper-routers firewalls cisco-ios ipsec website-analytics 00 more less
    • $88.89 HOURLY RATE
    • 5.0
    • 103 HOURS
    • COSTA RICA
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 2 TESTS
  • Linux,Windows,System Admin, cPanel/WHM,Plesk Expert, Nginx,Apache,AWS

    Working as a System Administrator for webhosting clients and undertaking system administration work in Linux and Windows servers. Experience in Linux / Windows server administration. Expert in LAMP Administration DNS management (Registrar end and Hosting end), Mail Services (Postfix, Qmail, Exim … more

    Working as a System Administrator for webhosting clients and undertaking system administration work in Linux and Windows servers. Experience in Linux / Windows server administration. Expert in LAMP Administration DNS management (Registrar end and Hosting end), Mail Services (Postfix, Qmail, Exim, Mail enable), Advanced knowledge and experience in handling Plesk and cPanel . Experience in server migration Virtualization ( Parallels Virtuozzo/openVZ) Expert in Perl and Bash scripting.  less

    apache-administration linux-system-administration windows-administration cpanel plesk iis nginx postfix wordpress amazon-web-services 00 more less
    • $7.00 HOURLY RATE
    • 5.0
    • 60 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 TESTS
  • Technical Consultant & Microsoft Certified Trainer(B.Sc. ,MCSE,MCITP)

    Over the last 14 years, I was involved in Microsoft Infrastructure Products, VMware and BlackBerry Enterprise Server, designing and implementing business critical solutions for medium to large enterprises. My core competencies are Active Directory, Exchange Server, System Center, Lync Server … more

    Over the last 14 years, I was involved in Microsoft Infrastructure Products, VMware and BlackBerry Enterprise Server, designing and implementing business critical solutions for medium to large enterprises. My core competencies are Active Directory, Exchange Server, System Center, Lync Server and ISA/TMG server, BES, Symantec, NetApp, EMC, and Infortrend EonStor . I'm also qualified as a Microsoft Certified Trainer (MCT) and fully authorized to deliver Microsoft Official Curriculum. I'm also ITIL v3 certified.  less

    microsoft-exchange-server 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 92 HOURS
    • AUSTRALIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
  • Network and Systems Administrator

    After several years running Network, Server and Technical Support Operations for a UK based software company I have now started my own company providing IT Support and Solutions in my local area, this is suplemented with freelance work. I have extensive experience with Windows (Server and Desktop), Citrix, Cisco, Sage, MSSQL and general network administration.

    windows-administration citrix-xenserver microsoft-hyper-v-server microsoft-exchange-server microsoft-active-directory microsoft-sql-server-administration cisco-asa cisco-ios network-administration 00 more less
    • $95.00 HOURLY RATE
    • 5.0
    • 11 HOURS
    • UNITED KINGDOM
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
  • Cisco Expert -VOIP-Linux

    Cisco ISP Engineer , with over two Years experience in an ISP company , i have a great experience in dealing with complex ISP networks and other networks . In addition to being CCNP Certified , i have an experience in implementing ,monitoring & Troubleshooting … more

    Cisco ISP Engineer , with over two Years experience in an ISP company , i have a great experience in dealing with complex ISP networks and other networks . In addition to being CCNP Certified , i have an experience in implementing ,monitoring & Troubleshooting various cisco networks. In addition to Cisco , I have an experience in squid cache servers and integrating it with Cisco equipment and Linux Voip servers such as Elastix & freepbx. Also i have an experience with Microsoft Active directory & DNS. I can and will deliver great results with short time and client satisfy.  less

    linux-system-administration network-administration cisco-routers cisco-asa elastix freepbx squid radius 00 more less
    • $35.00 HOURLY RATE
    • 5.0
    • 10 HOURS
    • PALESTINIAN TERRITORIES
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 3 TESTS
  • Network Engineer : Cisco : Juniper : Fortinet :

    Despite the fact I am in young age I have years of experience with computers, networking and system. I am very tenacious and autodiact technical person for Cisco and Juniper Enterprise Network. I love to dig deep into specific technical … more

    Despite the fact I am in young age I have years of experience with computers, networking and system. I am very tenacious and autodiact technical person for Cisco and Juniper Enterprise Network. I love to dig deep into specific technical challenges. 5+ years experience in Enterprise Netwrok. # Some Highlights # @ Defining architecture and design for Enterprise customers. @ Lead engineer on some of the big enterprise networking projects. @ Training Internal Employee and customer. @ Cisco Instructor for Nepal Telecom Training Center. Main focus on Cisco and Juniper internetworks at Campus and Enterprise customers http://np.linkedin.com/in/sudandhakal  less

    cisco-ios juniper-routers cisco-routers ipsec vpn ospf bgp linux-system-administration network-planning network-security jncia-junos junos firewalls cisco-asa mpls mac-os-app-development 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 15 HOURS
    • NEPAL
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 6 TESTS
  • IT System Architect / BigData / Virtualization / Deployment

    I'm expert to scale you business and reduce your costs.. part of my skills: * Big Data (hadoop, cassandra, mesos, spark) * IaaS administration (EC2, Rackspace, Openstack) * web applications profiling, load balancing, high availability (corosync, pacemaker, drbd, gfs, ocfs) * virtualization (kvm … more

    I'm expert to scale you business and reduce your costs.. part of my skills: * Big Data (hadoop, cassandra, mesos, spark) * IaaS administration (EC2, Rackspace, Openstack) * web applications profiling, load balancing, high availability (corosync, pacemaker, drbd, gfs, ocfs) * virtualization (kvm, xen, vmware, virtualbox) * deployment systems like puppet, chef, fabric * web servers (apache, varnish, NGINX) * mail servers (postfix, exim) * database servers (postgres, mysql, db2) * dns (bind, powerdns) * ldap (openid for all services) * tomcat, jboss, jetty * jabber (ejabberd, openfire) * ftp (pureftp, proftpd) * monitoring (nagios, munin, graphite, cacti) * networking (routers, firewalls, switches) * development services (subversion, jira, otrs, archiva, hudson and others)  less

    linux-system-administration puppet-administration nginx postgresql varnish-cache dns postfix ldap mysql unix-system-administration apache-tomcat amazon-web-services amazon-ec2 haproxy python virtualization 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 1886 HOURS
    • POLAND
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 0 TESTS
  • AWS | EC2 | RDS | CloudFront | S3 | Chef | DevOP

    Update: Recently, I've been focusing on delivering large scaling infrastructure using AWS and Chef. Also, I've really focused on delivering CI to developers to help really bring their products to market quickly and efficiently. Since training with AWS … more

    Update: Recently, I've been focusing on delivering large scaling infrastructure using AWS and Chef. Also, I've really focused on delivering CI to developers to help really bring their products to market quickly and efficiently. Since training with AWS in 2011 this has been my passion. I've built backend infrastructure for mobile applications. I've built scalable e-commerce sites using magento, wordpress etc. Whether its augmenting current windows infrastructure, migrating servers to the cloud with VPN configurations. Or building a highly scalable multi-region infrastructure, I'm your guy. Please take a look at my portfolio, I've written several blog posts about building magento infrastructure, plesk installs, docker, among others.  less

    amazon-web-services amazon-ec2 amazon-s3 amazon-rds sw-configuration-management plesk ubuntu linux-system-administration devops 00 more less
    • $72.22 HOURLY RATE
    • 5.0
    • 132 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 1 TEST
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