Network Security Developers & Programmers

Showing 20 freelancers

Network Security Developers & Programmers

Showing 20 freelancers

  • Consultant

    Previous owner of an I.T. consulting firm (5 years), plenty of experience in project management, teams of 4 - 10. I also have 9 years of experience managing servers and networks. Graduated with technical degree in computer science and engineering (4 year degree). Very well versed in Windows and Unix networking.

    network-administration network-security 00 more less
    • $17.78 HOURLY RATE
    • 5.0
    • 2783 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 TESTS
  • Sr Linux / Amazon EC2 / Migrations / Nginx / Security / DevOps

    A self-motivated System and Network security administrator with more than 10 years in the management and analysis of Linux/Unix enterprise Servers (60- 70 servers). With deep and advance knowledge of highly scalable servers, Cloud Computing, High performance, Hardening Servers … more

    A self-motivated System and Network security administrator with more than 10 years in the management and analysis of Linux/Unix enterprise Servers (60- 70 servers). With deep and advance knowledge of highly scalable servers, Cloud Computing, High performance, Hardening Servers, Migrations, Ethical hacking, Development Operations - DevOps, Open Source services and Server optimization. Certifications such as: Certified Ethical Hacker - Red Hat Certified Engineer - Cisco CCNA. Expertise in: MIGRATIONS: AMAZON/Wordpress/Magento/LAMP/Cpanel migration plans and implementation, backup-restore and recovery plans. I have helped dozens of clients migrate their web sites and applications into the CLOUD. Design and build Web Servers with HIGH PERFORMANCE (LAMP, NGINX/python, Nginx/Varnish, Nginx/php-fpm, Jboss, Apache tomcat and Varnish) - Improve and Fix performance issues, service optimization, security issues and deployments. MALWARE removal and analysis: WordPress / Magento / Joomla Malware removal and remediation, Incident handling and Forensics analysis. BOOST and optimize websites with: NGINX, Varnish, REDIS, Amazon S3, Memcached, APC, apache tunning and mysql tunning, Amazon CloudFront and more. Amazon Cloud Computing (AWS) - AMAZON EC2, amazon CDN S3, amazon RDS, amazon ELB, Amazon AutoScaling, VPC, CloudFront, Route53, etc. Also Management of multiple Control panels like Rackspace Cloud Computing, SoftLayer, GoDaddy, HostGator, dreamhost and MediaTemple. Designing and deploying scalable & Highly available systems such as: Amazon Load Balancing (ELB), Hearbeat, HAProxy, mysql cluster, apache cluster... Network and web security such as: Vulnerability Assessments, Hardening servers, security audits, Penetration testing, Virus/Malware/Threats/Vulnerabilities countermeasures, web security, fail2ban, Tripwire-AIDE-OSSEC, mod_security, mod_evasive, Denial of Services (DDOS) countermeasures, Firewalls (iptables, CSF and apf), etc. VPS: Cpanel / WHM / Plesk / DirectAdmin / Webadmin - Migrations, management, hardening, configuration, maintenance and high level of Administration. Databases Administration such as: Mysql tweaking and tunning, MongoDB, load balancing and Mysql replication (Master & Slave) for High traffic. Database: Mysql tweaking and tunning, MongoDB, ElasticSearch, Apache Solr, Sphinx, lucene, MariaDB, Postgresql replication & Pgpool, Mysql load balancing and Mysql replication (Master & Slave) for High traffic. Continuous integration (CI) and Automated configurations with: Puppet, Capistrano, GIT and Fabric. Jenkins + github, Jenkins + nginx... Networking: TCP/IP high expertise, NAT, FIREWALLS, CISCO routing and switching and Packet analysis with tcpdump and wireshark. Storage solutions and Directory management: SAMBA, NFS, FTP and sftp. LVM and RAID*. SCRIPTING: Bash and python. Proficient with MAIL Servers: postfix, sendmail and Zimbra. Source control versioning: GIT and SVN. Deploying and maintaining Monitoring systems such as: nagios, ZAbbix, cacti and Jboss Operation Network (JON). Backups solutions: amanda, rsync, Amazon backups and rsnapshot. Research & development (R & D) for any open source service and technology.  less

    network-security amazon-ec2 nginx linux-system-administration penetration-testing apache-administration jboss ubuntu virtualization samba security bash mysql amazon-rds amazon-web-services nagios rackspace-cloudservers clustering iptables centos git apache-tomcat unix-system-administration varnish-cache django-framework 00 more less
    • $24.99 HOURLY RATE
    • 4.9
    • 4674 HOURS
    • MEXICO
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 4 TESTS
  • AWS Admin/Architect

    I have over 15 years of experience in technology. Anything from software development to servers, desktops or networks and everything in between. I have served in the United States Air Force and worked at government agencies as well as high … more

    I have over 15 years of experience in technology. Anything from software development to servers, desktops or networks and everything in between. I have served in the United States Air Force and worked at government agencies as well as high tech companies across the globe. If it is configuring routers or switches. Working in the Cloud with Amazon, Rackspace Etc. Linux, Windows or anything in between then I am your man.  less

    computer-networking wan amazon-ec2 network-administration network-planning network-security cisco-routers cisco-ios load-balancing security squid iptables memcached firewalls ubuntu amazon-web-services amazon-s3 virtualization microsoft-hyper-v vmware-esx vmware-administration ldap samba mac-os-app-development openvpn vpn linux-system-administration 00 more less
    • $44.44 HOURLY RATE
    • 4.9
    • 1640 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 8 TESTS
  • Internetworking Consultant with over 22 years of broad IT experience.

    to provide customers with reliable, trustworthy, cost effective services to efficiently operate their business.

    windows-administration security dns ftp smtp dhcp microsoft-exchange-server microsoft-hyper-v vmware-administration tcp-ip email-deliverability-consulting firewalls network-administration network-planning network-security citrix-xenserver 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 9061 HOURS
    • CANADA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 10 TESTS
    GROUPS:
  • Project Management, and Service Management,

    Demonstrable skills and experience in both Enterprise and SME (MSP Clients) Project and Programme Management, based on the principles and methodologies of industry standards such as PRINCE 2 and PMP. With further demonstrable experience of managing teams in excess of … more

    Demonstrable skills and experience in both Enterprise and SME (MSP Clients) Project and Programme Management, based on the principles and methodologies of industry standards such as PRINCE 2 and PMP. With further demonstrable experience of managing teams in excess of 30 members including local hire and remote resources, together with all aspects of annual performance appraisals, and contractor negotiation, with an excellent understanding of the latest ITIL methodologies for ITSM. This specific experience has been gained from over 10 years of managing distributed teams and environments across multiple time zones and cultural forums, through Application and Infrastructure Support and Project and Change Management to have a complete understanding of the both SDLC and ITSM and how to make them successfully coexist. I have developed and managed enterprise grad SLA’s, OLA’s, UC’s and KPI’s framework, for both internal IT staff and external supplier resources to meet with industry and global regulatory requirements. Responsible for ALL Sarbanes Oxley (SOX) reporting and owner of ALL SOX controls for UK. I have a professional, adaptable, and competent approach to both Resource and Stakeholder management. I am more than comfortable with working in an integrated IT environment or as a consultant. I have a strong mix of corporate enterprise, SME and entrepreneurial experience, and to expand on that, my experience has afforded me the ability to learn the complex matrix management structures and business models which predominantly gained within Global Financial Services Industries (Investment Banking and Global, Corporate and Specialty Insurance). Where conversely some of my most recent and earlier career experience was based in one of the most competitive customer service industries, and to achieve success in this, I had to be flexible to market conditions, so that I could maintain strategic focus so as to continually meet my financial targets. The combination of my career experience has provided me with the opportunities of working in USA, Belgium, France, Spain, Gibraltar, Abu Dhabi and secondments to Brazil, Mexico and APAC, for projects that I was either managing or transferring to local piers and latterly I had responsibilities for USA, Germany, Italy, Switzerland and Denmark. I am confident that I have a strong comprehension of global business environments and managing diverse IT Departments across a multicultural platform. I feel that I am confident and excellent communicator and am completely at ease with interacting and influencing piers, partners, subordinates and executive management, both internally and externally to my working environment. Throughout my career, I have remained technically competent, complemented by my training and experience with Prince 2 and ITIL methodologies. I am a strong communicator, who is confident and experienced in influencing business and IT stakeholders-up to and including-CIO/Managing Director Level.  less

    project-management technical-analysis itil nagios account-management microsoft-exchange-server virtualization microsoft-virtual-server direct-marketing social-media-marketing google-apps google-docs blackberry-app-development data-backup data-center-operations database-management insurance-consulting risk-management yahoo-messenger skype requirement-management requirements-analysis vendor-management-systems budgeting helpdesk-support service-level-management oracle-e-business-suite microsoft-hyper-v-server vmware-administration vmware-esx adobe-dreamweaver disaster-recovery business-continuity-planning freepbx domain-migration ldap network-security network-administration network-planning agile-software-development basecamp business-process-modelling business-intelligence business-analysis business-it-alignment business-coaching 00 more less
    • $38.89 HOURLY RATE
    • 5.0
    • 5562 HOURS
    • CYPRUS
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 7 TESTS
  • System Administrator/Scripts Write/Cloud Expert/Security Consultant

    Hi there, I am a 30 years certified System Administrator you wish getting help from : I am an LPI(101 & 102),RHCE certified, Automation king!! I have rich experiences in a wide range of software and systems over the last … more

    Hi there, I am a 30 years certified System Administrator you wish getting help from : I am an LPI(101 & 102),RHCE certified, Automation king!! I have rich experiences in a wide range of software and systems over the last 15 years, the most notable skills are : 1-Linux System Administartion : I have installed, configured, repaired, and managed so many Linux systems (more than I can remember) since 2006. I started with Fedora, then centos and ubuntu. 2- Scripting (My Favorite!) : I do enjoy very much with scripting especially for automation purposes, and I am very experinced with it, on both linux (bash) and windows (autoit - batch). I can automate all the tasks even those that don't talk to the command line in windows. I made for example in past, a fully unattended Windows installation CDs that is fully customized to include all the software my customers need without asking single question ! and on Linux I use Bash scripting Language to handle almost every aspect of linux and I did wrote so many scripts for various tasks. 3- Hosting Services : I have installed and managed previously many control panels for hosting and administration, that includes Cpanel, Plesk, ISPconfig, Webmin, Usermin, AWS, DigitalOcean, rackspace, cloud providers and more ! and in addition to that I can run the hosting services directly myself with no need for a control panel. I managed standalone software like : Apache, MySQL Server, ws-ftpd, proftpd, lighttpd with fast cgi, thttpd, dovecot, postfix and other servers ! I can also build/manage any hosting services, including shared hosting, VPS and dedicated servers. 4- VPN Services: I have installed and configured many servers that provided VPN services, including PPTP and OpenVPN services. I have even created a custom control panel for the customers and link it with automation scripts I wrote to better help the client managing his customers. (see the following picture): http://img687.imageshack.us/i/screenshotrsl.png/ And besides I am the solo developer of vpnplatform (vpnplatform.org/team) ;) and my clients consider me the best VPN guy on odesk. 5- Figting Malware: I can get your windows box clean even from the hidden malware and spyware trojans. I can secure your box and keep it safe and protected. I have fought malware since 2001 achieving great results like : cleaning big networks from viruses and worms and keeping it up and running in hostile environments for months with almost no downtime ! Also, I've built an app I called (Automated Malware Wizard), that would backup clinets hard drives and then GUARANTEE the cleaning of them, then update their software to close any possible vulnarables. I can customize it to you to fit your needs (If you intend to run a malware-cleaning and maintainance firm/utility). 6-Networking : I've been an ISP CEO before, and delivered internet services for more than 200 local subscriber when I worked at Hamad ISP. 7- VOIP: I am familiar with Asterisk and Asterisk GUI Installations, from scratch to fully working installation ! 8-Virtualizaion : I am very good with VMware and VirtualBox, I used them for years as a combination with hosting services. 9-Managing Mailing lists : I can manage your Email lists and make it away from SPAM lists by playing fair and square, I managed lists before, some of them got thousands of subscribers, I can clean the list also of all invalid/outdated subscribes by catching all email bounces using (my experience was with phplist script). 10- PHP/MySQL : I can develop web pages using a mixture of several technologies including html/css/php/mysql/javascript. And Finally, I can perfectly read, write and talk English Language and you can contact me over email, sms or mobile ! I perfectly speak English Language. I am ready to move to your job location if needed. I respect my work and give it every effort I can while keeping job's secrets secured and not to be shared with any 3rd party. You may see my attached C.V. and my odesk profile at: https://www.odesk.com/users/~~9b6150fc1d75d477 Note: I can adjust my availability time to suite your needs. Best wishes Ahmad  less

    openvpn virtualization virus-removal technical-support network-administration ubuntu centos winautomation-scripting autoit asterisk bash security vpn arabic translation-english-arabic translation-arabic-english mail-server-implementation sendmail email-technical-support linux-system-administration computer-maintenance dns vmware-administration squid php mysql jquery css html java paypal-api network-security adobe-dreamweaver bash-shell-scripting wireless-security 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 1037 HOURS
    • PALESTINIAN TERRITORIES
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 6 TESTS
    ASSOCIATED WITH:
  • Manual QA, QTP/UFT Automation expert

    Having 7+ years of experience in Manual Testing and Test Automation using QTP/UFT (Quick Test Professional / Unified Functional Testing ), QC (Quality Center ALM) and other tools. Expert Trainer in QTP/QC and Manual Testing. Worked for various MNC clients … more

    Having 7+ years of experience in Manual Testing and Test Automation using QTP/UFT (Quick Test Professional / Unified Functional Testing ), QC (Quality Center ALM) and other tools. Expert Trainer in QTP/QC and Manual Testing. Worked for various MNC clients on various domains like Health care, Finance, Banking, Mutual fund and Telecommunications for their products on Web, Desktop and Console based applications like Mainframes. Well versed in various Manual Testing techniques, framework design and handling complex problems in Test automation, understanding clients requirements, issues and providing timely solutions, provide best support to the client in all aspects for them to be successful and maintain confidentiality of client project information for life time.  less

    software-testing automated-testing winautomation-scripting hp-quality-center hp-qtp regression-testing functional-testing unit-testing black-box-testing ab-testing database-testing manual-testing usability-testing user-acceptance-testing network-security web-testing test-automation 00 more less
    • $11.11 HOURLY RATE
    • 5.0
    • 1454 HOURS
    • INDIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 1 TEST
  • Systems/Server Administrator / Network Admin / IT Service Desk Analyst

    CAREER OBJECTIVE: To deliver with the highest efficiency the technical skills and experiences learned combined with personal values and desirable attitudes. Meet the client’s expectation and satisfaction towards company success. SKILLS: NETWORK SECURITY ADMINISTRATION: ** Proficient in Network Security … more

    CAREER OBJECTIVE: To deliver with the highest efficiency the technical skills and experiences learned combined with personal values and desirable attitudes. Meet the client’s expectation and satisfaction towards company success. SKILLS: NETWORK SECURITY ADMINISTRATION: ** Proficient in Network Security and Network Problem Troubleshooting. ** Experience in configuring of High End Enterprise CISCO Routers, Summit Extreme L3 and Alcatel Switches. ** Strong knowledge in Network Configuration, VOIP and Network Design Infrastructure of LAN and WAN convergence. ** Strong knowledge in IP Addressing / Subnetting IPV4. ** Strong knowledge in Wireless LAN and 802.1x authentication network infrastructure. ** Strong knowledge in Routers with different Routing Protocols. SYSTEMS SUPPORT AND SERVER ADMINISTRATION: ** Experience in Windows Server 2008 & 2003 Active Directory Administration. ** Experience in Microsoft Exchange 2010 / 2003 Administration. ** Server Virtualization Experience ** Experience in Hyper-V, Hypervisor or Virtual Machine ** Experience in Symantec Backup Exec 2012/2010 and Symantec Endpoint Protection Manager. ** Experience in Amazon Route 53 Domain Management. ** Strong knowledge in Windows OS platforms, Wordpress and SonicWall. ** Strong Desktop Support troubleshooting skills (Hardware & Software). ** Knowledgeable in Citrix Administration. ** Software Installation of Anti-virus, Windows and Linux Red Hat platforms. ** Virus Removal and Prevention. IT SERVICE DESK SUPPORT (with ITIL concepts): ** 1st and 2nd line technical support; answering support queries via phone, email, remote and desk-side support. ** Maintained a high degree of customer service for all support queries and adhere to all service management principles. ** Take ownership of user problems and be proactive when dealing with user issues and to log all calls in the service desk ticketing system. ** Monitoring of ticket queue and ensure all request and issues are resolved in an efficient and timely manner. ** Set up, install and test PCs and peripherals for users. ** Served as technical resource to answer questions, identify needs, make recommendations, and carry out research. ** Maintained professional and technical knowledge by reviewing related professional publications. ** Undertake any other reasonable duties as requested by the IT Manager and Service Desk Team Leader. ACHIEVEMENTS: ** Completed and Passed Japanese Elementary 1 Course.  less

    security network-administration computer-networking japanese google-searching email-technical-support email-handling technical-support network-security wireless-network-implementation microsoft-exchange-server microsoft-hyper-v-server 00 more less
    • $5.56 HOURLY RATE
    • 4.9
    • 5987 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 1 TEST
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