Network Security Developers & Programmers

Showing 35 freelancers

Network Security Developers & Programmers

Showing 35 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
  • Solution Architect for mobile, web based and SAP applications

    I am a Solution Architect with entrepreneurial skills. My skill sets are around niche technology areas and I particularly expertise in solving complex solutions (technology and business) and solve bottlenecks for business. I have worked with SAP for almost 10 … more

    I am a Solution Architect with entrepreneurial skills. My skill sets are around niche technology areas and I particularly expertise in solving complex solutions (technology and business) and solve bottlenecks for business. I have worked with SAP for almost 10 years and have lanscaped, designed and perfected heterogenous systems and Enterprise Application Integration. Identity Management, HANA is one more area where I excel. Allow me to serve your technology needs and boost your business. My expertise in relevance to the current technology suites run around various Java Script Frameworks, web applications, REST API, OAuth, Rails, Java/J2EE, CakePHP, etc.  less

    java javascript html5 ruby-on-rails cakephp sap-basis mobile-app-development ios-development sencha network-security 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 1148 HOURS
    • INDIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 5 TESTS
    ASSOCIATED WITH:
  • Network / Cisco / Linux Administrator / Cloud Expert / AWS / DevOps

    Self-motivated professional with strong work ethic and productive self-starter – proven with success being a freelancer at oDesk. Team player - Participated in multiple projects, joining large teams, effectively co-working with other professionals Effective leader - Took over leadership and managed team resources … more

    Self-motivated professional with strong work ethic and productive self-starter – proven with success being a freelancer at oDesk. Team player - Participated in multiple projects, joining large teams, effectively co-working with other professionals Effective leader - Took over leadership and managed team resources to achieve goals meeting deadlines 16+ years as an Systems Administrator 10+ years as Network Engineer 6+ years as Cloud Expert and SaaS Architect 3+ years @ DevOps Freelancer for last 5 years (over 20,000hrs worked @oDesk)  less

    amazon-ec2 perl python sql mysql unix-shell amazon-web-services postfix linux-system-administration network-administration network-security security cisco-routers cisco-asa firewalls vpn devops 00 more less
    • $55.56 HOURLY RATE
    • 4.9
    • 23232 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 10 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
    • 4661 HOURS
    • MEXICO
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 4 TESTS
  • Linux Administrator, AWS, Nginx, Ubuntu, CentOS, EC2, Plesk, HAProxy

    8+ years of experience in: ** LAMP/LEMP(Nginx) administration (Ubuntu, Debian, Centos,RHEL,HAProxy, Ruby/Thin deployment DevOps, Python/Django deployment DevOps,Nagios..) ** Amazon web services - AWS (EC2, VPC, RDS, S3, Route53, Cloudfront, Elastic Load Balancer, AutoScaleing, etc..) ** Nginx rewrites … more

    8+ years of experience in: ** LAMP/LEMP(Nginx) administration (Ubuntu, Debian, Centos,RHEL,HAProxy, Ruby/Thin deployment DevOps, Python/Django deployment DevOps,Nagios..) ** Amazon web services - AWS (EC2, VPC, RDS, S3, Route53, Cloudfront, Elastic Load Balancer, AutoScaleing, etc..) ** Nginx rewrites ** Linux troubleshooting ** VPS providers: Linode, Rackspace, Amazon(AWS), MediaTemple, HostGator, Cloudflare, NameCheap, GoDaddy, DigitalOcean, EC2 ** Parallels Plesk ** VPS administration ** AWS EC2 administration ** VMware vSphere ** NewRelic ** Nagios monitoring ** Elastic Load Balancer ** LINUX deployment and migration ** Rackspace Cloud Services ** Ruby on Rails app deployment ** Python - Djengo app deployment ** CPANEL, PLESK, WEBMIN, SHELL/SSH administration ** proftpd, pure-ftpd, pure ftp ** DNS, BIND, PowerDNS ** SSL certificates ** Site migration ** Network troubleshooting ** CSF firewall ** VPN ** Cisco, Mikrotik, Juniper Networks, Extreme Networks.. ** Linux PENTAHO deployment ** Squid, AiCache, AiScaler ** CVE-2014-0160 - OpenSSL Heartbleed patching. EXPERIENCE: Knowledge in Linux networking and service management, such as APACHE server, Nginx, LAMP, LEMP, LNMP, MYSQL, POSTGRESQL, tcpdump, WIRESHARK, tshark, URL rewrite. Eight years of first hand experience in network and linux administration, support and Core Network design in Telecom environment. Excellent knowledge of various tasks such as: routing, BGP, VPN, Layer 3 networking(Routing), Layer 2 networking (LAN switching), VLAN, OSPF, RIP, network and packet troubleshooting. Working experience with various network equipment such as: Cisco, Juniper Networks, Extreme Networks, HP networking, MikroTik RouterOS, Ericsson OSS, Redback Networks and so on.. Experience with various providers such as: -AMAZON WEB SERVICES (AWS, EC2..) -RACKSPACE -HOSTGATOR -GoDaddy -MediaTemple -Cloudflare -NameCheap -LINODE -QuickWeb -HAProxy -etc.. -WHMCS RESELLER setup and migration on project or permanent basis. Including DNS, EMAIL, WORDPRESS migration -CPANEL, PLESK, WEBMIN, H-sphere, SHELL administration -SSL certificates Also available for packet and network congestion inspection. Having problems with BGP load balancing in multihome environment, need help or advice, contact me! :) Dedicated SERVICE MONITORING on own server with escalation on your own mail address  less

    amazon-ec2 lamp-administration linux-system-administration network-administration plesk cpanel nagios tcp-ip cisco-routers wordpress amazon-web-services rackspace-cloudservers computer-networking bgp juniper-routers dsl-troubleshooting network-security vpn ospf openvpn dns bash mikrotik-routerboard mikrotik-routeros 00 more less
    • $36.00 HOURLY RATE
    • 5.0
    • 1384 HOURS
    • CROATIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 7 TESTS
    GROUPS:
  • 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:
  • Security Consultant, Penetration/Vulnerability Tester,Ethical Hacker

    I'm a senior professional security expert having more than 7 years industrial experience.I specialize in Black Box/White Box Penetration Testing,Computer Forensics,Code Auditing and Ethical hacking. Academic and Professional Certification: ☛ MSc In IT Security & Computer Forensic … more

    I'm a senior professional security expert having more than 7 years industrial experience.I specialize in Black Box/White Box Penetration Testing,Computer Forensics,Code Auditing and Ethical hacking. Academic and Professional Certification: ☛ MSc In IT Security & Computer Forensic  ☛ Certified Ethical Hacker ➳ CEH ☛ Certified Information Systems Auditor ➳ CISA ☛ Computer Hacking Forensic Investigator ➳ CHFI ☛ Certified Information Systems Security Professional ➳ CISSP As an Ethical Hacker and IT Security Specialist I have done following projects in my professional career. ✿✿✿ Penetrated and patched more than 20 Canadian and Russian Government Sector's Servers and five Malaysian Government Sector's Servers including Ministry of Work (KKR-22 Servers), Ministry of Health (MOH-67 Servers), Ministry of Education (MOE -17 Servers). ✿✿✿ Secured more than 100 servers including windows 2008,2010, Linux,Apache,Unix and many more. ✿✿✿ Identified security issues and risks management to various platforms such as e-commerce based websites,WordPress,Magento,Joomla, Expression Engine, Drupal and many more. ✿✿✿ Formulated innovative solutions to real-world problems by doing Penetration Testing (Black Box/White Box) ,Audit Testing and real life attack. ✿✿✿ Evaluated many of largest company's security vulnerabilities such as Dell,HP,Microsoft,High Tech Crime Solutions,H-A Links Solution,Kingdom Market Solution and many more. ✿✿✿ Trained more than 200 IT professionals from around the globe including Defense IT Security Expert, Mobile Operators Security Manager, PHD & Masters Students in IT security field. ✿✿✿ Developed custom tools for automating Security testing in OWASP community . ✿✿✿ Tracked developments and logging in reports. ✶✶✶ Brilliant understanding ,excellent command and practical exposure to : ➳ OWASP TOP 10, SANS TOP 20, CWE, OSSTMM, ISSAF standards ✔ Vulnerability Analysis/Assessment & Pen-testing Box : ➳ Kali Linux,BackTrack 5r3,Blackbuntu,BackBox,WeakerThan 3.6,GameOver 0.1 null, Metasploit & Metasploitable, OWASP Broken Web Apps1.0, Dojo,Whydah 1.0,Matriux Ec Centric ✔ Vulnerabilities and Protection ➳ SQLI,XSS,XSRF,CSRF,RTE,LFI,IIS Vulnerabilities,DNN,DDos Attack,Click Jacking,Phishing,Middle Man Attack,ARF Spoffing ✔ Programming Languages: ➳ Shell Scripting ,C,C++,C#,Perl,Python,Ruby on Rails,Visual Basic,Batch File. ✔ Web Design Language: ➳ HTML,XHTML,PHP,JavaScript,jQuery ✔ Network Protocols ➳ TCP/IP, NetBIOS / Netbeui, IPX, OSI) and associated technologies such as DNS, FTP, HTTP ✔ Network Traffic Monitoring Tools ➳ Network General Sniffer, LANalyzer, NetXray ✔ Network Topologies and Others ➳ Token Passing, Ethernet,F-Secure SSH & Anti-virus,Skybox,Encryption, Social Engineering ,Reverse Engineering,VPN, SSL,,PCI-DSS Compliance ✔ Firewalls ➳ Gauntlet, Cisco PIX, CheckPoint, Raptor Services that I provide : ➳ Vulnerability Assessment, Penetration Testing , Black Box | White Box Testing | Code Auditing | Network Security Testing | Cyber Fraud Investigation and anything related with Hacking, Security and Forensic. ➳ Removal of Malware | Viruses | Backdoors | Shell | Phishing | Spam and any other malicious codes ➳ Recovery and Securing Joomla | Wordpress | Drupal | OsCommerce | Magento | OpenCart | Wordpress | PHPBB | Vbulletin ➳ Recovery and Securing Custom Platforms I have ability to work under pressure and meet deadlines.Client's satisfaction is my first priority.  less

    penetration-testing vulnerability-assessment risk-management virus-removal security network-security software-testing black-box-testing firewalls website-development wordpress joomla magento html xhtml php javascript c c++ c# perl python microsoft-visual-basic linux-system-administration ubuntu mysql 00 more less
    • $55.56 HOURLY RATE
    • 5.0
    • 1179 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 16 PORTFOLIO ITEMS
    • 6 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • Microsoft Certified Systems Engineer/Cisco Certified Network Associate

    Microsoft Server Products • Designing, implementing and maintaining following Active Directory services and functionalities Active Directory Domain Services Active Directory Rights Management Services Active Directory Certificate Services Active Directory Lightweight Directory Services Site Replication Group Policies Designing, implementing and maintaining of … more

    Microsoft Server Products • Designing, implementing and maintaining following Active Directory services and functionalities Active Directory Domain Services Active Directory Rights Management Services Active Directory Certificate Services Active Directory Lightweight Directory Services Site Replication Group Policies Designing, implementing and maintaining of following Windows 2012/2008/2003 functionalities Small Business Server Editions DNS DHCP Network Load Balancing/Clustering (Active/Passive) Implementation, Administration and Maintenance of Microsoft Exchange Server 2010/2007/2003 Implementation, Administration and Maintenance of Microsoft System Center Configuration Manager 2007 Implementation, Administration and Maintenance of Microsoft System Operation Manager 2007 Implementation, Administration and Maintenance of Microsoft TMG Firewall Implementation, Administration and Maintenance of Microsoft Hyper V Server Virtual Desktop Infrastructure CISCO ROUTERS CISCO SWITCHES/MULTI LAYER SWITCHES CISCO ASA FIREWALL SONIC WALL FIREWALL  less

    computer-networking computer-maintenance computer-repair operating-systems-development microsoft-exchange-server systems-development microsoft-hyper-v-server data-encoding microsoft-hyper-v microsoft-active-directory cisco-asa cisco-routers isa-server microsoft-small-business-server-administration mail-server-implementation microsoft-virtual-server network-administration network-security wireless-network-implementation network-planning hardware-troubleshooting 00 more less
    • $16.67 HOURLY RATE
    • 3.9
    • 2439 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 7 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • 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:
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