Security Freelancers

Showing 74 freelancers

Security Freelancers

Showing 74 freelancers

  • 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
    • 4659 HOURS
    • MEXICO
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 4 TESTS
  • Senior Software Developper

    Overall , i have more than 15 years of development experience in multiple technical and human environment. For both start-ups and blue chip companies , i did contribute to the success of numerous projects , leveraging on my object oriented background , mainly in … more

    Overall , i have more than 15 years of development experience in multiple technical and human environment. For both start-ups and blue chip companies , i did contribute to the success of numerous projects , leveraging on my object oriented background , mainly in Java ( Swing , GWT , SmartGwt , Android ) Of course i am very knowledgeable in web technologies ( javascript / html / css ) and most of relational databases ( MySql , Oracle , SqlServer ..) , JPA persistence framework ( Hibernate ) Capable of communicating in English,French, and to some extent, German and Spanish , i am eager to take every challenge. As a developer , or as a lead developer, as i did before. Whether its about 'standard' web / mobile development , or advanced endeavor ( data mining , principal component analysis ) i am eager to take the challenge. Regards Keywords section for ODesk search ( If i type 'smartgwt' or 'SmartGwt' i don't get the same result so obviously search feature has a case sensitivity bug ) smartgwt About RESPONSIVENESS : I ALWAYS reply to requests EXCEPT SPAM. I got a 'Respond Rarely' evaluation from Odesk due to this. For instance i had more than 25 proposals from the same company which where either not matching my skills or well below my rate. I don't waste my time with this. If you ODesk guys read this , please implement a filter to reject proposals from some clients, or for proposals below a given rate. Thank you  less

    java android-app-development gwt hibernate extjs website-development report-writing spring-framework mysql postgresql mongodb sql olap javascript payment-gateway-integration swing security html css apache-tomcat junit maven eclipse c# apache-ant 00 more less
    • $50.00 HOURLY RATE
    • 5.0
    • 1519 HOURS
    • SWITZERLAND
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 4 TESTS
  • Web Developer & Web Security Expert

    Web developer with having 5 years of experience. My core expertise in PHP, MySQL,xHTML,HTML5,CSS,CSS3.0,javascript and jQuery. I am also familiar with Payment gateways integration such as paypal,authorize.net, click bank, Ecommerce Development, System … more

    Web developer with having 5 years of experience. My core expertise in PHP, MySQL,xHTML,HTML5,CSS,CSS3.0,javascript and jQuery. I am also familiar with Payment gateways integration such as paypal,authorize.net, click bank, Ecommerce Development, System Automation through cydec,infutionsoft,aweber and iContact both in CMS and Core development. I am mostly available on skype/facebook/gmail. So there is no problem in communication with me. I have done: Opt-in pages Sales Pages Landing pages 1Click Upsell pages Sales Funnel split testing Payment Gateways integration Static Web Development Wordpress base web Development Drupal base web development psd to html/wordpress/drupal Theme and Plugin customization  less

    html html5 psd-to-html css css3 wordpress drupal php mysql jquery psd-to-xhtml security 00 more less
    • $11.11 HOURLY RATE
    • 5.0
    • 1043 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 25 PORTFOLIO ITEMS
    • 9 TESTS
    ASSOCIATED WITH:
  • ASP.NET MVC, RAZOR, Entity Framework, JQUERY,IPN. Paypal

    I have around 6 yrs of IT experience, almost all in Microsoft Technologies like Asp, Asp.net, MVC,ADO.NET Entity Framework, LINQ to SQL ,MS Entity Framework, Design patterns, HTML 5, jQuery, javascript, .net framework 2.0,3.5 … more

    I have around 6 yrs of IT experience, almost all in Microsoft Technologies like Asp, Asp.net, MVC,ADO.NET Entity Framework, LINQ to SQL ,MS Entity Framework, Design patterns, HTML 5, jQuery, javascript, .net framework 2.0,3.5,4.0, SQL Server, WCF. Experience in Object Oriented Analysis and Design methodology with strong knowledge and experience with the Design Patterns MVP, MVVM, Factory, Singleton, Inversion of control (IOC), Prototype, Visitor, Adapter and Façade etc. My objective is to provide cost effective and high quality solutions. Thanks  less

    .net-framework windows-azure security c# tfs linq-to-sql asp.net-mvc 00 more less
    • $25.00 HOURLY RATE
    • 5.0
    • 3482 HOURS
    • INDIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 5 TESTS
    ASSOCIATED WITH:
  • Zend, CI, YII, CakePHP, Wordpress, Magento specialist

    I am a PHP professional working since 2007. My qualifications: Strong Knowledge of OOP(Object Oriented Programming) Strong knowledge in PHP, MySQL, HTML5, CSS3 Frameworks - Codeigniter, Yii CSS Frameworks - 960 Grid System, Twitter Bootstrap, Jquery Mobile, YUI Pure Javascript Ajax … more

    I am a PHP professional working since 2007. My qualifications: Strong Knowledge of OOP(Object Oriented Programming) Strong knowledge in PHP, MySQL, HTML5, CSS3 Frameworks - Codeigniter, Yii CSS Frameworks - 960 Grid System, Twitter Bootstrap, Jquery Mobile, YUI Pure Javascript Ajax Js Framework - Jquery, MooTools CMS - Joomla, Wordpress Ecommerce - Magento, Presta, opencart, OS Commerce Payment Gateway Security Management skill for web services and portals Linux administration/ Server setup/ Shell Scripting/ Server Security/ Cron Jobs Red5 Server Install and configure. LAMP Development  less

    php codeigniter yii-framework zend-framework wordpress mysql oscommerce magento jquery jquery-mobile css3 html5 xml rest adobe-illustrator javascript regular-expressions xml-web-services smarty curl crm sugar-crm security network-security web-design cakephp ibm-lotus-symphony symfony smtp node.js iphone-app-development objective-c phonegap android-app-development 00 more less
    • $16.67 HOURLY RATE
    • 4.8
    • 2697 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 17 PORTFOLIO ITEMS
    • 8 TESTS
    GROUPS:
  • Linux System Admin, Tech & Hosting Support, cPanel/WHM Specialist

    I have more than 5 years in networking industries , 4 years in System Administration and hosting environment. Bsc in Computing .Certified with CCNA,CCNP in progress. 4 years in web hosting industries with Technical Support, System Administration and Business Development … more

    I have more than 5 years in networking industries , 4 years in System Administration and hosting environment. Bsc in Computing .Certified with CCNA,CCNP in progress. 4 years in web hosting industries with Technical Support, System Administration and Business Development (web hosting) experience. TechnicalSkills and Experience: Ability to build, manage and troubleshoot control panel * Cpanel/WHM - DirectAdmin - PLESK - WebMin - Kloxo control panels Operating System * CentOS * Fedora Core * Ubuntu Including the following: • WWW Servers - Apache. • Control panels WHM/cPanel • Networking - TCP/IP, NFS, Telnet, FTP, DNS, DHCP, NAT, ifconfig, route, netstat, xinetd, HTTP, NIS/YP • Mail - SMTP, POP, IMAP, Qmail, Sendmail • Admin Tools - admintool ,linuxconf, vmstat, iostat, top, trace route, ping, sar, ntop, webmin • Backup - tar, cpio, dump (ufsdump) • Security - SSH, SSL, IPchains, IPtables, TCP Wrappers, Tripwire, port scanners, password crackers Server Security hardening * Firewall [csf/apf/iptables] * Tripwire * chkrootkit , rkhunter * Secure Shell * PHP hardening, sysctl hardening etc Web Server hardening and tweaking. * Apache optimization * Adding mod_security rules * Mod_evasive , mod_limitipconn for preventing DDOS * Tweaking of apache directives Billing System * WHMCS - Blesta Database * MySQL MTA * Qmail with SpamAssassin + ClamAV * Exim with SpamAssassin + ClamAV Primary Language * Arabic Secondary Language (excellent) * English * Please note I apologize to accept any work that contain Adult contents, Wine, Dating and gambling.  less

    network-administration linux-system-administration cpanel whm plesk chat-support email-technical-support arabic whmcs amazon-ec2 amazon-s3 amazon-web-services centos apache-administration security exim iptables fedora mail-server-implementation 00 more less
    • $16.67 HOURLY RATE
    • 4.9
    • 1384 HOURS
    • EGYPT
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 9 TESTS
    ASSOCIATED WITH:
  • 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
    • $33.33 HOURLY RATE
    • 5.0
    • 1179 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 16 PORTFOLIO ITEMS
    • 6 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • Linux system administrator

    I have great experience in * Linux maintenance (RHEL, Debian, Ubuntu) * Virtualization: (Vmware, Openvz, Virtuozzo, Xen, KVM), * Cloud hosting (Amazon EC2, AWS, S3), * Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies), * Web servers (apache, nginx … more

    I have great experience in * Linux maintenance (RHEL, Debian, Ubuntu) * Virtualization: (Vmware, Openvz, Virtuozzo, Xen, KVM), * Cloud hosting (Amazon EC2, AWS, S3), * Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies), * Web servers (apache, nginx, lighttpd, tomcat), * Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin/amavis, courier, dovecot), * Bulk marketing (Dkim, spf, high speed/inboxing, interspire), * Automation (puppet, perl/shell/awk scripting), * Monitoring (nagios, zabbix), * Hosting panels (Cpanel/WHM, Plesk, Directadmin). Java, J2EE, Maven, JUnit(DTDUnit, JMock, StrutsTestCase, DBUnit), apache commons, SQL (pl-sql/MySQL/ORACLE/MS SQL), HTML, JS, AJAX, CSS, Spring, Struts, Tiles, ORM/Hibernate, XML, XSLT, Jasper, Ant, JMeter  less

    linux-system-administration lamp-administration mail-server-implementation network-administration mysql apache-administration virtualization amazon-ec2 amazon-web-services amazon-s3 unix-shell nagios bash openvpn security squid subversion iptables dhcp exim centos plesk ubuntu cpanel whm nginx postfix rhel 00 more less
    • $22.22 HOURLY RATE
    • 4.8
    • 1220 HOURS
    • BELARUS
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 11 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • Linux, Hadoop, Clustering and Cloud Computing expert

    I'm 12 years experienced Linux Administrator. I'm professional in: Design, planning and deployment of Hadoop clusters, high available Linux web farms, NoSQL clusters (Riak, Cassandra, Couchbase, CouchDB). Design and deployments of public/private cloud infrastructures. Linux Networking & Security … more

    I'm 12 years experienced Linux Administrator. I'm professional in: Design, planning and deployment of Hadoop clusters, high available Linux web farms, NoSQL clusters (Riak, Cassandra, Couchbase, CouchDB). Design and deployments of public/private cloud infrastructures. Linux Networking & Security Concepts. Design, deployment and administration of multi node web farms. Linux Clustering and H-A ,Service level load balancing and clustering Linux services (WEB,MAIL,PROXY,DNS,LDAP,SAMBA etc) OS security concepts, Monitoring tools (Nagios, Munin, Ossec, SNMP etc) Bash scripting MySQL Administration, Server optimization Configuration and optimization of JVM`s and Java Application Servers Virtualization solutions (VMWare, XEN, CITRIX etc) And more !  less

    linux-system-administration hadoop hbase apache-hive amazon-ec2 lamp-administration amazon-web-services unix-shell clustering jboss mysql vmware-administration security ldap couchdb nagios cassandra rightscale scalr apache-tomcat munin rackspace-cloudservers kerberos ubuntu nosql nginx virtualization kvm-virtualization xen-hypervisor 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 3112 HOURS
    • ARMENIA
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 5 TESTS
    ASSOCIATED WITH:
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