Security Freelancers

Showing 25 freelancers

Security Freelancers

Showing 25 freelancers

  • Wordpress Developer, Webmaster, Sytem Admin, Security Consultant

    I've been in the web development field for more than 4 years, when I started developing PHP/MySQL applications for a local company. I've worked on a variety of applications. Over the last 4 years I've dedicated … more

    I've been in the web development field for more than 4 years, when I started developing PHP/MySQL applications for a local company. I've worked on a variety of applications. Over the last 4 years I've dedicated myself to work with Wordpress, so I'm capable of creating complete Wordpress sites from scratch, that include customized code (writing modules), convert/create themes, SEO, Social Media Integration and Hardening. I also have worked on Windows and Linux servers, performing installations / configurations / hardening and have some experience in the following areas: SQL, PHP, MySQL, XHTML, CSS.  less

    wordpress seo xhtml css security php linux-system-administration 00 more less
    • $27.78 HOURLY RATE
    • 5.0
    • 1867 HOURS
    • COLOMBIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 3 TESTS
  • Web development+PHP+mysql+wordpress+Smarty +prestashop-Content writing

    Over the last 8 years, I have developed a wide range of websites using HTML, DHTML, PHP, and MySQL, wordpress, codeigniter, Google API v3, Facebook API including sites for start up companies and small businesses. My core competency lies in … more

    Over the last 8 years, I have developed a wide range of websites using HTML, DHTML, PHP, and MySQL, wordpress, codeigniter, Google API v3, Facebook API including sites for start up companies and small businesses. My core competency lies in complete end to end management of websites ,php, mysql, wordpress, blog, bbolg, prestashop, codeigniter, interspire, content development, data entry, accounts, Google API v3 etc..  less

    php mysql security html css content-writing wordpress prestashop facebook-api google-maps-api 00 more less
    • $11.11 HOURLY RATE
    • 4.9
    • 1278 HOURS
    • INDIA
    • LAST ACTIVE
    • 41 PORTFOLIO ITEMS
    • 10 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • 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
  • Website developer || Internet Marketer

    IT is something I am always passionate about. I have been working as an IT professional for three years now. As a result of all my good qualities I have experience with firms like Virtual Assistant Staffing LLC, CyberBD, October … more

    IT is something I am always passionate about. I have been working as an IT professional for three years now. As a result of all my good qualities I have experience with firms like Virtual Assistant Staffing LLC, CyberBD, October Labs and Blackbird. I am hard worker, flexible, co-operative, good in manners, and very professional in my profession. I believe I am also a quick learner. My skills are primarily based on Wordpress, Joomla, Search Engine Optimization, Social Media Marketing, Data Entry, Project Management, Administrative tasks, HTML, CSS etc. For more information please refer to my linkedin profile: http://bd.linkedin.com/in/skdinar/  less

    jomsocial red5 joomla web-design website-development cpanel security wordpress adobe-photoshop adobe-illustrator seo social-media-marketing virtual-assistant iphone-app-development 00 more less
    • $8.89 HOURLY RATE
    • 4.6
    • 1979 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 7 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • 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
    • 1388 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:
  • Professional Server Help (Linux Administrator)

    Melbourne based System Administrator with expertise in Linux Server optimization, security and service deployment on VPS/Physical, Cloud Platforms(AWS,Rackspace). I believe in getting the job done with the best possible quality. Period. Clear timely communication with the clients … more

    Melbourne based System Administrator with expertise in Linux Server optimization, security and service deployment on VPS/Physical, Cloud Platforms(AWS,Rackspace). I believe in getting the job done with the best possible quality. Period. Clear timely communication with the clients and their team is always my priority. I have been working with all the major providers: Rackspace, Amazon, Softlayer, Godaddy, Hostgator, Bluehost, Linode, DreamHost, Mediatemple, Lunarpages. Expertise in Linux Administration is as follows (but not limted to) Server Distributions: RedHat, Centos, Fedora, Debian, Ubuntu, Gentoo, Suse, Mandriva, Opensuse, Knoppix, Slackware. Web servers: Apache, Lighttpd, Nginx, Tomcat File servers: Proftpd, Pureftpd, Vsftpd, Sftpd, TFTP, NFS, Samba DNS servers: Bind9, MyDNS, NSD Mail servers: Postfix(TLS,SASL), Exim, Sendmail, Qmail, Dovecot, Courier. Logging services: Syslog, Rsyslog, Syslog-ng Proxy servers: Squid(forward and reverse proxy), nginx, pound, lighttpd. Firewalls: Iptable scripts and Advance Policies Firewall with bruteforce detection. Firewall configuration: NAT, IP Masquerade Jabber servers: Openfire, Ejabberd, Djabberd Database servers: MySQL, Postgresql Backup: Bacula, bash scripts. VPN: PPTP Virtualisation: Openvz/Virtuozzo, Xen, Qemu, KVM, VMware Server, Parallels Workstation, Virtualbox headless, HyperVM. Monitoring: Nagios, munin, zabbix, zenoss Automation: Puppet(fan), custom bash scripts. Revision control: Git(fan), Subversion Package management: yum, rpm, dpkg, aptitude, apt-get, emerge Security: Nessus, John The Ripper, Tiger, PGP, GPG, nmap, Openvas, Snort, Ettercap, arpwatch, SSH, SSL, TLS, TCP Wrappers, Ethereal, dsniff, tcpdump, portsentry, rkhunter, chkrootkit, clamav, SPF, Spamassassin, domain keys. Cloud computing: Amazon (EC2, EBS, S3, CloudWatch), Rackspace services. Assessment tools: sar, vmstat, iostat, mpstat, netstat, iptraf, iftop, lsof, ntop, serverstats Misc services: NTP, Cups, DHCP, Dnsmasq  less

    lamp-administration apache-administration linux-system-administration postfix whm iis unix-shell mysql vpn nagios munin ftp cpanel plesk nginx postgresql lighttpd subversion puppet-administration ssh iptables drupal wordpress domain-migration mail-server-implementation openvz virtualization redmine amazon-ec2 amazon-web-services amazon-s3 rackspace-cloudservers virtuoso bash exim firewalls ssl centos ubuntu security email-deliverability-consulting mailenable ffmpeg atlassian-jira python rhel 00 more less
    • $40.00 HOURLY RATE
    • 5.0
    • 1000 HOURS
    • AUSTRALIA
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 1 TEST
  • 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
    • 1035 HOURS
    • PALESTINIAN TERRITORIES
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 6 TESTS
    ASSOCIATED WITH:
  • MCSA certified Microsoft system administrator with more than 10years e

    Accomplished IT professional with more than 10 years practical internet experience. Skilled technology savvy self-starter, adept at securing, tuning, tweaking and maximizing the overall computer system performance. In depth understanding of managing mixed networks (Linux and Windows based).Able to … more

    Accomplished IT professional with more than 10 years practical internet experience. Skilled technology savvy self-starter, adept at securing, tuning, tweaking and maximizing the overall computer system performance. In depth understanding of managing mixed networks (Linux and Windows based).Able to work on own initiative or as part of a team and can deal with administrative duties competently.  less

    customer-service windows-administration windows-xp-administration technical-support customer-support seo technical-writing technical-analysis technical-documentation web-design website-development security administrative-support network-administration linux-system-administration project-management penetration-testing performance-testing computer-networking microsoft-outlook-development microsoft-exchange-server microsoft-small-business-server-administration isa-server data-entry database-administration data-analysis data-mining windows-nt-administration cpanel whm whmcs tcp-ip dns dhcp firewalls 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 7096 HOURS
    • BULGARIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 8 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • Mykhaylo Dobrovolskyy

    10+ years of Linux/Network experience with different systems. Finished and delivered SMB solutions to big corporate companies lie BNP Paribas, ABN AMRO or RBS. My main areas of knowledge are: 1) Networking (Cisco/Juniper/F5/BlueCoat and Linux/FreeBSD … more

    10+ years of Linux/Network experience with different systems. Finished and delivered SMB solutions to big corporate companies lie BNP Paribas, ABN AMRO or RBS. My main areas of knowledge are: 1) Networking (Cisco/Juniper/F5/BlueCoat and Linux/FreeBSD based solutions like vyatta/pfsense etc) 2) Security - Cisco IPS/IDS, CheckPoint, Linux/FreeBSD based, Juniper etc 3) Linux administration - mail system, database (mysql/mysql cluster), server with high load average, load balancers for server farms (Cisco/F5 based and Linux based like keepalived or apache/nginx with reverse proxy) 4) VoIP - Cisco/OpenSource(Asterisk and different installations based on asterisks like freepbx/elastix etc) There is a very small piece of my knowledge, I'm always looking for opportunity to grow and I'm pretty sure that if you give me tasks - I'll find out best way howto get it done.  less

    unix-shell mysql php cisco-routers cisco-ios security firewalls openvpn junos cisco-voip linux-system-administration freebsd freepbx asterisk bacula vpn haproxy 00 more less
    • $27.78 HOURLY RATE
    • 5.0
    • 3861 HOURS
    • NETHERLANDS
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
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