Network Security Developers & Programmers

Showing 159 freelancers

Network Security Developers & Programmers

Showing 159 freelancers

  • Cisco/Checkpoint Security Expert

    Experienced in handling Projects assigned by Companies, Clients and completing them on expected time. -Experienced in CRM Management. -Experienced in Network Support from 2007-2011 -Experienced in Cisco ASA/Checkpoint -Experienced in Wireless Networks Security. -Experienced in Cisco Routers/Switches. -Experienced in Desktop/Laptop/Servers Support. -Experienced in Windows Support, Antivirus Mcafee, Symantec, Trend-Micro.

    project-management network-security 00 more less
    • $11.11 HOURLY RATE
    • 4.9
    • 0 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 9 TESTS
    ASSOCIATED WITH:
  • Windows System Admin, MCSE, CentOS, OpenGTS, OpenERP CCNA Security Exp

    Over the last 10 years, providing service and online trainings on IT fields such as LAN, Wireless, Windows Administration, Linux, setup ERPs. I also very well in website setup for small companies.  B.Tech – CSE and Diploma in Computer Engineering … more

    Over the last 10 years, providing service and online trainings on IT fields such as LAN, Wireless, Windows Administration, Linux, setup ERPs. I also very well in website setup for small companies.  B.Tech – CSE and Diploma in Computer Engineering with over 15 years of fruitful & extensive experience in infrastructure management entailing system administration, Security Admin, handling networks, managing user accounts, installing resource domain server, troubleshooting of LAN/WAN Network, Remote Installation Services.  Currently associate with Technocrats, Yamunanagar as IT Consultant and Freelancer IT Consultant.  Extensive Knowledge of Windows 2008/2003, Checkpoint NG/AI and NGX R60, SQL Server 2000, MS Exchange, Symantec Antivirus product, Lotus Notes 6.5, SCO Unix, Redhat Linux, MS Web Server IIS with CCNA Certification.  Proficient in monitoring network performance, commissioning activities, upgrading software’s. Secured exposure in service support activities.  Acquired wide exposure in handling matters related to installing software, diagnosing computer related malfunctions, troubleshooting & maintenance of the entire system.  Well versed with router configuration & maintenance of major server & network systems, solving problems related to Mail/ ISA/ Web Servers, implementing TCP/IP core networking services.  Excellent communication and interpersonal skills with proven abilities in resolving complex networking, hardware and software related issues.  less

    computer-networking windows-administration linux-system-administration cisco-routers network-security 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 5 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
  • system administrator, python developer, IT-security specialist

    Dear potential client! I am a highly qualified professional with extensive experience. The area of my interests - Unix / Linux systems, security, and automation. I have many projects in the field of security, automation, installation and configuration of various web services … more

    Dear potential client! I am a highly qualified professional with extensive experience. The area of my interests - Unix / Linux systems, security, and automation. I have many projects in the field of security, automation, installation and configuration of various web services. I know several programming languages, but my favorite language now is Python. Self-motivated and responsible, I trying always to achieve goals that have been set.  less

    arduino unix-shell unix-system-administration network-security puppet-administration autoit web-scraping microsoft-excel python zabbix 00 more less
    • $18.89 HOURLY RATE
    • 5.0
    • 33 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 15 TESTS
  • I have over 5 years experience setting up social media accounts, creating marketing plans, building landing pages, setting up PPC campaigns, and am familiar with every other aspect of building a successful internet marketing campaign. All the big affiliate networks … more

    I have over 5 years experience setting up social media accounts, creating marketing plans, building landing pages, setting up PPC campaigns, and am familiar with every other aspect of building a successful internet marketing campaign. All the big affiliate networks are well known to me. Clickbank, warriorplus, shareasale, jvzoo, commission junction, ... I strive for perfection and full customer satisfaction in every project I do!  less

    social-media-marketing internet-marketing project-management translation-english-dutch facebook-marketing email-marketing social-bookmarking security network-security network-administration 00 more less
    • $22.22 HOURLY RATE
    • 4.4
    • 0 HOURS
    • BELGIUM
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 9 TESTS
  • Networking | Virtualization | Security

    1.Installing Windows Servers 2008/2012,Modifying,Configuring Server Core,Active Directory Domain Controller configuring, Managing Accounts,Organizational Units,Multiply local groups,Windows Firewall,IPv4,DHCP,DNS,Hyper-V, Share and NTFS persmissions,Configuring Printers. 2.Vulnerability Analysis,Assessment and Penetrate … more

    1.Installing Windows Servers 2008/2012,Modifying,Configuring Server Core,Active Directory Domain Controller configuring, Managing Accounts,Organizational Units,Multiply local groups,Windows Firewall,IPv4,DHCP,DNS,Hyper-V, Share and NTFS persmissions,Configuring Printers. 2.Vulnerability Analysis,Assessment and Penetrate testing, OWASP TOP 10 web apps testing,information gathering,password cracking,exploatation,wireless hacking,sniffing\spoofing. Removal of Malware,Viruses ,Backdoors and any other malicious codes. Security updates,server defending,IIS,apache,ftp,rdp,ssh,stealthy authentication. IDS/IPS,Network monitoring. Protection of websites and servers,cloud security. 24/7 Server Security Management IT support, solving user problems and troubleshooting.  less

    computer-networking network-security tcp-ip penetration-testing windows-administration adobe-photoshop microsoft-active-directory dns microsoft-hyper-v dhcp 00 more less
    • $10.00 HOURLY RATE
    • 5.0
    • 0 HOURS
    • BOSNIA AND HERZEGOVINA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 TESTS
  • System Admin

    I have been in the system administration and server management field for almost 10 years. Server management has been always my passion and I enjoy working in this area. I got loads of experience in key areas of server management … more

    I have been in the system administration and server management field for almost 10 years. Server management has been always my passion and I enjoy working in this area. I got loads of experience in key areas of server management. I got immense experience in server hardening and server security. I have designed, configured and secured more than 1500 servers up to date. I have experience in setting up datacenter. I rate my troubleshooting skills very high and have been very successful in finding out the cause of an issue and solving it. As I am very savvy on this, I can assure my experience will be a added advantage for you. My relevant skillset is quoted below. 1. Complete Management of Linux/Unix/Windows server. 2. Control panel knowledge (cPanel, Plesk, Helm, Directadmin, Ensim, Webmin, Virtualmin) 3. Virtualization technology (OpenVZ, Xen, SoluzVM, HyperVM, VMware ESXi, Xen Center, Microsoft HyperV, KVMs) 4. Server migration between various control panels 5. Mail server (Exim, Sendmail, Postfix, Qmail) 6. Cloud Server ( OnApp, Amazon EC2) 7. WebServers (Apache, IIS, Nginx, Lighttpd, LiteSpeed) 8. Operating Systems (RHEL, CentOS, Debian, Ubintu, OpenSuse, FreeBsd, Windows) 9. SSL Certificates (Symantec, Digital certs, Go daddy, Verizon) 10. Proficient in troubleshooting various desktop issues and applications 11. Good Knowledge in DRBD. Have setup more than 100 servers 12. Good knowledge in failover technology. Have used pacemaker/heartbeat for realizing failover clusters 13. Good knowledge in load balancers. Have used linux virtual server as the load balancer. Configured, LVS NAT, direct routing and Tunnelling. Knowledge on split-brain issues 14. Immense experience in server monitoring. Haves nagios, Zabbix. have developed more than 200 nagios plugins. Always take pro-active measures on alerts 15. VPN, PPTP,IPsec, SSH, SSL/TLS 16. FTP, SVN, CVS, GIT, Samba File Server 17. Content management system: OpentCart, Wordpress, OsCommerce, Ecommerce, Joomla 18. Networking: DHCP, DNS, Active Directory, OpenVPN, NFS, SAMBA, GFI, Squid Proxy realized with authentication, Firewalls (csf/apf/iptables), Clusters (active-passive/failover), Remote Installation (with KVM/IPMI), Network Address Translation, Network Information System 19. Backup: R1soft, CDP, rzync based backup, Rdiff, control panel backups 20. Server hardening of any kind of servers. Will provide complete report of what all security steps has been done on the server. Can setup weekly cronjob to get a server security report. Major Projects done 1. Design, harden and setup servers in a datacenter. The total number of servers setup is 600. 2. Implement monitoring for servers with nagios as the monitoring server. Number of servers added to nagios is1500. 3. Develop nagios plugins for a client. Number of plugins created is 75. 4. Migration of servers. Migrated 300 virtual machines from 5 physical nodes to two physical nodes. 5. Migration between control panels. have done more than 1000 migrations till date. 6. Mailbox Migration: Done exim mailbox migration in MailDir format. Number of email account migrated is approximately 10,000. 7. Load balancing setup for a client with LVS NAT. Effectively completed the project with one master server and 5 load balancer clients. The website hosted in this cluster has got almost 2 million hits a day. 8. Configured DRBD for online data sync with almost 50 resources configured. Have configured “Automatic split-brain recovery policies”. 9. Designed and Setup failover servers with DRBD-Pacemaker. The corosync cluster engine was used. Resource level fencing was used. The cluster got 10 servers. Five such clusters has been realized. 10. Configured centralized server management software Puppet on a group of 1200 servers. Updated various security softwares such as SSH, CSF firewall etc on all these group of servers at once using puppet. Languages known: Malayalam – Mother Tongue English – High Level - Speak, Read and Write  less

    linux-system-administration virtualization network-security clustering security network-administration 00 more less
    • $11.11 HOURLY RATE
    • 4.6
    • 1 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 4 TESTS
    ASSOCIATED WITH:
  • 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 and … 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
    • 6652 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 1 TEST
  • Legal and Business Servces; Customer and Administrative Services!

    I am looking for opportunities to use my experience, education and skills to enhance a company by offering administrative services, which includes: Typing, Word Processing, Transcription, Desktop Publishing and Document Preparation (Legal included), etc. I have owned and operated a … more

    I am looking for opportunities to use my experience, education and skills to enhance a company by offering administrative services, which includes: Typing, Word Processing, Transcription, Desktop Publishing and Document Preparation (Legal included), etc. I have owned and operated a small business offering administrative service i.e. Tax & Document Preparation, Desktop Publishing, Business Plan Development, Resume Writing, and Business Consulting services from 1997-2008. I hold a MBA in Business Administration.  less

    data-entry customer-service business-development paralegal transcription presentations creative-writing complaint-management content-writing network-security tax-preparation email-handling clerical-skills 00 more less
    • $25.00 HOURLY RATE
    • 4.4
    • 19 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 11 TESTS
  • Network Security Engineer (CCIE-Security)

    4+ years of experience in Networking, Firewalls, VPN & Web Security Network Security and R&S - Installation, administration and Troubleshooting Devices - Cisco Routers, Switches, Firewalls(ASA), Zone Based Firewalls(Router Firewalls) QOS Troubleshooting Dynamic Routing Protocols VPN - Setup and Troubleshooting - Malware … more

    4+ years of experience in Networking, Firewalls, VPN & Web Security Network Security and R&S - Installation, administration and Troubleshooting Devices - Cisco Routers, Switches, Firewalls(ASA), Zone Based Firewalls(Router Firewalls) QOS Troubleshooting Dynamic Routing Protocols VPN - Setup and Troubleshooting - Malware Removal - Restoring hacked websites - Network Maintenance/troubleshooting - Network security hardening - Wordpress Hardening/Migrations/Hosting/Optimizations - Website Monitoring & website security hardening  less

    cisco-routers firewalls network-administration computer-networking network-security network-planning cisco-ios dsl-troubleshooting security ipsec vpn ospf bgp 00 more less
    • $15.00 HOURLY RATE
    • 5.0
    • 46 HOURS
    • INDIA
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 8 TESTS
  • System Administrator, Web and System Programmer

    I believe in developing highly functional, robust and secure software applications using the latest bleeding edge technologies. I believe in engineering of quality softwares using the tools and techniques that the modern day technology leverages to us. I believe that … more

    I believe in developing highly functional, robust and secure software applications using the latest bleeding edge technologies. I believe in engineering of quality softwares using the tools and techniques that the modern day technology leverages to us. I believe that there is a necessity of developing top notch software applications since the economy of an organization is dependent on the computer applications they are using or letting their users to use. I've good experience in both programming and system administration. My programming skills include: - PHP core and Code Igniter Framework - Core Java and Grails - C, OpenGL - C#/Asp.net - Python - SQL (MySQL+MsSQL) My system administration skills include: - Linux & Windows server administration - Apache Server, Apache Tomcat, Jetty, TomEE, ActiveMQ, php-fpm, fastcgi, mod_fcgid - Plesk, CPanel, WHM - Nginx, Varnish, HAProxy - Bash scripting - SSL, OpenSSL, OpenVPN - Network management using linux gateway server, iptables, tc, snmp, etc. - tcpdump, tshark, wireshark, snort, nmap - Ossec, fail2ban - Computer security (System, Network & Web) and hacking - MySQL database administration and performance tuning - PaaS - Elastic Beanstalk, Heroku, Dotcloud, Openshift - ElasticSearch Cluster - Custom daemon/services installation - Logstash, Lumberjack, Syslogs - Source Code Review and Vulnerability Assessment (PHP, C#, Java, Grails) My release engineering experiences include: - engineering release model - git, svn - jenkins, hudson, cc, cc.net - ant, nant, gant, msbuild, maven, nar-maven-plugin - AWS deployment - Google App Engine, Google Cloud Storage, Google Cloud SQL, OpenShift - Docker.io, packer.io My interests include: - Algorithms & Complexities - Design Patterns - performance tuning - Profiling (esp. Java) - Networking - Computer security In my free times, I mostly play with debuggers such as GDB and OllyDebugger and keep on learning the art of reverse engineering in different systems. I believe in being able to work on any platform and thus, I seek for learning the core ideas and semantics rather than the syntax. Apart from these, I believe in keeping myself in sync with different technologies and platform and hence I keep on experimenting on different stuffs related to technology. This includes working on low level such as embedded programming to reading books on statistics, probabilities and discrete mathematics.  less

    php database-programming html javascript css codeigniter web-design systems-development socket-programming network-security html5 ajax psd-to-xhtml css3 c 00 more less
    • $35.00 HOURLY RATE
    • 5.0
    • 236 HOURS
    • NEPAL
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 6 TESTS
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