Cryptography Freelancers

Showing 14 freelancers

Cryptography Freelancers

Showing 14 freelancers

  • Linux Admin and Devel (Security/Backup/C/Bash/Perl/Python/etc)

    I have over 14 years of work experience with Linux systems. This is the list of software and technologies with which I deal. This list is not full and expands day by day. I always can find right decisions if … more

    I have over 14 years of work experience with Linux systems. This is the list of software and technologies with which I deal. This list is not full and expands day by day. I always can find right decisions if I found some problems. And I am always interested in looking for mostly economical and productive solutions. ( Of course, of course )) - Cpanel, WHM, Webmin, Plesk .... I know how are working these web-wrappers and I support their. I can will tune and to make the checking of these wrappers. But that more important !! I can work without this))) Directly use configuration files of services and etc etc. As usually it is better way on dedicated servers. ) TCP, IPv4 , IPv6, IPX ... - WiFi, WEP, WPA, WPA2 ... - SElinux, Apparmor, Smack, Tomoyo ... - LAMP ( Apache, Nginx, PHP, Perl, Mysql, Mongo), REDMINE ... - Cpanel, Zpanel, ISP ... - MySQL clustering and replication DNS servers ... - SENDMAIL, EXIM, POSTFIX (POSTFIXADMIN,MYSQL,DOVECOT,POLICYD) ... - HPC system: Torque, Maui, Moab for HPC clusters, Infiniband, FC interconnect, iSCSI, SCST, DRBD, OFED, OPENMPI ... - OpenLDAP ... - VPN with OpenVPN, PPTP, StrongVPN ... - Nagios, Zabbix, Ganglia, OSSEC ... - SVN, CVS, GIT ... - KVM, Xen, OpenStack, Proxmox ... - NBD, RAID, LVM ... etc etc During these years I have been in a large number of tasks related to administration of network devices, as well as with simple and complex server systems. I manage servers for the HPC tasks and for network infrastructure of Internet and Intranet - DNS,DHCP,*FTP,HTTP(S),MAIL etc etc. The main goals - the monitoring of the performance and the security. I also implement tasks of data backup and troubleshooting, support for the users. I have comprehensive work skills with systems based on Debian Redhat, CentOS, SLES, OpenSuse + Windows 2003/2008. I've got more than 8 years of experience in developing the different software with use of C, Perl, Python, Bash, HTML on system and user levels. For example, very important skill in developing and the modification of RPM packages (rpmbuild, rebuild, kernels), custom kernels and etc etc. How the standart service for VPS's and VDS's projects and dedicated servers: IDS, IPS, the control of contents of log's files, the control of load of the cpu, the memory, the hard disks; the backups of the databases and the files; install or update software, consultations. Emergency call via sms to cell phone. TIPS WITHOUT PAYMENT: =============== VERY OFFTEN: IF YOURS WP WAS HACKED 1. disable plugins 2. execute # diff -r dir1 dir2 3. repeat for plugins if you have last version of WP code: - 80% cases - problem in 'indian' plugin ))) - 15% cases - problem in 'indian' theme ))) - 5% 0day of WP also you need disable all shell function in php and enable suphp. =============== Good Luck on odesk.by  less

    unix-system-administration unix-shell redhat-administration linux-system-administration bash nginx lamp-administration centos email-technical-support opensuse cryptography operating-systems-development perl apache-administration firewalls c administrative-support translation russian raid-administration redmine perl-catalyst 00 more less
    • $14.00 HOURLY RATE
    • 5.0
    • 381 HOURS
    • BELARUS
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 5 TESTS
    ASSOCIATED WITH:
  • Web Development & Algorithm Design

    Over the last 3 years, I've been developing web applications, mostly using HTML5-related technologies. I'm pretty experienced with jQuery and HTML canvas, have some expertise in WebSockets. I'm good with object-oriented and functional programming, my language of … more

    Over the last 3 years, I've been developing web applications, mostly using HTML5-related technologies. I'm pretty experienced with jQuery and HTML canvas, have some expertise in WebSockets. I'm good with object-oriented and functional programming, my language of choice is Python. I also have experience in cryptography and developing efficient algorithms. One of the proofs of my expertise in algorithms is a Bronze medal from the International Olympiad in Informatics 2012. When required, I may also set up Linux servers. My distro of choice is Arch Linux, though I have some hands-on experience with Debain too.  less

    python algorithms javascript html5 html cryptography linux-system-administration 00 more less
    • $11.11 HOURLY RATE
    • 4.6
    • 0 HOURS
    • LATVIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 4 TESTS
  • Cybernetic and Computational System Engineering

    For the past five years, I have been learning about the information security world, working as an CEH (Certified Ethical Hacker). With some of my co-workers, i have participated in a lot of projects, strictly focused on Information Security. Also … more

    For the past five years, I have been learning about the information security world, working as an CEH (Certified Ethical Hacker). With some of my co-workers, i have participated in a lot of projects, strictly focused on Information Security. Also, as we evolve and grow in this area, we have trained ourselves in Forensics Sciences, attending clients who need to know what happened after a contingency. I consider myself a self-taught person that likes to grow and that is not afraid of challenges or difficult cases. At this moment my priority is to teach and so much to share the little knowledge I have gained over the years, as well as learn from those who have traveled a different path and with this keep on growing.  less

    penetration-testing network-security network-administration linux-system-administration cisco-routers mysql mac-os-app-development cryptography 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 0 HOURS
    • MEXICO
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 TESTS
  • Pro Delphi software engineer with mathematics and assembler for speed

    My slogan: "careful understand a task, and make effective code". I'm working with *Delphi *SQL(prefer MySQL) *Mathematics/Algorithms, *Cryptography *Assembler for bottle-necks if needed In some case I can create fast bash- or perl- scripts for Linux OS … more

    My slogan: "careful understand a task, and make effective code". I'm working with *Delphi *SQL(prefer MySQL) *Mathematics/Algorithms, *Cryptography *Assembler for bottle-necks if needed In some case I can create fast bash- or perl- scripts for Linux OS to automate routines.  less

    delphi database-programming linux-system-administration bash cryptography teaching-mathematics x86-assembler perl translation-english-russian php 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 0 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 TESTS
  • Software developer- .Net, SQL Server, ASP.net, JavaScript, C#

    I am highly motivated software developer. Both my experience and ongoing interest in programming made me an outstanding professional. GOALS: provide high quality and 100% accurate service to my employer.

    c# cryptography microsoft-visual-basic sql c++ network-security html css javascript asp.net ado.net microsoft-sql-server-development 00 more less
    • $15.00 HOURLY RATE
    • 5.0
    • 363 HOURS
    • ARMENIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 2 TESTS
  • Software Engineer

    Statisticians, Mathematicians and Programmers, who are masters or Phd students studying in Mathematics and Computer Science. We can help you solve many advanced problems in Mathematics, Statistics, and Programming with C++, C#, Java, Visual Basic, Fortran, Matlab, Mathematica, Maple, R, SPSS, STATA, STATISTICA, Eviews, Minitab, etc.

    algorithms c c++ cryptography electrical-engineering engineering-drawing geometry gps-development java teaching-mathematics pcb-design robotics scientific-writing software-testing structural-engineering game-design game-development unity-3d adobe-flash 00 more less
    • $33.33 HOURLY RATE
    • 4.7
    • 0 HOURS
    • INDONESIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 0 TESTS
  • C#/ASP.NET, MVC, CQRS,NServiceBus, NHibernate, AppFabric, SaaS, MS-SQL

    Developers think Functionality But less about Scalability. I'm able to help your team in both areas. I'm specially interested in long-term relationships. … more

    Developers think Functionality But less about Scalability. I'm able to help your team in both areas. I'm specially interested in long-term relationships.  less

    asp.net c# sql ajax uml soap oracle-pl/sql crystal-reports mysql microsoft-visual-basic java performance-tuning cryptography telerik wcf devexpress linq asp.net-mvc jquery xslt multithreaded-programming 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 6397 HOURS
    • MOLDOVA
    • LAST ACTIVE
    • 10 PORTFOLIO ITEMS
    • 5 TESTS
  • Web Developer, Web Security, Linux Admin

    + Currently, I am not interested in job offers + /* Dear reader, I'm Juan Escobar. Since 2009 I've been have working with Linux Servers, PHP, Zend Framework, Yii Framework, HTML, MYSQL, Security (OWASP). Some years ago I started with security … more

    + Currently, I am not interested in job offers + /* Dear reader, I'm Juan Escobar. Since 2009 I've been have working with Linux Servers, PHP, Zend Framework, Yii Framework, HTML, MYSQL, Security (OWASP). Some years ago I started with security/programming challenges, currently I'm in Colombia's top 10 in wechall.net (A website that consolidates user scores in the security/programming challenges most recognized in the world): http://www.wechall.net/country_ranking/player/juanescobar#rank_4 In 2011 I registered Compubun Company. Since then I've developed ​​web application for the government sector and private companies using technologies as PHP, HTML, CSS, JQuery and Frameworks. This work has made ​​me gain experience in management projects and administrative tasks. Finally, I want to say that I am a person who cares about the little details, I'm very obsessed with quality as you can see in the latest work from my portfolio. */  less

    security php zend-framework yii-framework linux-system-administration cryptography mysql database-design database-programming ftp data-backup centos ubuntu apache-administration html wordpress cpanel whmcs whm domain-migration firefox-plugin-development python django-framework jquery github node.js couchdb website-wireframing ajax 00 more less
    • $15.00 HOURLY RATE
    • 4.3
    • 342 HOURS
    • COLOMBIA
    • LAST ACTIVE
    • 13 PORTFOLIO ITEMS
    • 7 TESTS
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