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Last updated: October 1, 2015

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Mykhaylo Dobrovolskyy

Mykhaylo Dobrovolskyy

Mykhaylo Dobrovolskyy

Netherlands - Tests: 7

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.

100% Job Success
$27.78 /hr
4,817 hours

Bogdan daniel S.

Bogdan daniel S.

VCP, MCSA, Exchange, Vmware, HyperV, Servers Expert Admin

Romania - Tests: 8 - Portfolio: 1

10+ years experience in Information Technology (IT) Major areas of expertise: VMware and Microsoft virtualization technologies. Designing and implementing fault-tolerant virtualization clusters SAN and NAS systems (iSCSI, FC) Windows 2003 / 2008 / 2012 Server * Active Directory * Microsoft ISA Server and TMG * Clustering * MS Windows XP/Vista/7/8 desktop/workstation operating systems * Centralized anitivirus systems WSUS * TCP/IP, Switching and Routing * Firewalls IBM, HP, Dell Servers * DNS, DHCP, Wins * Print Server * File Server * Network and Servers documentation * LAN hardware/software administration, design, installation and configuration * Print Server * LAMP Administration * Linux services : squid, postfix, dovecot, firewall, ldap, mysql, nagios, dhcp, bind etc Certifications: MCP - Microsoft Certified Professional MCSA - Microsoft Certified Systems Administrator VCP - Vmware Certified Professional VCP-510 * VCA-DCV - Vmware Certified Associate Data Center Virtualization.

Groups: Microsoft Certified Professionals

100% Job Success
$22.22 /hr
2,674 hours

Jeffrey Ong

Jeffrey Ong


Philippines - Tests: 5 - Portfolio: 4

8+ Years of Experience in System and Network Administration Operating system: Ubuntu, Debian,CentOS,Red Hat, Windows Server (2003,2008,2012), XP, Vista, Win7, OSX Server: AWS, EC2, S3, EBS, Digital Ocean, Rackspace, Hostgator, Godaddy, Active Directory, Samba4, VMware Vsphere, Xen Server, Apache,Tomcat, Nginx, Samba File Server, Free Radius, Openfiler, LTSP Server,ISPconfig, Zpanel, Cpanel, Plesk, Linux/Windows Terminal Server, DNS, Bind, MS Excange 2013, Zarafa, Resara, Postfix, Dovecot, Cloud Computing, High Availability. Security: IPsec, PPTP,SSH, SSL/TLS Untangle, ISA, Zentyal Hardware: Laptop, PC, Router, Switch, Printer, HP server, NAS, SAN Website Application: Wordpress, Magento Ecommerce, Woocommerce

100% Job Success
$22.22 /hr
1,871 hours

Andrei Volkov

Andrei Volkov Agency Contractor

Linux specialist (Sec/Opt/Dev, C/Perl/Python/PHP/BASH)

Belarus - Tests: 5 - Portfolio: 13

Important: ------------------- Enhanced shield of your Web application with mod_security! Should be always. It is task #1 after installation ANY web application! ------------------- About Me and more: ------------------- I have over 16 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, 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. 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. 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. ------------------- Often: ------------------- 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. ------------------- STOP Windows and U/K/buntu etc. TIPS WITHOUT PAYMENT: ------------------- 1. 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 - problems: plugin low quality (look on author: from where and who is) ~ 15% cases - problems: theme low quality (look on author: from where and who is) ~ 5% 0day of WP also you need disable all shell function in php and enable suphp/suexec modes. STOP Windows and U/K/buntu etc. TIPS WITHOUT PAYMENT: ------------------- 1. I am getting a lot questions about reliability and quality distributives/clones Ubuntu. Results on practice - Ubuntu clones - worst for server. It is truth. If you $buntu guy, I can't help you right now. I only can recommend Debian way for server. =============== 3. Nginx of course is good program. For small/middle vps. But in serious projects - apache. Nginx will be suitable for frontend. It is only practice. Always for all web application should be mod_security module. Firewall of level of web application on 7 level of OSI. Each web application/site should be under own user in environment of vps or on dedicated servers. =============== 4. By topic Wordpress. For optimisation services of OS , namely system IO(type of disks or partitions) and DB(type of engines of tables), need to use empty installation (default variants). Most problems of work WP contains in itself - customized plugins or themes. For analyze pages need begin with such services as =============== Sunday - day of rest. Or in emergency case - payment with double rate. best regards, Andrei / PS: With love from USSR. ;-)

Associated with: UPWORK.LINK

100% Job Success
$16.00 /hr
1,023 hours

Shaukat N. Agency Contractor

Odesk ❶ Consultant | Network/System Admin | Database | Cloud Computing

Pakistan - Tests: 17 - Portfolio: 8

To start with, my background, qualifications and work experience in networking, systems engineering and security appear to be well suited to your specific requirements. I hold a Masters Degree in computing with specialization in Network Security and Databases along with that I hold certifications ranging from "MCSE-MCITP" to "RHEL" and from "CCNA" to "Juniper". I am confident that I can make a significant contribution to your company, specifically by providing excellent technical services and support to your company and clients. My achievements range from setting up and installing top-notch network solutions for various companies as a consultant to providing support for WINDOWS, UNIX based hardware/ software solutions. Further my background includes over 5+ years of Systems and Network Administration activities across a number of Offline and Online Projects along with reputed organizations. I have had extensive VMware and VCenter administration experience migrating virtual machines using both Physical to Virtual (P2V) and Virtual to Virtual (V2) strategies. This included a project team that covered over 250 migrations over an 18 month period. I have also supported and managed a large high availability Citrix environment and a high availability Microsoft SQL server 2008 cluster. In previous positions I had significant exposure to Microsoft Active Directory and LDAP environments as well as some virtualization experience using VMware and Cisco hardware along with Linux Upfront. The Cisco virtualization included administration of the Nexus 1000V virtual switches.

Associated with: Destra Soft, CyberPak Technologies

98% Job Success
$20.00 /hr
4,236 hours

Ivan S.

Ivan S.

Network Specialist

Croatia - Tests: 6 - Portfolio: 1

I work for Cisco Gold Partner as Network Security Specialist and have 8 years of experience in networking. My primary focus is Network security where i do design, implementation and maintenance of security products. - CCNA - CCNP Security - Expert knowledge of network security - Expert knowledge of routing and switching Experience with Cisco routers, switches and security solutions: c800, c1800, c2800, c3800, c4500, c6500, c7600, c12000, c2960, c3560, c3750, ASA, PIX, SCE Experience with PaloAlto firewalls: PA- 200, PA-500, PA-2000, PA-3000, PA-4000, PA-5000 Experience with technologies: NAT, HSRP, VTP, STP, VLAN, RIP, IGRP, EIGRP, OSPF, BGP, MPLS, IPSec, VPN Other vendors: Fortinet, Sonicwall, Dell, Sophos UTM

$27.78 /hr
1,059 hours

Mushtaq Naik

Mushtaq Naik Agency Contractor

Microsoft Certified in System Admin| Server Handling| IIS| VPN|DNS|SVN

India - Tests: 10 - Portfolio: 1

To use my skills, experience and adaptability to obtain a systems administration where I am constantly challenged. My greatest strength is my ability to walk into a new environment and be functional immediately. I am quick to learn and adapt to new situations, configurations and technologies.

Groups: Microsoft Certified Professionals

Associated with: NaikIT

$25.00 /hr
3,133 hours

Ahmad Samir

Ahmad Samir Agency Contractor

Cpanel/WHM/Linux Administrator/Firewall/security/Centos/Ubuntu

Egypt - Tests: 7 - Portfolio: 9

I possess 5+ years of experience in Linux server administration including installing & upgrading Apache,php,mysql and various types of open-source software also compiling and upgrading & installing kernels patches. Also I've good knowledge in installing & configuring virtual server management software ( proxmox, openvz, Ganeti). Got my B.Sc. in computer engineering and operational research, with a graduation project grade “Excellent A+” in image processing. As well as, I have managed to successfully earn a software diploma in network security , web crawling and software engineering with grade “Very Good A-”. If I can provide you with any further information on my background and qualifications, please let me know. Please note that : I do not accept any jobs related to wine/gambling/adult/.

Associated with: EGY-TECH Agency

98% Job Success
$16.67 /hr
2,557 hours

Raido R.

Raido R.

Senior Infrastructure Engineer

United Kingdom - Tests: 10 - Portfolio: 1

10+ years in industry has tought me to be able to handle any infrastructure gear out there. Extensive hands-on experience with devices below. Backup: Avamar, VEEAM Firewalls: Cisco ASA, Juniper, Palo Alto Networks, Sonicwall, Sophos LAN: Cisco, Dell, HP Monitoring: Nagios, VEEAM One SAN: Brocade, Cisco Servers: Dell, HP, IBM SSL-VPN: Juniper SA Storage: HP (EVA, MSA, P2000, P6000), EMC (Clariion, VNX, VNX2), Open-E Virtualization: VMware (3.5 - 5.5) In addition good knowledge in Microsoft product range. Server 2000-2012, Exchange, Sharepoint, SQL etc.

94% Job Success
$40.00 /hr
2,974 hours

A. Darshana Samaraweera

A. Darshana Samaraweera

Expert Linux and Database Administrator

Sri Lanka - Tests: 9 - Portfolio: 6

My ultimate goal is customer satisfaction. Please contact me, if you need to get something done better. Os : Linux and Wondows server expert Cloud Services : AWS, Linode, ToggleBox Relational Database Servers : MySql, Oracle, PostgreSql, MsSql DB Languages : Pl/Sql,Stored Procedures, SSIS Scripting Languages : Bash, Perl, Java No Sql Database servers : MongoDB Atlassian: Jira Web servers: Apache, Nginx, Tomcat Mail Servers : Zimbra,Postfix,Sendmail,Hmail,Dovecot Monitoring: Nagios, Zabbix, Monit, Munin, Cacti Virtualization: Openvz, Vmware ESXi/server, VirtualBox CMS : Wordpress, Magento firewalls: iptables, ufw Other: standard network services (DNS, DHCP, FTP, SVN/Git, http proxy, VPN, backups, monitoring etc)

95% Job Success
$15.56 /hr
2,385 hours