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  1. Kundan S.

    Kundan S.

    System/Network Engineer

    Nepal - Last active: 10 days ago - Tests: 4 - Portfolio: 1

    I have been doing the system/network administration for last 6 years. My core area of work involves setup, maintain and troubleshoot system and network administration. I had successfully implemented and troubleshoot various system and network administration. My work platform includes (but not limited to ) Microsoft, Cisco, VMware, Citrix, Linux, IBM, SAN, Veritas etc. Below are the services which i have been providing to the organizations Microsoft platform : Active directory on w2k/w2k3/w2k8. IIS 6/7 web server/application server/file server/ smtp component for relaying. Certificate services as PKI in w2k/w2k3/s2k8. Visual SVN as subversioning and repository. Exchange 2003/2007/2010 and MDaemon for messaging solutions. WSUS, RDS, Terminal Services, Hyper-V DNS, DHCP, RRAS, Network Policy services. IPSec services PPTP and L2TP VPN Server. Kernel Debugging with Microsoft Debugger and kd tools SQL server 2008 Database administration. VBscripting for standalone and Active Directory environment. Linux services: LDAP with and without samba server. Qmail, postfix, Exim and sendmail as message transfer agent. Dovecot and courier as IMAP and POP3 server. smtp-auth, spamassasin, SPF with linux MTAs. Apache as webserver, apache and git as version control server . ssh server with and without password (with certificates and passphrase). VNC , screen as terminal services. oracle, mysql and postgresql on linux/unix. IPsec site to site and ssl vpn using freeswan, openswan and racoon. linux as firewall gateway using bash/perl gateway along with iptables, psad, and snort. bandwidth shaping policing services using htb and tcng. Voice server based on sip with h.323 support based on asterisk (trixbox, elastix, go-autodial ) with vicidial. quagga/zebra as advanced routing solutions. squid 2/3 cpanel/whm Amanda/zamanda/Bakula/rsync for backup services TCP Wrappers for hardening linux security. ext3/ext4/JFS on linux. puppet as configuration management. clonezilla. Debugging linux problems with signal trapping using bash scripts Networking : OSPF,EIGRP,RIP,BGP routing on cisco, juniper and open source in linux. Acess lists on cisco routers and security appliances (pix/asa). static and Dynamic NAT on cisco, juniper and open source linux/unix. L3 routing in cisco switches. SCCP/SIP in cisco CME, and call manager. INter vlan routing, site to site vpn, PPP/HDLC wan protocols, route summarization, equal/non equal cost load balancing. server virtualization on openvz, proxmox VE, KVM, XEN, citrix, vmware etc. desktop virtualization using citrix xendesktop and vmware view. App virtualization using citrix xenapp and vmware thinapp. user virtualization using citrix profile unity and appsense environment manager. ISCSI and Fiber channel based storage. IBM infosphere guardium for database security and data compliance CA identity minder and site minder. ...

    $11.11 /hr
    27 hours
    0.00
  2. MD EASIN

    MD EASIN

    Linux System Administrator

    Bangladesh - Last active: 7 days ago - Tests: 5 - Portfolio: 3

    I specialize in Linux Server Administration (WHM / DirectAdmin / Virtualization / RAID LVMs) Automation / OMNEON / Octopus / Exchange / FTP / HTTP / QMAIL / PROXY /NTP / VPNs(PPTP) /SAMBA /XEN-Server /pfSense / Mikrotik Servers. Terms of Services) • 99 Day Error Free Gaurantee Service • 100% Customer Satisfaction • Guaranteed Refund if not satisfied • Good communication availability 24/7

    $10.00 /hr
    0 hours
    0.00
  3. Konstantin K.

    Konstantin K.

    IT Pro

    Russia - Last active: 12/03/2014 - Tests: 3 - Portfolio: 12

    Programming languages: - Perl (Linux/Windows) - PHP - JavaScript (NodeJS, jQuery, AngularJS, Qooxdoo, MooTools etc.) - SQL (PostgreSQL,MySQL, DB2, etc...) - ASP (VBS) - Delphi (Lazarus, Kylix) - Visual Basic - Python - HTML5/CSS3 - C/C++/C# (Linux/Windows) Os's (Administration): FreeBSD, Linux (Debian, Suse, CentOS etc.). - 8 years: Mail: postfix, cyrus, spam-assassin, amavisd-new, squirrel-mail, round-cube ... Web: Apache, Nginx, Perl, Php, HTML5, Javascript ... Other: Squid,VPN(mpd,openvpn, ipsec), bind,DHCP, NAT, CARP, Zabbix, nagios, monitis, clusters, ftp ... Firewalls/Filters/Monitors: ipfw, pf, Snort DBMS/DB: MySQL, Postgres, FireBird, DB2, SQLite ...

    $22.22 /hr
    10 hours
    0.00
  4. Reynold PJ

    Reynold PJ

    Senior Linux Server Administrator

    India - Last active: 08/20/2014 - Tests: 4

    I am working as a Senior Linux Server Administrator and have more than 4 years of experience in Webhosting industry. I have got the following certifications in hand currently, 1) Parallels Certified Virtualization Professional - Parallels Virtuozzo Containers for Linux 2) Parallels Certified Automation Professional - Parallels Operations Automation (PCAP POA) 3) Parallels Certified Automation Professional - Parallels Plesk Panel for Linux (PCAP PPP Linux) 4) Cpanel Certified 5) CCNA I love working in Linux (both debian and redhat based ) and my career goal is to become a Linux System Architect. More details about my work experience and client recommendations is available at my linkedIn profile, http://www.linkedin.com/pub/reynold-p-j/17/10a/2a

    $22.22 /hr
    0 hours
    0.00
  5. Mehedi Hasan

    Mehedi Hasan

    Mr. Mehedi Hassan

    Bangladesh - Last active: 09/30/2013 - Tests: 3 - Portfolio: 5

    I am Mr. Mehedi Hassan as a System Engineer and Network Administrator like to introduce here as a freelancer contractor. I have bachelor degree in Computer science and Master degree in MBA.I am having 8 years working experience in this IT field. I am an expert on Windows((2003,2008)) server system. I am also expert on Linux(centos, Debian) server system. I am also expert on Cisco and Mikrotik Router System. I am also expert on website server hosting in both windows(IIS7) and linux(Apache) System. I am also expert on VMware. I am also expert on anykind of Research and data analyst work. So Please if anyone want to do work with low price please communicate with me. Thanks' Mehedi Hassan

    $5.56 /hr
    0 hours
    0.00
  6. Kamal Desoky

    Kamal Desoky

    Linux system administrator

    Egypt - Last active: 11/17/2014 - Tests: 3

    I have been working as a Linux Server Administrator with many servers,doing administration of Linux systems,designing and structuring servers,vps and related issues. I have a relatively previous experience on: -Linux System & Network Administration. -Performing installations and operations of Linux distributions. -Configuring and implementing Web servers (APACHE) and virtual hosting. -Network and web security such as: Vulnerability Assessments, Hardening servers, Penetration testing, web security, fail2ban, SNORT, Tripwire-AID, mod_security, mod_evasive, Denial of Services (DDOS), Firewalls (iptables). -CMS (Joomla) installation, configuration, administration and mysql database related. -Deploying and maintaining Monitoring systems such as: nagios -MySQL database administration. -Resolve hardware and software-related problems, as well as perform system backup and recovery. -Good ability of Installing and configuring Virtualization Xen, OpenVZ. -Ability to compile linux packages from source code. -Bash scripting.

    $30.00 /hr
    0 hours
    0.00
  7. Anees T

    Anees T Agency Contractor

    8 Year Experienced Remote Server Administrator

    India - Last active: 09/30/2014 - Portfolio: 1

    I work as a Freelance Security Vulnerability Analyst and Linux/Windows Server Administrator for the past 8 years. My previous contract was with a well-known and Top 10 ranked datacenter with over 10,000 servers. I'm currently seeking similar but challenging opportunities from datacenters/webhosting companies and can join as early as possible. I'm comfortable for providing support via email, live chat, ticket/helpdesk interfaces, AIM, ICQ, etc., by working with a team or just being part of a team. I can create interfaces, programs, clients, servers, and various scripts to add features, fix issues, create solutions and automate tasks, or just make tasks easier via a controlled and secured environment. I can install any third party softwares and scripts. The key strengths that I possess for success in this position include: Server Auditing Tweaking and Optimizing Apache for better performance. Hardening PHP and Apache Mysql renice for good performance Scan servers for any Rootkits, Virus, Iframes etc Installation and configuration of PHP and Perl on the server. Installation and configuration of Mod_sec, Mod_evasive, Libsafe, logcheck, logwatch Check for bad disk blocks in all partitions using SMARTD Check server load and partitions to perform maintenance activities Prevent the execution of spamming scripts WHM Tweaking If your server is a target of DDOS attacks or Spam attacks (inbound and outbound) or Brute force attacks, and don't know how to tackle them, then I'm the guy you are looking for. These type of attacks mentioned above can easily cause the server load to rise to such an extend that it goes down. In general, a server once online remains online until there occur a network or hardware failure, or till the sys admin restarts it. If you find yourself submitting reboot tickets with the NOC every other day, then maybe you should harden the server. Here are the things I could help you with: Installation, configuration and fine tuning of APF, BFD and CSF Install and configure PRM to check load spikes and kill unwanted processes automatically Configure exim to trace spammers on your server Create and install shell scripts that automatically delete unwanted mails from the mail queue every hour Configure exim to reject mails from IPs that are listed in common RBLs. This could reduce a lot of incoming spam issues on the server Install and configure Apache modules like mod_security, mod_throttle, mod_bandwidth and many more (whichever required) to stop Cross scripting attacks and Remote file inclusion attacks Fine tuning of FTP and DNS servers My unique features: 24 / 7 availability Flexible timing Handle all types of Issues ranging from Level I to Level III Installing and configure new servers Installation of third party software and scripts Control Panel Installation Php or Apache Recompilation Tweaking of Mysql or Apache servers Server Restoration or Migration Kernel Up-gradation Firewall Installation and configuration Security Server Hardening I would be pleased to help you out with your server related issues. If you have any ticketing system and would like me to support your clients, please let me know. Hope to hear from you soon

    Associated with: ServerAdminz Support Solutions

    $22.22 /hr
    0 hours
    0.00
  8. Khizer N.

    Khizer N.

    Linux Systems Engineer

    United Arab Emirates - Last active: 11/15/2013 - Tests: 1

    Red Hat certified Linux systems engineer looking for challenging job opportunities. Areas of expertise include Linux administration, Shell scripting, Virtualization, Email servers, Web servers, Storage, Security and Backup solutions.

    $10.00 /hr
    0 hours
    0.00