Umair Khan, System Administrator

Umair Khan

System Administrator

Arpatech

Lieu
Pakistan - Karachi
Éducation
Diplôme, Cisco Express Foundation for Field Engineers, CXFF (Certified)
Expérience
16 years, 8 Mois

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Expériences professionnelles

Total des années d'expérience :16 years, 8 Mois

System Administrator à Arpatech
  • Pakistan - Karachi
  • Je travaille ici depuis octobre 2011

• Install and Maintain VMWare ESX environments on Local/Remote DataCenters.
• ESX /VMServer Virtual Machines Backup, Maintenance using GhetoVCB.
• Installed Nagios to monitor diffrent services like java server, mysql health, vmware backup, iis service, apache server etc
• Write Custome Nagios script to monitor server errors, vmware backup status.
• Configured Mikrotik router port forwarding to local lan servers
• Write Mikrotik script to enable, disable rules and backup the configuration.
• Setup SugarCRM, JBoss, Tomcat, Joomla, PHP, Apache and MySQL bases servers.
• Responsible for deployment of new application release and patches related to application bug fixes.
• Configured Asterisk PBX with custom dial-plan and phpagi for call recording, daily call quota, custome cdr in mysql and Call Queue.
• Write OpenVPN script to create server configuration, iptables rules and client configuration.
• Setup ESVA Email Scanning Virtual Appliance.
• NFS Server and Rsync Setup for remote backups on multiple locations.
• VPN Server with LDAP and PAM auth.
• MySQL Master/Slave with SSL integration, MySQL Multi Mater Setup.
• Apache and MySQL Load Balancing through HA + Apache (through different mods) and MySQL tunings.
• Write Iptables rules to secure server for icmp flooding, port scanning, syn attacks.
• IRed Mail Mail Server Setup for multiple domains.
• Squid Proxy as Reverse Proxy for multi-domain management single SSL certificate.
• LDAP on SSL to communicate with different DMZs.
• Centralized LDAP Access policy implementation.
• Disaster Recovery and Backup policy implementation.
• Write Vmware PowerCli script for VM reporting and management.
• Setup Varnish with Nginx for Web Site load balancing and auto fail over.

Senior Network Engineer à Seven IT
  • Pakistan - Karachi
  • septembre 2007 à octobre 2011

• Deployed and administrating Asterisk VoIP server.
• Installation and configuration squid transparent proxy, active directory, samba server, internal Mail server, shorewall, nagios. Apache, Mysql server.
• Write script for daily local and production backup.
• Connect office PBX to Sydney office PBX via Quintum Gateway.
• Configure Asterisk Call recording, conferencing and Voicemail service.
• Configure Asterisk with quantum PSTN gateway.
• MySql setup, MySql Cluster and Replication Master to Master Slave for CRM databases.
• Install Active Directory for Authentication and backup’s critical date to remote drives via batch script.
• Configured Pfsence firewall for WAN load balancing.

Network Engineer à pixsense
  • Pakistan - Karachi
  • septembre 2007 à février 2010

• Manage and maintain a Microsoft Windows Server 2003 environment
• Implement wireless network for office laptops
• Install, configure, and administrate Microsoft Windows XP workstations
• Configure network IP addresses, proxies, and gateways
• Install Microsoft update server to update latest Microsoft product
• Monitor local backups troubleshoot problems associated with those events
• Install, configure and maintain antivirus solutions
• Design & implement VPN to connect different remote location
• Documentation of Infrastructure, Issues, Incidents and Solutions
• Install mysql with master & slave replication
• Install apache server with load balancing by using round robin technique
• Network cabling preparation and installation
• Complete Purchasing for office use & department
• Store & stock maintenance of IT Devices and accessories
• Troubleshoot and maintain computers and printers

Éducation

Diplôme, Cisco Express Foundation for Field Engineers, CXFF (Certified)
  • à Cisco
  • novembre 2010

Cisco ID CSCO11234540

Diplôme, Cisco Certified Network Associate, CCNA (Certified)
  • à Cisco
  • août 2010

Cisco ID CSCO11234540

Diplôme, Red Hat Certified Engineer, RHCE (Training)
  • à On wire Education
  • juin 2005
Diplôme, Microsoft Certificate (MCSE)
  • à Computer Training & Testing Centre (CTTC):
  • février 2005
Baccalauréat, B.S.C
  • à Ship-owner Govt. College Karachi
  • mai 2004

Specialties & Skills

Linux Database
Linux Server
VMware ESX
Red Hat Linux
VMware Infrastructure
Windows server, active Windows server, Linux server, Cisco router and switches.
Apache, Mysql, Postfix, Sendmail, Bind, Squid, Dhcpd, Iptables, Shorewall, Mikrotik, VMWare ESX
Asterisk, Asterisk phpagi scripting and diaplan programing, FreeSwitch, Vicidial
Haproxy, Varnish,Nginx,Mysql Master-Slave, Openfiler , Bash Scripting,
Cisco Router, Cisco Call Manger, Cisco Switch

Langues

Urdu
Débutant
Anglais
Moyen

Formation et Diplômes

Red Hat Certified Engineer (Certificat)
Date de la formation:
January 2005
Valide jusqu'à:
February 2005
Cisco Certified Network Associate (Certificat)
Date de la formation:
January 2005
Valide jusqu'à:
February 2005
Cisco Express Foundation Field Engineer (Certificat)
Date de la formation:
January 2005
Valide jusqu'à:
February 2005