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Rajashekar.R #127,6th Main, 2nd cross, S.K.Gardens, Bangalore – 560 046 India +91-080-3530949(Res) +919845133670 (Mobile) email@example.com www.techguruz.com Background Summary: I have four plus years of experience in information technology with a focus on Linux and Unix Administration, Messaging services, Shell scripting, open source integration and consulting. My skills include administration of IBM Aix 4.3, IBM AS400 and Solaris 8.0, administration of windows 2000/NT server and services DNS, DHCP, Winproxy. Design and implementation of Internet, intranet services like; mail, web, proxy, FTP, DNS File and print servers. Design and implement Firewall based on ipchains and IPFilter Framework, Linux System and Network System & Network Security Tools, Migration from Windows based Networks to Linux Networks, Unix Shell Programming Bash & K Shell, and Sybase Administration. Experienced in DATA Center 24x7 Support Operations, ITSM procedures and processes like Incident Management, Problem Management and Change Management. Technical Skills: Operating Systems • LINUX Linux 2.2, 2.4 Linux Distributions: Redhat Linux 6.0,6.2,7.0,7.2 ,8.0 & 9.0 Redhat Enterprise Linux 2.1, 3.0 Suse Linux Enterprise Server 7.0 • UNIX IBM AIX 4.3, SOLARIS 8.0 • WINDOWS Windows NT 4.0, Windows 2000 Professional. • Other IBM iSeries 800 (AS/400) Database Sybase 12.5, Mysql Programming Languages Bash & K Shell programming Network Services • Messaging Sendmail 8.12, Postfix 2.x, CYRUS IMAP 2.x, WU-IMAP, Qpopper, Suse Linux Email Server 3.1,InterScan Messaging Security Suite (IMSS). • Web Server Apache 1.3.x, 2.x • File/ Print Services Samba, NFS • DNS Server BIND 9.x • Proxy Server Squid. Rajashekar.R www.techguruz.com firstname.lastname@example.org 1 • FTP Servers WU-Ftpd, VSFtpd • Instant Messaging Jabber • Directory Services Openldap, Netscape iplanet • Network Security SSH Server, IDS, Packet filtering firewall router using IP Chains 1.2, IP Tables 1.2.3, RSA secure ID • Backup Utilities HP Omnibackup, Brightstor Arcserve, Unix Backup utilities tar, dump restore. • Versioning system CVS • Monitoring Tools NAGIOS Appliances Netcache, Juniper Netscreen SA 1000, 3000. Work History: Wipro, Bangalore (May’2004 – till date) Senior Customer Service Engineer (UNIX Specialist) – Server Escalations, Global NOC Re-organization of Wipro’s Perimeter messaging Setup. Responsible for the technical design and implementation of the Wipro perimeter messaging .The highlights of this project were a. Implemented on complete open source platform b. Redhat Enterprise Linux 2.1 as the Operating System, c. postfix-2.1.3 with TLS support as the MTA, d. IMSS (Inter Scan Messaging Security Suite) from Trend Micro systems for Virus Scanning and Spam filtering. e. Subscription to SPAMHAUS RBL lists. f. TLS enabled for encrypted and certificate authenticated SMTP transactions. g. Strict SPAM control Sustenance Activities – Unix and tools services L3 Support activities for Services listed below: a. Proxy Services – Squid, Netcache, and Netscreen Secure Access. b. Messaging Services – Postfix, sendmail on Linux, Solaris platform. c. Monitoring Tools – Nagios d. Implementation and evaluation of products for new requirements and improve current services. All activities are governed by ITSM procedures of Incident Management, Problem Management and Change Management. Significant Achievements Design and implementation of the perimeter messaging setup from sendmail on Solaris to Enterprise Linux, responsibilities included the technical - architecture design, feasibility study, implementation, project schedule, co-ordination between teams, complete project documentation and, technical – support operations training to the sustenance team. Rajashekar.R www.techguruz.com email@example.com 2 Phoenix Global Solutions (I) Pvt. Ltd., Bangalore (Jun’ 2002 – Apr’2004) Systems Administrator Open Source Integration for ITS Division. Migration of windows NT Fileservers to Samba on Linux. Migration of the Windows based DNS Servers to BIND9 on Linux. Implementation of Radius server on Linux, for user authentication for accessing Internet. Implementation PHP Based Discussion forum and web content management for managing the Intranet. Implementation of CVS Server using CVSNT and using wincvs client for software version control. Administration of IBM iSeries 800 for the ITS Division - client SWISSLIFE Responsibilities include system operator role, managing user account, object permission, backup and restore of data. IBM AIX and Sybase Administration for the ITS Division - client REGENCE Group Responsibilities include Administration of Sybase Database and the IBM Aix Server. UNIX and K- Shell scripting. Systems Administration – ITES (I.T Enabled Services Division) Infrastructure Management and reporting of Davox, Backup and Administration of SUN SOLARIS Servers, Administration of the windows DHCP, DNS, IIS Servers. Open Source Integration for ITES Division. Implementation of File Server – was responsible for architecting and implementing a file server, using samba on Linux, with zero cost on software and licensing. The file server has features of user and share security, DFS (Distributed File System). A script to automate backup and, log reporting through email. Use of Open Office on desktops, reducing the cost incurred on Microsoft office suite. Implementation of SSH Server, allowing support personnel to connect over the Internet to manage systems, securely. Intranet Mail Server, BBS (Bulletin Board System) for the ITES Division Responsible for implementation of Suse Linux Email Server 3.1. Activities included administration, management of the mail server, and backup of email. Significant Achievements Responsible for use of open source products, resulting in cost saving on Software & its licensing. Rajashekar.R www.techguruz.com firstname.lastname@example.org 3 Computer Factory (I) Ltd., Software Division, Bangalore (Nov’ 2000–Jun‘2002) Functional Manager – Corporate Intranet Services (Linux Consultancy) & Systems Administrator IT Division CF-Alert - Java based Alert Messaging System. An alert messaging system written in Java. The product used RMI of client server communication; Java Swings for the administration frontend and java mail API for the messaging. Typically used for security systems, IDS (Intrusion Detection Systems). The team size was 3. Migration to a Linux based Network – Eureka Forbes Ltd., Bommasandra, Bangalore – responsible for design and implementation of a domain controller (PDC), file server, print server, email server, Intranet Web Server, Http Proxy, Software RAID1 (Disk Mirroring) on Redhat Linux 7.2, replacing a Windows NT based PDC and Exchange server as the Mail Server, win proxy as the proxy server, saving lakhs of rupees on windows Software and its Licensing costs. Internet – Intranet Email Server, a Linux based router, firewall – TMG (Technology Media Group), Bangalore – responsible for the design and implementation of the Linux based Internet email server based on sendmail-8.9 with relay control, anti- spam measures, with pop access. This email server was used by all employees of TMG distributed in offices located across various parts of India. Secure Web Server, Internet Firewall and Intranet Mail – Ramsoft & Fusion Technologies Bangalore. – Responsible for the entire design and implementation of an intranet email server on Linux using sendmail, pop services, with Software RAID 1 enabled. Design and implementation of a secure web server using Apache and a Linux packet filtering firewall based on ipchains in Linux kernel 2.2 Migration to a Linux based Network & Internet Firewall – Spectra Innovations Inc Bangalore – responsible for migrating a windows based network, which comprised of a Windows NT server as PDC, Fileserver, MS Exchange server 2000, the same functionality was provided using samba, sendmail on Linux. Designed and implemented firewall-router NAT based on the Linux Kernel 2.4 IPnetfilter framework (iptables). Intranet services – Mail, Web and Fileserver – Thomas & Associates Bangalore – Implementation of a Email Server with mail monitoring enabled i.e., every mail sent or received are scanned for content and a copy placed for security purposes. Implementation of fileserver based on samba 2.2. Thomas & Associates are prominent Building Architects in Bangalore. Intranet Solutions on Linux for the following clients: 1. Interplex solutions, Bangalore 2. Enercon Systems Pvt Ltd., Bangalore 3. Spec Synergy, Bangalore 4. Computer Factory (I) Ltd. Hardware & Networking Division, Bangalore. 5. Varma & Varma Chartered Accountants, Bangalore. Rajashekar.R www.techguruz.com email@example.com 4 Significant Achievements Managed a successful Linux consultancy and services with a client base spread across various parts of Bangalore, India. Migrated windows based networks to Linux Network for corporate like Eureka Forbes Limited, Technology Media Group (TMG), Spectra Innovations Inc, saving lakhs of rupees in Windows Software and Licensing costs. Actively involved in fostering use of Open Source Products. Education: March 2000 Bachelor of Engineering in Electronics & Communications, Bangalore University. April 1995 Diploma in Electronics & Telecommunication Engineering, Bangalore Professional Training: • Java Programming - NIIT. • Linux and Postgresql - Computer Factory India Ltd (Software Division) • Linux Security & Administration - Computer Factory India Ltd (Software Division) • Solaris Security - Sun Microsystems • Sybase Administration – Phoenix Global Solutions (I) Pvt. Ltd. • CVS - Phoenix Global Solutions (I) Pvt. Ltd • AS/400 System Operator – Annoxent Solutions Pvt Ltd. Certifications: RHCE (Red Hat Certified Engineer) – Red Hat Linux 9 References Can be provided on request Rajashekar.R Rajashekar.R www.techguruz.com firstname.lastname@example.org 5
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