PRAVEEN KUMAR RAJASEKARAN

Firewall

• Expert in Sonicwall Nsa2650
• VLAN, VPN, Network HA, Content Filter, SSO , NAT, PAT, Site to Site VPN,

SMTP Server

• Expert n Open Source SMTP server and webmail
• Monitoring of SPF, DMARC, DKIM, Blacklisting,
• Handled Realtime mail migration of 500+ users without data loss

Security Testing

• Penetration Testing / CERT-IN / Security testing – performed web application and android application security testing using following tools
• Hands on with OWASP, BURPSUIT, NMAP

DataBase

• Hands On experience in Database – postgres, oracle , MSSQL
• User creation, database migration, DR, Report generation
• HA Configuration

WebServer

• IIS SERVER – Web hosting, web farming, FTP creation with ACL, error log analysing, FTP upload/download with timestamp monitoring, source destination request monitoring, Resource Monitoring, Logs Analyzing

Tools

• Open-source Tool implementation across origination – Bugzilla , Nagios core, Time tracker
• Hands on experience in Microsoft tools – NTP implementation, Active Directory over network, DNS, IIS,
• SFTP configuration with ACL using open SSH server
• Storage server – NAS pr4100 configured with Raid 5 with auto backup production data
• Hands on with Jenkins CI/CD configurations

Cloud Coumputing

• Hands on experience with AWS Instance configuration, VPC creation
• Hands on exprience with Docker containers

Others

• Internal lead auditor – ISMS/ISO 27001 and document owner
• Being owner of all production servers
• Analysed complex project server issues and worked on large enterprise and business-critical applications
• Performed network security design and integration duties
• Resolved issues and escalated problems with knowledgeable support and quality service
• Diagnosed and executed resolution for all network and server issues
• Enhanced availability of infrastructure through enterprise-wide planning, thorough testing, efficient implementation and comprehensive support
• Designed and evaluated WAN and LAN connectivity technologies
• Resolved conflicts and negotiated mutually beneficial agreements between parties
• Maintained excellent attendance record, consistently arriving to work on time
• Monitored computer virus reports to determine when to update virus protection systems
• Conducted security audits to identify vulnerabilities
• Recommend improvements in security systems and procedures
• Identified management control weaknesses and provided value added suggestions for remediation
• Prepared working papers, reports and supporting documentation for audit findings
• Completed audit papers by thoroughly documenting audit tests and findings
• Administered, supported and monitored databases by proactively resolving database issues and maintaining servers
• Managing skill’s
• Managing a team of 4 system administrator, 2 database administrator, 1 Data Center InCharge
• Motivating team to come up with new ideas/technology – reviewing SOP with backup plan
• Implementing same across organization with minimized downtime.
• Worked with cross-functional design teams to create software solutions that improved overall functionality and performance.
• Automated and implemented system backup and recovery procedures.
• Collaborated with team to analyze system solutions based on client requirements.
• Teamed with business analysts to deliver high-availability solutions for mission-critical applications.
• Tuned systems to boost performance.

• Oversaw network performance, making changes to boost overall efficiency and power
• Led team development and assisted in all project management coordination
• Provided firewall and VPN management, network security and incident response.