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$50 USD / hour
Flag of BRAZIL
joinville, brazil
$50 USD / hour
It's currently 4:28 AM here
Joined July 25, 2015
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Volnei K.

@volneikroeger

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$50 USD / hour
Flag of BRAZIL
joinville, brazil
$50 USD / hour
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Systems, security and network administrator

I’m a professional with more than 12 years of experience and have been working with infrastructure as a network administrator and security analyst. I have also worked as a team leader, and am a certified technician in Cisco networks, Linux, Oracle and Microsoft technologies. Work with storage systems, Microsoft and Linux clusters, High Availability systems in general, Sun/Oracle SPARC, VMware, Hyper-v, Oracle VM and so on. Have experience with Checkpoint gateways and related security blades, Fortinet firewalls, Fortinet WAF, Sophos UTM, multi brands endpoint protection. I also work with open source security solutions such as PFSense, iptables, snort, squid, mod_security and chroot. Manage web services, DNSs, e-mail systems, proxys, routers and switches, network firewalls, web application firewalls, IPS and endpoint protection.

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Experience

Senior System/Security Administrator

by Seven - www.byseven.com.br
May 2014 - Present
BySeven is a company that works with IT outsourcing, providing services to medium and large size companies.  Deliver infrastructure projects over virtualization, networks, security, Microsoft, Linux and Solaris technologies.  Perform analysis and troubleshooting on network, Linux and firewall systems, and write action plans for quick responses in security incidents.  Write security assessments, implement firewalls, guarantee security compliances and hardening of Linux systems.

Senior System/Network Administrator

Lojas Salfer
Jul 2008 - May 2014 (5 years, 10 months)
Salfer is part of a retail company group with about 1.000 stores in Brazil and among the 3 biggest retail companies in Brazil (called “Máquina de Vendas”).  Maintained Linux servers to attend 220+ stores, including webservers, proxies, fileservers, file replications, FTP’s and diskless services.  Managed about 450+ networks interconnected through MPLS and IPSEC vpn using dynamic routing protocols as BGP and OSPF on Cisco devices.

Qualifications

CEH - Certified Ethical Hacker

EC-COUNCIL
2018

Oracle Linux Implementation

Oracle
2015
Oracle Linux 6.0 implementation specialist.

Oracle VM Administration

Oracle
2016
Oracle virtualization environment administration.

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