Emil Stefanescu

Background

About Emil Stefanescu

Network Engineer- Routing (OSPF, BGP. MPLS)- Switching (VLAN, VTP, STP)- Security (iptables, acl)- VPN (IPsec,L2TPoIPSEC,GRE,GREoIPSEC,PPTP,tinc,MPLSVPN,EoMPLS)- QoS (Cisco,Linux HTB)- Management & Auditing Tools (SNMP, Cacti)- LAN / WAN / WLAN (Ethernet, 2.4Ghz, 3.5Ghz,5.8Ghz)- Network Cabling Systems (fiber optics, modules, copper, coax, Datacenter Design, Wiring Closets, Cable Wireframes, Estetic cabling)- VoIP Networks (MGCP, SIP) Systems Engineer- Linux (Slackware, Mandriva, SUSE, Gentoo, Debian, Ubuntu)- E-mail (postfix,courier-imap,courier-pop3,dovecot,qpopper,amavis,spamassassin)- Web (Apache,nginx)- FTP (proftpd)- freeradius, tac_plus)- Proxy (Squid)- VOIP (Asterisk)- Database (Mysql)- Monitor (Cacti,Munin,Nagios)- DHCP - DNS (BIND)- Wildfly cluster - automation with Chef, puppet Vmware - built and currently maintaining clustering vmware infrastructure vcenter 5.5, esxi 5.5, vsphere, SAN (DELL EQL) Amazon AWS - private cloud (through vpn) resources offloading to aws ec2 instances Hardware (installation, configuration, troubleshooting): Cisco, Linksys, Huawei, ZTE, CTS, HP, DELL, IBM, Alvarion, Zcommax,Z-Comm, 3COM, Allied Telesyn, Ubiquity Networks Other competences- Programming (BASH, PHP, Ruby, Python, MySQL) Designed and implemented metropolitan area network based on cisco and linux machines. Created web based/shell based interfaces for managing network equipments. Designed and implemented full authentification, authorization and accounting scheme based on radius,PAM, cisco etc including web based users/groups management system. Radio link planning and implementation for 2.4, 3.5 and 5.8Ghz frequencies. Configuration and administration of mission critical linux servers for companies with lots of services(mail server 400+ users, dns 60 query/seccond etc). Specialties: Security: