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Skills
Systems
- Server OS: Linux (RedHat / RHEL 4.* & 5.*, Debian Linux, Ubuntu Server), *BSD, IOS. Basics in Sun Solaris
- Client OS: Linux (Ubuntu Desktop, Debian Linux), Windows XP/Vista/7, *BSD, Mac OS X
- DB: MySQL, PostgreSQL
- Mail servers: Postfix, Qmail
- Backup: rsync, NetVault, Time Navigator
- Monitoring: Nagios, Cacti, MRTG
- Systems' security: Tripwire, sshd, iptables (firewall)
- Application servers: Apache, Bind, PowerDNS, inetd / xinetd
- Versioning: subversion (svn), CVS
- Microsoft: basic knowledge of Windows Server 2003 / 2008, SBS 2003, IIS, SQL Server, Exchange and Active Directory
Networking
- Network technologies: Ethernet (802.3*), WiFi (802.11a/b/g/n)
- Protocols: TCP/IP stack (IP, TCP, UDP, ICMP)
- Switching: 802.1q, VTP, CDP, STP (spanning tree)
- Routing: BGP, RIP, OSPF, IGRP/EIGRP, IS-IS
- Redundance and Load Balancing: VRRP, GLBP, F5 BigIp
- Virtual Private Networking: IPSec VPN, MPLS VPN, SSL VPN
- Protocols (at application level): DNS, HTTP / HTTPS, SMTP, POP, IMAP, SSH, Telnet
- ToIP: Asterisk, Callweaver, OpenSIPS (was: OpenSER), SIP and MGCP protocols, QoS management
- Cyphering: symetric (DES/3DES, Rijndael/AES, IDEA/PGP, Blowfish), asymetric (RSA) and hash (MD5, SHA-1)
- Virtualization: vSphere 4 (ESX / ESXi), vCenter 4, Xen, KVM, Virtual Box
Software Development
- Tags-structured languages: HTML/XHTML, XML, CSS, XSL/XSLT, YML
- Script languages: PHP (advanced level), Linux shell scripting (Bash). Basics in Python, Perl and Microsoft PowerShell
- Compiled languages: C, Java. Basics in Object Pascal (Delphi) and .NET (VB, C#)
