## BIO I have BSCS and 10+ years experience in Linux/Unix/FreeBSD servers administration. Have worked with wide range of software and protocols in areas that include: VoIP, ISP networking, web hosting, video streaming, Clustering, RDBMS etc. My primary field is redundant VoIP/Asterisk systems. I do consulting, solution design, implementation, support and troubleshooting. Goals are high work quality and customer satisfaction.
I available via email\Skype\SMS\Phone
Hourly rate: $40
## Areas of Expertise
**OS:**
* **Linux(all kinds)** Expert
* **BSD** Good
* **Unix** Good
**Programming:**
* **Perl** Expert
* **PHP** Expert
* **C/C++** Patching
* **JS** Average
* **Java** Average
* **ActionScript** Average
* **Shell** Average
* **HTML** Average
**Hardware:**
* **Routers** Fritz!Box, Cisco, DrayTec, Lancom, D-Link, Astaro
* **VoIP cards** Sangoma, Digium, Nortel, Dialogic
**Protocols:**
* **Physical layer** Ethernet, ISDN, T1/E1, 802.11
* **Low-level** ARP, IP, TCP, UDP, ICMP
* **VPN/Tunnelling** openvpn, GRE, IP-IP, L2TP, PPTP, IPSec
* **Routing** RIP, OSPF, EIGRP, BGP
* **VoIP** SIP, IAX, H323
* **Application level** DHCP, DNS, FTP, HTTP/HTTPS, RTMP, IMAP, NTP, NFS, POP3, SMB, SMTP, SNMP, SSH, TELNET, TFTP
**Software:**
* **Virtualization** Xen, Qemu/KVM, VirtualBox, OpenVZ
* **VoIP/FoIP** Asterisk, SER, GNUGK, oh.323, IAXmodem, HylaFAX
* **RDBMS** MySQL/MariaDB, PostgreSQL, Firebird
* **DNS** pdns, BIND, djbdns
* **FTP** ProFTPD, vsftpd, WU-FTPD
* **Mail** Qmail, Exim, Sendmail
* **AAA** Radius
* **WEB** Apache, nginx, lighttpd, thttpd
* **Streaming** FMS, Wowza
* **Firewalling** IPtables, IPchains, IPFW
* **Misc** Drupal, MediaWiki, GeoIP, Heartbeat, PVM, NFS, NTP, samba, Squid, sshd, Zebra, etc.
**Advanced Techniques:**
* **Virtualization**
* **Load-balancing, High perfomance & High-availability clustering (VoIP, LAMP, etc)**
*
* **Complex IVR and AGI scripting**
* **Asterisk modules and related software patching/writing**
* **RDBMS design**
* **Advanced routing, Traffic queuing and Firewalling**