Alexey N. Kovyrin

Company: Okhei Ltd. (Switzerland/USA)
Project Dates: October 2005 - Present
Status: in progress
URL: http://www.croesuslink.com/
Technologies/Software:

• IPVS (hosting cluster: HTTP requests balancing),
• Linux VServer (jailed web hosting - virtual dedicated servers),
• Heartbeat (hosting cluster: ipvs frontend failover) ,
• Apache (hosting cluster and web-based management console),
• MaraDNS (DNS with Self-written MySQL interoperation module for effective user domains parking),
• MySQL 4.1 (users database, domains database, request logs),
• Perl (DBI, CGI, system management automation, web-based management console, mod_perl for stat counters),
• Pure-Ftpd (ftp access to virtual-hosts with disk quotas),
• OpenSSH (ssh access to virtual-hosts),
• Nagios (cluster monitoring)

Roles:

• Unix System Administration,
• Server Software and Scalable System Design,
• Programming,
• Software Testing

Company: Okhei Ltd. (Switzerland/USA)
Project Dates: March 2005 - July 2005
Status: released
URL: http://www.servik.com/
Technologies/Software:

• IPVS (hosting cluster: HTTP requests balancing),
• Heartbeat (hosting cluster: ipvs frontend failover) ,
• ha_nfs + drbd (nfs-shared storage for hosting cluster nodes),
• Apache (hosting cluster and web-based management console),
• PowerDNS (DNS with MySQL backend for effective user domains parking),
• MySQL 4.1 (users database, domains database),
• Perl (DBI, CGI, system management automation, mod_perl for banner rotation system, hosting limits realisation and visit counters),
• ProFTPd (ftp access to virtual-hosts),
• Nagios (cluster monitoring)

Roles:

• Unix System Administration,
• Server Software and Scalable System Design,
• Programming,
• Software Testing

Company: Okhei Ltd. (Switzerland/USA)
Project Dates: November 2004 - February 2005
Status: released
Technologies/Software:

• Asterisk (Accounting and PSTN-termination),
• SER (User Registration, Authorithation and Call Routing),
• rtpproxy (NAT-traversal solution for SER)
• MySQL (Storage for all services)
• Perl (AGI-modules for Asterisk and CGI-script for Site and Control Panel)

Roles:

• Unix System Administration,
• Server Software and Scalable System Design,
• Programming,
• Software Testing

Company: ISP “Fuji-Line” (Komsomolsk, Ukraine)
Project Dates: October 2004 - December 2004
Status: released
Technologies/Software:

• Asterisk (Call Routing and Accounting),
• SER (User Registration and Authorithation),
• Perl (AGI-modules for Asterisk)

Roles:

• Unix System Administration,
• Software Design,
• Programming,
• Software Testing

Company: Okhei Ltd. (Switzerland/USA)
Project Dates: October 2004 - March 2005
Status: released
URL: https://secure.croesusonline.com/
Technologies/Software:

• Apache (Control Panels, Registration Pages, etc),
• mod_ssl (with Thawte Inc. certificates),
• MySQL (users database, credit cards database, miscellaneous logs),
• Perl (SOAP, DBI, CGI, recurring operations, web-based console, credit card bank terminal interoperation)

Roles:

• Unix System Setup and Administration,
• System and Software Design,
• Programming,
• Software Testing

Company: ISP “Fuji-Line” (Komsomolsk, Ukraine)
Project Dates: May 2004 - October 2004
Status: done
Technologies/Software:

• Routing (Static, OSPF with Zebra)
• Switching (STP with Linux and Smart Switches)
• VoIP (per-user dedicated SIP-phone numbers inside town network with prepaid calling card system for international calls)
• OpenRadius (RADIUS server for VoIP calls and VPN accounting and authorisation),
• PoPToP (PPTP tunneling),
• VTUN and iptunnel (unix-unix tunnelling),
• MySQL (users database, session statistics),
• Perl (DBI, rsh, telnet),
• FreeBSD Firewall (shaping/traffic accounting),
• Apache (Web-Based management interface and user control panel)

Roles:

• Network Design,
• Unix System Administration,
• Software Design,
• Programming,
• Software Testing,
• Promotion

Company: ISP “Fuji-Line” (Komsomolsk, Ukraine)
Project Dates: February 2004 - March 2004
Status: done
Technologies/Software:

• Linux Server (Debian)
• Postfix (MTA with MySQL support),
• Courier (POP and IMAP Services),
• ClamAV+Amavis-new (Antivirus checks),
• SpamAssassin (Antispam checks),
• Apache (WebMail/WAPMail System and Web-Based Management Console),

Roles:

• Network Design,
• Unix System Administration,
• Software Testing

Company: ISP “Fuji-Line” (Komsomolsk, Ukraine)
Project Dates: December 2003 - March 2004
Status: done
Technologies/Software:

• OpenRadius (RADIUS server for accounting and authorisation),
• MySQL (users database, session statistics),
• Perl (DBI, rsh, telnet),
• FreeBSD Firewall (shaping/traffic accounting),
• Apache (Web-Based management interface and user control panel)

Roles:

• Network Design,
• Unix System Administration,
• Software Design,
• Programming,
• Software Testing

Company: ISP “Fuji-Line” (Komsomolsk, Ukraine)
Project Dates: December 2003 - May 2004
Status: done
Technologies/Software:

• Routing (Static, BGPv4, Linux Advanced Routing and Traffic Prioritisation),
• Switching (STP with Linux and Smart Switches),
• WAN (PPP, PPTP, PPPoE),
• FreeBSD/Linux Firewalls (DMZ, Intranet, Town Campus Network Interoperation)

Roles:

• Network Design,
• Unix System Administration

Company: ISP S-Net Ltd. (Kremenchug, Ukraine)
Project Dates: May 2003 - September 2003
Status: done
Technologies/Software:

• Self-Designed Linux Distribution (Debian based),
• IDE-Flash 16M (boot image storage),
• iproute (Advanced Routing Capabilities),
• MOXA Multiport Serial Card,
• Portslave (serial connections),
• PoPToP (PPTP tunneling),
• VTUN and iptunnel (unix-unix tunnelling),
• RADIUS-client (authorisation and accounting),
• PERL (billing and accounting automation),
• OpenSSH (Remote management console)

Roles:

• Unix System Administration,
• Software Design,
• Programming,
• Software Testing