Network security and administration

[Nemoy]

Dmitry Dvornichenko

Tel. (home) 380 (62) 334-29-45; (work) 380 (62) 332-94-99
e-mail: dda@cbsd.donetsk.ua
Address: Apt 6., 35 R.Luksemburg st, Donetsk, 83050, Ukraine

16 years of experience as a Systems Analyst, Programmer and Administrator of LAN/WAN networks (last 6 year). Very strong in the network security and development of corporate intranet applications.

Has extensive experience with:

- administration and security of corporate/regional distributed networks based on Linux/Unix platform

EDUCATION

Donetsk National University
Faculty: physical
Chair of cybernetics and computer facilities.
Speciality: applied mathematics and engineering cybernetics.
Qualification: applied mathematician


Certifications by Brainbench

Linux Administration (General)

Certifications by RetraTech

Linux Administration

MAJOR ASSIGNMENTS

March 2001 - Present

As a chief engineer of a telecommunication sector of a department of computer technologies and telecommunications Donetsk Regional Filial of UkrSotsBank administer of corporate WAN with Internet connection (network security, DNS, HTTP-server, FTP-server, Dial-Up server, e-mail-server, NNTP-server, Proxy-server, mail -NNTP gateway, Linux-firewall, VPN(IPSEC), SSH, snort).
Administration of regional distributed Linux-servers.
Has build VPN-network based on IPSec (FreeSWAN, PGPNet, Windows 2000/XP IPSec, hardware router Planet VRT-401, DLink DI-804).
Has developed antispam filter Used: sendmail, MySql, C, Perl.
Has developed antivirus protecting system for sendmail, inn.
Has designed and developed web-based system for controling of LAN/WAN networks.
Had developed corporate multiplatform mail. Used: MySQL,C.
Has designed and developed HTTP/FTP gateway for automation of downloading files from Internet to local FTP-site.

Environment: HTML, MYSQL, PERL, TCP/IP, PPP, FRAME RELAY, DIALUP, FTP, CGI, WWW, MYSQL, DNS, SENDMAIL, NNTP, JAVASCRIPT, SHELL, IPSEC, SSH, C/C++

October 1997 - February 2001

As a chief of a computer department Central-City Branch of Donetsk Regional Directorate of UkrSotsBank creation of the mixed network in branch on basis of Linux (RedHat) and Windows NT 4.0. Administration of a network in structure 6 servers (2 Linux and 4 Windows NT 4.0) and 25 workstations in a local network and 1 workstations, connected through dial-up. Support of a Database Oracle 7.3 (installation, administration, installation new PL/SQL procedures and backup).
Installation, set-up and administration Intranet on the basis of Linux consisting of DNS server, HTTP server, FTP server, Remote Access server, sendmail, NNTP server, Proxy server. Installation, set-up and administration Remote Access Server, routing (4 sub-networks), File server on the basis of Windows NT 4.0. Installation, set-up and administration of workstations with Windows 95. Installation and administration of a local network, connected to a national corporate network by Vanguard (Motorola) and Tainet modem. The branch has an access to Internet.
During Intranet creation:
Has designed and developed on-line catalogue for saving links with describes and category divided. Used: PERL, APACHE WEB SERVER.
Has designed and developed browser interface to a system of the reporting of branch allowing to simplify installation and administration of workstations, by refusing from installation of the reporting program on each workstation. The interface to the program of the reporting also has become simpler, instead of the command line the users use the window interface. Used: PERL, APACHE WEB SERVER and C++.
Has designed and developed browser interface to a system of branch data replicate to corporate storehouse in regional directorate. Has allowed to refuse installation of utilities of import / export and Oracle client on workstations and necessities of distribution of the rights on export of data to the usual users. Also these systems have simplified administration and management of processes of replicate of data and generate of the reports by centralization. Used: PERL, APACHE WEB SERVER and C++.
Has designed and developed the browser interface to a file mail system. Has allowed refusing of the specialized program on each workstation and from direct access to the file-server for reading and sending of the telegram, that has simplified administration and has increased safety of data. The mail functions on two machines (Linux and Windows NT or two Windows NT), that allows to distribute a load. Functional filling: survey of contents of a letter box, survey of files (both text and MS Office), survey of contents of the packed telegram (RAR, ARJ, ZIP archives and many other), creation, editing and sending of files to a mail system National bank of Ukraine, monitoring of operations of the user. Used: PERL, APACHE WEB SERVER (LINUX), C++, OMNIHTTPD WEB SERVER (WINDOWS NT).
Has designed and developed the on-line catalogue with password protected access (order of design-studio B.E.R.S. for site http://www.flight.spb.ru )
Has designed and developed scripts for viewing and addition of news, viewing and addition of models, guest book, showing and editing random banners from the list, viewing and addition of files and prices (order of design-studio B.E.R.S. for site http://www.flight.spb.ru ) Used: PERL
Has designed and developed for the site http://www.nera.ru system for remote creation and control of contents with differentiation of access rights. Used: PERL

Environment: HTML, ORACLE 7.3, PERL (LINUX & WINDOWS), TCP/IP, SLIP, PPP, NETBIOS, FRAME RELAY, DIALUP, FTP, CGI, WWW, DNS, SENDMAIL, NNTP, MS VC++ 5.0, JAVASCRIPT, SHELL, WINDOWS NT

May 1997 - September 1997

As leading engineer of a department of networks and systemotechnics of Donetsk Regional Directorate of UkrSotsBank has designed and developed the gateway server between file mail and MS Exchange Server. The program forwards files from the directory on an e-mail post box and conversely. Simultaneously allows treating any amount of directories and post boxes using multithread technology. The program supplies standard Windows interface.

Environment: WINDOWS NT, MS VC++ 5.0, MS EXCHANGE SERVER, Networking and MFC

September 1995 - April 1997

As a chief engineer of a sector of software engineering of a department of computer technologies and telecommunications Donetsk Regional Directorate of UkrSotsBank participated in designing and development of the Automated Banking System DONIX. Has designed a DataBase and gateway to the system of electronic payments of National bank of Ukraine. Functions of the program: generating of payment files, dispatching them to Paiment House of National bank of Ukraine, reception and checking of payment files in the correspondence with criterions of National bank of Ukraine, verification of the corresponding account with the statement from National bank of Ukraine after an end of the work day, watching of critical, fail and non-standard situations of payment passing, watching and monitoring conditions of the bank correspondent account, generating all necessary reports for the customers for the analysis of a current condition and for issue to regulating organs. Mission-critical application. The program is installed in 22 branches and 2 regional directorates. The program has passed certification in National bank of Ukraine and completely conformed the Safety Requirements of National Bank of Ukraine. The system DONIX is intended for automation of bank activity in all it business.

Environment: ORACLE 7.3, GUPTA, SQL WINDOWS, WINDOWS NT, CLIENT SERVER.

November 1994 - August 1995

As leading engineer of a sector of software engineering of a department of computer technologies and telecommunications Donetsk Regional Directorate of UkrSotsBank.
Has designed and developed corporate data warehouse, system of the collection and preliminary monitoring data and report generating program. The system was used for daily data retrieval from branch DataBases and transfer to regional directorate, where they were checked up for consistency and were saved in a common corporate DataBase. On the basis of these data the reports for National bank of Ukraine and Central UkrSotsBank were made. The report generating system allowed to analyze data and their preliminary survey, and also to correct and to receive an information for the consequent analysis. The system allowed to completely automate process of deriving, checking and aggregating of bank branches data in directorate and to simplify generating of reports.

Environment: MS DOS 6.2, CLIPPER

November 1993 - September 1994

As Software Engineer of a sector of telecommunications of a department of computer technologies and telecommunications Donetsk Regional Directorate of UkrSotsBank designed and developed a system of corporate file mail used by 19 branches of area and regional directorate. Total of workstations - about 300. Daily traffic - about 3000 files. The mail has the gateway server in a national mail system of National Bank of Ukraine. The system has confirmations about delivery, dispatch, creation and editing of the telegrams, view of the obtained telegram, including the packed with archive software (ARJ, ZIP, LHA). All user operations were logged. The "Customer-Bank" system uses mail system as well. The system allowed complete work automating with file post of National Bank of Ukraine. Also was involved in designing and creation of communication center to communicate with bank branches.

Environment: MS DOS, BORLAND PASCAL 7.0.