Submitted by Mariana Grueva, Head of Telecommunication Division, NIMH Sofia, Bulgaria ISS/ICM-MTN & ET-OI 2006 Geneva, 16-19 May 2006 RTH SOFIA STATUS OF IMPLEMENTATION OF RTH Sofia
RTH SOFIA • RTH - Sofia’s zone of responsibility as appointed to the regional meteorological telecommunication plan are: Albania, Bulgaria, Cyprus, The Former Yugoslav Republic of Macedonia, Romania, Serbia and Montenegro andSyrian Arab Republic. • RTH - Sofia successfully migrated to the Regional Meteorological Data Communication Network (RMDCN) in Region VI (in March 2000). • RTH – Sofiause TCP/IP as the data transport protocol, with FTP, to all connections.
VPN • Facilities: • Communications • -LAN access to POP • VPN server • - software emulation based on PC/Free BSD The VCP Coordinated Project: Implementation of the GTS circuit Tirana/Sofia over the Internet The presented project cover the necessity for operative international telecommunication link of NMC-Tirana into the GTS under the recommendations of WMO. The Project propose: ■ PC -based file distribution system at NMC-Tirana; ■ IPSec VPN over Internet. The point of the Project is the establishment of “Virtual Private Network” (VPN) over the public Internet. RA VI RMDCN Goal Corporative Intranet environment – VPN technologies RTH-Sofia ↔ NMC-Tirana How • Data exchange over global Internet • IPsectechnology AFTN NMC DAMASCUS NMC ATHENS NMC LARNACA RTH SOFIA Circuits RMDCN; IN OUT (Kbps) RTH Vienna 8 8 RTH Offenbach: 32 16 NMC Budapest 16 8 ECMWF: 64 16 Message Switching System MESSIR – Comm (COROBOR) Windows server professional 2003 Length of bulletins that can be handled 300K End of 2006 is the target date to upgrade the system and to reach the 500K. Satellite distribution systems: DWDSAT NTSADIS KONGSBERG SPACETC’S MSG Ground receiving station IPSec VPN over Internet The Project of RTH Sofia was implemented in NMC Tirana on March 2006 Internet Message Switching System MSS TRANSMET (Meteo France) running on OS Linux (Slackware) and Intel based PCs (Pentium IV - 2 MHz). Installed in 2002 by RTH Sofia. Data base system - developed by RTH Sofia. Maximum length of bulletins : alphanumeric – 15KB binary – no limit Other systems: RETIM2000 METEOSAT MSG RTH-Sofia implements all of Internet services and Internet technologies as VPN, security methods and technologies, etc. RTH-Sofia implements WWW-server and Web technologies. NMC BELGRADE RTH PRAGUE NMC TIRANA RTH SOFIA Circuits √ RMDCN IN OUT (Kbps) WMC Moscow 16 8 ECMWF 64 8 √ NMC Chisinau -a PTT analogue link (19.2 - 33 Kbps) Message Switching System MESSIR-COMM (Corobor) Length of bulletins that can be handled 500K Other systems: RETIM2000 RTH TOULOUSE AFD Installed by RTH Sofia. MTN NMC SKOPJE WMC MOSCOW NMC BUCHAREST AFTN - V.35 RETIM2000 - receiver,MESSIR VISION application. MSG system by COROBOR - 2006
RTH-Sofia PC FreeBSD (1) Internet Access Device POP Internet POP leased line LAN Intranet n e t w o r k c o n f i g u r a t i o n VPN+IPSec+ Firewall PC Free BSD DMZ (4) leased line NMC-Tirana VPN+IPSec+ Firewal + NAT DMZ (2) PC Linux FTP server + AFD (3) PC Windows IPSec Tunnel + IKE operator work place
RTH SOFIA Back-up systems • Transfer of bulletins to RTH-Sofia by using of HTTPS protocol • Exchange of data by using of e-mail
RTH SOFIA Advantages: √ By connecting NMC Tirana to GTS is decreased the number of NMCs in the RTH Sofia’s zone of responsibility not included to the GTS; √RTH Sofia and all associated NMCs in the zone of responsibility use Internet; √ Using of e-mail for the administrative exchange of message; √ Promptly and in time change of the set of data exchanged in the zone of responsibility by a NMC request and between MTN RTHs, as well.
RTH SOFIA Problems About connection to the GTS √ There is a NMC not connected to GTS yet: NMC Damascus VPN/IPSec over Internet connection between RTH Sofia and NMC Damascus – recommendation of RAVI WG PIW, fifth session; √ NMC Larnaca uses low speed connection to GTS via NMC Athens The attempt of RTH Sofia could be apply in NMC Larnaca for the VPN/IPSec over Internet connection between RTH Sofia and NMC Larnaca by the implementation of a relevant project; About equipments RTH Sofia needs of the hardware upgrade. ABOUT ADMINISTRATIVE COMMUNICATIONS The exchange of administrative messages to/from NMC Skopje is very difficult to its focal point. OTHERS A need of training – new telecommunication/IT technologies.
RTH SOFIA END
RA VI RMDCN AFTN NMC DAMASCUS NMC ATHENS NMC LARNACA RTH SOFIA Internet NMC BELGRADE RTH PRAGUE NMC TIRANA RTH SOFIA RTH TOULOUSE MTN NMC SKOPJE WMC MOSCOW NMC BUCHAREST