Journal of KIISE:Computing Practices and Letters (한국정보과학회논문지:컴퓨팅의 실제 및 레터)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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Interworking between PPP CHAP and RADIUS Authentication Server on GPRS Network

GPRS 망에서 PPP CHAP과 RADIUS 인증 서버 연계 방안

  • Published : 2003.10.01
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Abstract

We usually applied PPP CHAP (Point-to-Point Protocol Challenge Handshake Authentication Protocol) when the visited ISP subscriber accesses to authentication server in own home ISP network and IP Assignment for remote Internet service. But PPP CHAP doesn't support in case of visited ISP subscriber in GPRS network accesses to authentication server in own home ISP network for wireless Internet service. We suggest solution this problem with PPP CHAP improvement. For this we propose the modified PPP CHAP message format, PCO Message format at MT, and interworking message and format between GGSN and RADIUS in home ISP network for wireless internet service of mobile ISP subscriber at GPRS network in this paper. We also show authentication results when visited mobile ISP subscriber via PPP CHAP at GPRS network accesses the RADIUS server in home ISP network.

GPRS 망으로 이동한 이동 ISP 가입자는 자신의 홈 ISP 망을 접속하여 무선 인터넷 서비스를 받기 위해 홈 ISP 망으로부터 인증을 받고 IP를 할당받아야 한다. 이에 본 논문에서는 GPRS 망으로 이동한 이동 ISP 가입자의 인증 처리를 위해 PPP CHAP과 RADIUS 인증 서버의 연계 방안을 제시한다. 이를 위해 우선 이동 ISP 망 가입자의 단말에서 정의되어야 할 인증 메시지 구조와 GPRS 망 게이트웨이에서 구현될 메시지 구조를 제시한다. 아울러 GGSN과 ISP 망간의 인증 메시지 구조 정의를 기반으로 제안된 내용에 대해 시험 환경 구축을 통해 실제 시뮬레이션 결과를 보였다.

Keywords

References

  1. 3GPP, 'GPRS Service Description, Stage 2,' 3G TS 23.060 version 3.3.0, March 2000
  2. 3GPP, 'GPRS Service Description, Stage 1,' 3G TS 22.060 version 3.3.0, March 2000
  3. 3GPP, 'Combined GSM and Mobile IP Mobility Handling in UMTS IP CN,' 3G TR 23.923 version 3.0.0, May 2000
  4. 3GPP, 'Interworking between the Public Land Mobile Network (PLMN) supporting Packet Based Services and Packet Data Networks (PDN),' 3G TS 29.061 version 3.3.0, March 2000
  5. 3GPP, 'Mobile radio interface layer 3 specification; Core Network Protocols-Stage 3', 3GTS 24.008 version 3.4:1, July 2000
  6. R. Droms, 'Dynamic Host Configuration Protocol (DHCP),' RFC 2131, March 1997
  7. C. Rigney, S. Willens, A. Rubens, and W. Simpson, 'Remote Authentication Dial In User Service (RADIUS),' RFC 2865, June. 2000
  8. William Allen Simpson, 'The Point-to-Point Protocol (PPP),' RFC1661, July 1994
  9. C. Perkins, 'IP Mobility Support,' RFC2002, Oct. 1996
  10. C. Perkins, 'IP Encapsulation within IP,' RFC2003, Oct. 1996
  11. Richard Stevens, 'UNIX Network Programming; Networking APIs: Sockets and XTI Volume 1,' 1997
  12. G McGregor, 'The PPP Internet Protocol Control Protocol (IPCP),' RFC1172, May 1992
  13. W. Simpson, PPP Challenge Handshake Authentication Protocol (CHAP),' RFC1994, August 1996
  14. W. Simpson, PPP Authentication Protocols (PAP),' RFC1334, October 1992