WO2006081877A1 - Verfahren zum routen von internetverbindungen über netzübergänge - Google Patents
Verfahren zum routen von internetverbindungen über netzübergänge Download PDFInfo
- Publication number
- WO2006081877A1 WO2006081877A1 PCT/EP2005/054476 EP2005054476W WO2006081877A1 WO 2006081877 A1 WO2006081877 A1 WO 2006081877A1 EP 2005054476 W EP2005054476 W EP 2005054476W WO 2006081877 A1 WO2006081877 A1 WO 2006081877A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- network
- gateway
- lan
- netid
- additional information
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1023—Media gateways
- H04L65/103—Media gateways in the network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/2514—Translation of Internet protocol [IP] addresses between local and global IP addresses
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/2521—Translation architectures other than single NAT servers
- H04L61/2535—Multiple local networks, e.g. resolving potential IP address conflicts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1033—Signalling gateways
- H04L65/104—Signalling gateways in the network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
Definitions
- IP Internet Protocol
- the gateway between the LAN and the public network must convert the private IP address to a network-wide unique (global) IP address. This usually happens with a Network Address Translation (NAT) functionality.
- Network Address Port Translation Functionality (NAPT).
- the NAT function is a protocol that describes the conversion of IP addresses from one network to another and is used on routers or firewalls. With the NAT function can z. B. a network address 10.0.0.2 to 192.168.0.2, another IP address 10.0.0.3 to 192.168.0.3 etc. be implemented. With NAPT it is possible analogously to translate port numbers.
- the most common case of using the NAT functionality is the connection of a local area network (i.e., the IP addresses of all machines in a network) via only one official IP address to a public network. This often happens over a firewall. This allows the IP addresses of single or multiple networks to be concealed (mascerading). A private network is represented by a single IP address.
- the NAT functionality thus on the one hand ensures that the increasingly scarce public IP addresses are extended by additional (private) IP addresses.
- the NAT functionality of data security is lent, since the internal structure of the network remains hidden to the outside (security aspect).
- the subscribers of a local network are interpreted in this case as subscribers of different networks. In the event that subscribers use different network cards of a firewall or network. connect multiple firewalls to the public network, this assignment is lost.
- the (application layer) gateway only recognizes one IP address for two subscribers of a local network, then the RTP data stream is routed locally. If the gateway recognizes two IP addresses, the RTP data stream is routed globally. H . across the gateway. As a consequence, data streams can no longer be kept local in the presence of multiple gateways, even if the nodes are located within a routable network segment.
- the invention has for its object to provide a way and a device how networks can be clearly identified across gateways away.
- Network identification number This is common to all participants within a routable network segment. Thus, a downstream entity (NAT traversal, softswitch, ...) can detect whether a data connection between two communication points can be made directly (peer-to-peer).
- the network identification number (NetID) can be part of a user-specific field within the message or can also be introduced as a naming convention (eg userl @ netID. Siemens. De).
- the administration of the network identification number can be done via the DHCP process, so all participants get this NetID at the start-up. This information is sent along with the signaling, and is interpreted by the signaling endpoints.
- a public network ON which communicates with a local area network LAN via two routers R in operative connection.
- a router R is in each case arranged in a gateway.
- the two subscriber terminals A, B are to be regarded as part of the local area network LAN.
- the signaling information of the two subscriber terminals A, B are supplied, for example via a protocol MGCP (Media Gateway Control Protocol) arranged in the public network Call Agent CA.
- the private IP addresses in the network LAN are assigned by a server S in the context of the DHCP process the terminals as well as the network identification number NetID.
- the server S is thus also responsible for allocating the network identification number NetID, which is valid for all subscribers of the local network.
- a gateway IP-IP GW is integrated into the public network ON. The conversion of the private IP addresses to global IP addresses is performed in the routers R.
- a voice carrier offers a MGCP-based VoIP service for the customers local network LAN.
- the voice data stream RTP should, if possible, be located within the local network for local calls. be routed. All subscribers of the local network receive from server S both local IP addresses and a network identification number NetID.
- Subscriber A wishes in the following a VoIP connection to subscriber B. Subscriber A transmits the private IP address together with the network identification number NetID to the call agent CA and the gateway IP IP GW in an MGCP message.
- the NAT function is executed, which converts the private IP addresses into a public IP address.
- the users of the LAN network are also assigned several public IP addresses.
- the gateway IP-IP GW can thus no longer recognize solely on the basis of the IP address as a criterion that an internal RTP connection between the two subscriber terminals A, B of the local area network LAN can be created for a VoIP connection.
- the gateway IP-IP GW recognizes that the two subscriber terminals A, B are located in the same IP network and creates the RTP connection between the two subscriber terminals A in the local network. B.
- the advantage of this approach is that the network identification number NetID is given in the payload of the IP packets (Layer 2) and thus the evaluation takes place in the gateway IP-IP GW at the application level.
- the invention has been described in terms of the MGCP protocol. It is not limited to the MGCP protocol, but any other protocol such as the MEGACO or SIP protocols can be used here. Furthermore, the invention is not limited to VoIP alone as RTP, other data connections can also be run.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/883,511 US20080117923A1 (en) | 2005-02-03 | 2005-09-09 | Method for Routing Internet Connections Via Network Gateways |
EP05789478A EP1844592A1 (de) | 2005-02-03 | 2005-09-09 | Verfahren zum routen von internetverbindungen ]ber netz]berg[nge |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005005083.2 | 2005-02-03 | ||
DE102005005083 | 2005-02-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006081877A1 true WO2006081877A1 (de) | 2006-08-10 |
Family
ID=35169610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/054476 WO2006081877A1 (de) | 2005-02-03 | 2005-09-09 | Verfahren zum routen von internetverbindungen über netzübergänge |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080117923A1 (de) |
EP (1) | EP1844592A1 (de) |
CN (2) | CN101116303A (de) |
WO (1) | WO2006081877A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8844018B2 (en) * | 2008-12-18 | 2014-09-23 | At&T Intellectual Property I, L.P. | Methods and apparatus to enhance security in residential networks |
US10530461B2 (en) * | 2015-03-25 | 2020-01-07 | Qualcomm Incorporated | Relay discovery and association messages |
CN106302861B (zh) * | 2016-09-27 | 2020-04-17 | 新华三技术有限公司 | 一种地址分配方法及装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040139230A1 (en) * | 2002-12-27 | 2004-07-15 | Lg Electronics Inc. | SIP service method in a network having a NAT |
US20050008024A1 (en) * | 2003-06-27 | 2005-01-13 | Marconi Communications, Inc. | Gateway and method |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6308328B1 (en) * | 1997-01-17 | 2001-10-23 | Scientific-Atlanta, Inc. | Usage statistics collection for a cable data delivery system |
US7437474B2 (en) * | 2001-02-22 | 2008-10-14 | Intel Corporation | Proxy-less packet routing between private and public address realms |
US8363647B2 (en) * | 2001-04-03 | 2013-01-29 | Voxpath Networks, Inc. | System and method for configuring an IP telephony device |
US20020186698A1 (en) * | 2001-06-12 | 2002-12-12 | Glen Ceniza | System to map remote lan hosts to local IP addresses |
US7360242B2 (en) * | 2001-11-19 | 2008-04-15 | Stonesoft Corporation | Personal firewall with location detection |
US20030110379A1 (en) * | 2001-12-07 | 2003-06-12 | Tatu Ylonen | Application gateway system, and method for maintaining security in a packet-switched information network |
US7139841B1 (en) * | 2002-07-24 | 2006-11-21 | Cisco Technology, Inc. | Method and apparatus for handling embedded address in data sent through multiple network address translation (NAT) devices |
US20080301298A1 (en) * | 2002-07-29 | 2008-12-04 | Linda Bernardi | Identifying a computing device |
FR2847097B1 (fr) * | 2002-11-08 | 2005-04-01 | Cit Alcatel | Procede pour attribuer a un terminal un identifiant de reseau virtuel; terminal, serveur de configuration dynamique d'un hote, et serveur d'annuaire pour la mise en oeuvre de ce procede |
AU2003297433A1 (en) * | 2002-12-24 | 2004-07-22 | Samrat Vasisht | Method, system and device for automatically configuring a communications network |
KR20040082655A (ko) * | 2003-03-19 | 2004-09-30 | 삼성전자주식회사 | 이중 스택 변환 메커니즘을 이용한 모바일 아이피 통신시스템 및 방법 |
US7313145B1 (en) * | 2003-05-28 | 2007-12-25 | Nortel Networks Limited | Method and system for establishing paths between end points in packet data networks |
IL156924A (en) * | 2003-07-15 | 2009-05-04 | Tadiran Telecom Ltd | Communication between users located behind nat device |
US7990948B2 (en) * | 2003-08-15 | 2011-08-02 | Quintence Properties Kg, Llc | Serverless and switchless internet protocol telephony system and method |
US7411975B1 (en) * | 2004-08-26 | 2008-08-12 | Juniper Networks, Inc. | Multimedia over internet protocol border controller for network-based virtual private networks |
-
2005
- 2005-09-09 US US11/883,511 patent/US20080117923A1/en not_active Abandoned
- 2005-09-09 WO PCT/EP2005/054476 patent/WO2006081877A1/de active Application Filing
- 2005-09-09 EP EP05789478A patent/EP1844592A1/de not_active Withdrawn
- 2005-09-09 CN CNA2005800477429A patent/CN101116303A/zh active Pending
- 2005-09-09 CN CN2012105608103A patent/CN103002066A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040139230A1 (en) * | 2002-12-27 | 2004-07-15 | Lg Electronics Inc. | SIP service method in a network having a NAT |
US20050008024A1 (en) * | 2003-06-27 | 2005-01-13 | Marconi Communications, Inc. | Gateway and method |
Non-Patent Citations (1)
Title |
---|
THERNELIUS F: "SIP, NAT, and Firewalls", ERICSSON-DEPARTMENT OF TELEINFORMATICS, May 2000 (2000-05-01), XP002209773 * |
Also Published As
Publication number | Publication date |
---|---|
EP1844592A1 (de) | 2007-10-17 |
CN101116303A (zh) | 2008-01-30 |
US20080117923A1 (en) | 2008-05-22 |
CN103002066A (zh) | 2013-03-27 |
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