摘要:
Procédé pour l'établissement d'une session de communication entre un premier client (C 1 ) situé au sein d'un premier réseau (N 1 ) et un second client (C 2 ) par l'intermédiaire d'un serveur de signalisation (S) situé dans un deuxième réseau (N), consistant en une étape de maintien de l'association entre une première adresse et une deuxième adresse du premier client au sein d'un équipement de traduction d'adresse, par la transmission de messages de signalisation d'enregistrement par le premier client. Le serveur : - mémorise un message de signalisation entrant provenant du second client, - répond au message d'enregistrement suivant par un message de réponse (R N ) requérant l'émission d'un nouveau message d'enregistrement (M N+1 ) utilisant le protocole TCP, et - délivre le message de signalisation (MI) entrant après que le nouveau message d'enregistrement est reçu.
摘要:
Disclosed are an interworking system between IP networks using different IP addressing scheme, an application layer gateway (ALG), a network address translator, an interworking method, and a SIP message routing method. The interworking system between a local network using a private IP and a global network using a global IP includes a STUN server and an application layer gateway (ALG). The STUN server provides binding information of header information of a global IP binding request. The application layer gateway (ALG) performs a global IP binding request with header information changed by IP masquerading, and performs routing by applying the received binding information to media receiving address information of a SIP message.
摘要:
For achieving packet authentication according to an applicable security policy between a sending node (903) and a receiving node (902) in a network, the following steps are taken: the transformations occurring to a packet en route between the sending node and the receiving node are discovered dynamically (1003, 1004), the discovered transformations are checked (1004) to be acceptable based on the applicable security policy, and the dynamically discovered, acceptable transformations are compensated for (1004, 1006) before authenticating packets transmitted from the sending node to the receiving node.
摘要:
For achieving packet authentication according to an applicable security policy between a sending node (903) and a receiving node (902) in a network, the following steps are taken: the transformations occurring to a packet en route between the sending node and the receiving node are discovered dynamically (1003, 1004), the discovered transformations are checked (1004) to be acceptable based on the applicable security policy, and the dynamically discovered, acceptable transformations are compensated for (1004, 1006) before authenticating packets transmitted from the sending node to the receiving node.
摘要:
Disclosed are methods and apparatus for efficiently and reliably handling DNS (domain name service) PTR (pointer) queries and replies across IPv4 and IPv6 networks. In general terms, an IPv4 DNS PTR query which is sent by an IPv4 device to an IPv6 DNS Server is intercepted or received, for example, by a network device configured with NAT-PT and DNS-ALG. The received IPv4 DNS PTR query is then translated into two different types of IPv6 DNS PTR queries: a query having an "IP6.INT" string and a query having an "IP6.ARPA" string. Both types of IPv6 queries are then sent to the IPv6 destination DNS Server. Whether the DNS sends an IP6.ARPA or an IP6.INT type reply or both types of replies back, a valid reply is identified (if present) and then translated before reaching the IPv4 device.
摘要:
Disclosed are an interworking system between IP networks using different IP addressing scheme, an application layer gateway (ALG), a network address translator, an interworking method, and a SIP message routing method. The interworking system between a local network using a private IP and a global network using a global IP includes a STUN server and an application layer gateway (ALG). The STUN server provides binding information of header information of a global IP binding request. The application layer gateway (ALG) performs a global IP binding request with header Information changed by IP masquerading, and performs routing by applying the received binding information to media receiving address information of a SIP message.