Multicast Network Address Translation Security
AssigneeEVS Broadcast Equipment SA
InventorsWouter Gerrit Adriaan van Rooy, Johannes Petrus Theodorus Nouws
Life of this patent
Estimating the term…
Abstract
A broadcasting aware edge-device network product comprising two or more NMOS nodes, a look-up table and an SDP file re-writer. Each NMOS node is connected to a different network segment and receives SDP files from the network segment to which the NMOS node is connected. The look-up table stores network address translation rules between a first and a second network segment. The SDP file re-writer generates a modified SDP file by re-writing an SDP file received from one of the NMOS nodes by modifying the destination address according to the look-up table. The SDP file re-writer forwards the modified SDP file to the other NMOS node. The other NMOS node registers the modified SDP file with another network segment.
Claims15
A network product, in particular a broadcasting aware edge-device, comprising
- a first Networked Media Open Specifications (NMOS) node connected to a first network segment, wherein the first NMOS node receives a first Session Description Protocol (SDP) file from the first network segment;
- a second NMOS node connected to a second network segment, wherein the second NMOS node receives a second SDP file from the second network segment;
- a look-up table to store network address translation rules between the first network segment and the second network segment;
- and
- an SDP file re-writer to
- generate a modified first SDP file by re-writing a destination address in the first SDP file received from the first NMOS node according to the look-up table and forwarding the modified first SDP file to the second NMOS node, wherein the second NMOS node registers the modified first SDP file with the second network segment, and
- generate a modified second SDP file by re-writing a destination address in the second SDP file received from the second NMOS node according to the look-up table and forwarding the modified second SDP file to the first NMOS node, wherein the first NMOS node registers the modified second SDP file with the first network segment.
A method for connecting network segments, the method comprising:
- receiving a Session Description Protocol (SDP) file from a first Networked Media Open Specifications (NMOS) controller controlling a first network segment;
- modifying the SDP file according to a look-up table;
- forwarding the modified SDP file to a second NMOS controller controlling a second network segment.
Dependencies are inferred from the claim text.