Download Disseminating Security Updates at Internet Scale by Jun Li PDF

By Jun Li

Disseminating safeguard Updates at net Scale describes a brand new approach, "Revere", that addresses those difficulties. "Revere" builds large-scale, self-organizing and resilient overlay networks on most sensible of the web to push protection updates from dissemination facilities to person nodes. "Revere" additionally units up repository servers for person nodes to drag overlooked protection updates. This ebook additional discusses how one can shield this push-and-pull dissemination process and the way to safe "Revere" overlay networks, contemplating attainable assaults and countermeasures. Disseminating protection Updates at net Scale offers experimental measurements of a prototype implementation of "Revere" accrued utilizing a large-scale orientated strategy. those measurements recommend that "Revere" can convey safeguard updates on the required scale, velocity and resiliency for an affordable cost.

Disseminating safeguard Updates at web Scale should be important to these attempting to layout peer structures at huge scale while safety is a priority, on account that a number of the matters confronted through those designs also are confronted through "Revere". The "Revere" suggestions won't constantly be applicable for different peer structures with very assorted pursuits, however the research of the issues and attainable strategies mentioned the following might be necessary in designing a personalized strategy for such structures.

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When a rendezvous point receives the security update, it then further disseminates the security update. • Just as with a common RBone rooted at a single rendezvous point, a Revere node may receive security updates it does not need. 1 applies here, too. With multiple rendezvous points, a common RBone becomes more resilient. An attacker must compromise all the rendezvous points in order to stop the initiation of security update dissemination. 6 CONCLUSIONS The Internet provides many different kinds of message transmission services, from the lower-level best-effort message delivery to the higherlevel reliable message transmission.

For example, the dissemination center that provides security updates to every node is publicly known already. The new node can simply contact this node. Or, in the local administrative domain of the new node, there may be a node that is already on the RBone and configured as the initial contact for new nodes wanting to join Revere. 2 Directory service A directory server can be established to store information regarding some existing Revere nodes. A new node, in order to locate some existing Revere nodes, can send a query to this directory server.

In this case, the node will still run duplicate checking to help avoid dissemination loops. The security check, however, is optional since this node will not use those updates at all; it can rely on other nodes that really need those security updates to authenticate them. We will discuss duplicate checking and security checking further in Chapter 4 when we discuss the dissemination procedure. Chapter 3: RBone: A Self-Organized Resilient Overlay Network 45 A common RBone rooted at a rendezvous point also introduces new issues regarding resiliency: if the rendezvous point is crashed or subverted, or if the path from a dissemination center to the rendezvous point is broken, security update dissemination will fail.

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