کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
452471 694533 2008 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Learning the valid incoming direction of IP packets
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Learning the valid incoming direction of IP packets
چکیده انگلیسی

Packet forwarding on the Internet is solely based on the destination address of packets, and it is easy to forge the source address of IP packets without affecting the delivery of the packets. To solve this problem, one can have routers check whether or not every packet comes from a correct direction based on its source address field. However, due to routing asymmetry in today’s Internet, a router cannot simply reverse its forwarding table to determine the correct incoming direction of a packet.In this paper, we present the source address validity enforcement protocol, SAVE, which allows routers to learn valid incoming directions for any given source address. SAVE is independent from—and can work with—any specific routing protocol. By only interfacing with the forwarding table at routers, SAVE allows routers to properly propagate valid source address information from source address spaces to all destinations, and allows each router en route to build and maintain an incoming tree to associate each source address prefix with a corresponding incoming interface. The incoming tree is further valuable in handling routing changes: although a routing change at one router could affect the incoming direction of source address spaces from many locations, only the router that sees the change needs to send out new updates. Finally, SAVE has a good performance with low overhead.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Networks - Volume 52, Issue 2, 8 February 2008, Pages 399–417
نویسندگان
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