Master Course Computer Networks IN2097 - TUM

More documents

Recommendations

Info

Recap q� NAT behavior on outgoing packets and incoming packets §� Binding: Port and NAT • Endpoint/Connection independent vs. dependent §� Filtering: independent vs. (port/address) restricted §� Processing Model for describing individual steps q� NAT Traversal Problem §� Realm specific IP addresses in the payload §� P2P services §� Bundled Session Applications §� Unsupported protocol q� NAT Traversal techniques §� Behavior based vs. active support by the NAT/ext. entities Network IN2097 - Master Security, Course WS 2008/09, Computer Chapter Networks, 9 WS 2012/2013 2
Agenda q� Skype as one example for an application that is known to work in many environments q� Large Scale Network Address Translation §� At provider side §� Challenges and approaches q� Middleboxes §� Today’s Internet Architecture §� Classification of and reasons for middleboxes §� Behavior of middleboxes §� Concerns Network IN2097 - Master Security, Course WS 2008/09, Computer Chapter Networks, 9 WS 2012/2013 3
Page 1: Chair for Network Architectures and
Page 6 and 7: „Join“ process q� Tasks perfo
Page 8 and 9: Hole Punching in Skype http://www.h
Page 10 and 11: Recap: Problem q� More and more d
Page 12 and 13: Large Scale NAT (LSN) q� Facts §
Page 14 and 15: Example - Vodafone LTE network q�
Page 16 and 17: NAT 444 Network IN2097 - Master Sec
Page 18 and 19: NAT 464 Network IN2097 - Master Sec
Page 20 and 21: Dual Stack Lite Network IN2097 - Ma
Page 22 and 23: Network Address Translation today q
Page 24 and 25: Chair for Network Architectures and
Page 26 and 27: Some Reasons for today’s architec
Page 28 and 29: Netalyzr (ICSI, Berkeley) q� Netw
Page 30 and 31: Middleboxes often address practical
Page 32 and 33: Middlebox Functionality according t
Page 34 and 35: NAT Analyzer - Measuring NAT and MB
Page 36 and 37: NAT Analyzer q� Connectivity test
Page 38 and 39: NAT Analyzer- Results (Central Euro
Page 40 and 41: NAT Binding Results - Recap q� NA
Page 42 and 43: Connection dependent binding (2) 27
Page 44 and 45: Approach: Information Model q� De
Page 46 and 47: Stateful Element (2) q� State is
Page 48 and 49: Translation and Modification q� F
Page 50 and 51: Middlebox Instance (cont) Network I
Page 52 and 53:
UDP Hole Punching Example q� init
Page 54 and 55:
Step 2) Prevent State from being cl
Page 56 and 57:
Assessment q� Future application
show all

Master Course Computer Networks IN2097 - TUM

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?