PPT-COLLABORATIVE TCP SEQUENCE NUMBER

INFERENCE ATTACK BY Zhiyun Qian ZMorley MaoYinglian Xie Presented By Yugendhar Reddy Sarabudla Todays AGENDA Introduction Background description TCP Sequence Number Inference Attack. (. AccECN. ). draft-kuehlewind-tcpm-accurate-ecn-03. Bob Briscoe, BT. Richard Scheffenegger, NetApp. Mirja . Kühlewind. , Stuttgart . Uni. IETF-90, Jul’14. Bob Briscoe’s work is part-funded by the European Community. Sliding Windows,. Flow Control,. and Congestion Control. Lecture material taken from. “Computer Networks . A Systems Approach. ”, Fourth Ed.,Peterson and Davie,. Morgan Kaufmann, 2007. .. Advanced Computer Networks . TCP Algorithms:. Four intertwined algorithms used commonly in TCP implementations. Slow Start. - Every . ack. increases the sender’s window (. cwnd. ). size by 1. Congestion Avoidance . - Reducing sender’s window size by half at experience of loss, and increase the sender’s window at the rate of about . draft-handley-mptcp-routing-00. Mark Handley. Costin Raiciu. Marcelo Bagnulo. Multiaddressed MP-TCP. Host is connected to the Internet via more than one path.. Site where host resides is multihomed.. Computer Networks. Principles of Congestion Control. Congestion:. informally: “too many sources sending too much data too fast for the . network. to handle”. different from flow control!. manifestations:. Sylvia Ratnasamy. http://inst.eecs.berkeley.edu/~ee122. /. Material thanks to Ion . Stoica. , Scott . Shenker. , Jennifer Rexford, Nick . McKeown. , and many other colleagues. 2. TCP Header. Source port. Costin Raiciu. Advanced Topics in Distributed Systems. 2011. TCP Primer. Loss recovery. Fast retransmit. Timeouts. Congestion Control. Buffer sizing. TCP . Incast. Why does it happen?. How bad is it?. Presenter – Bob Kinicki. Advanced Computer Networks : XCP paper. 2. Fairness in TCP Variants. n. s-2 dumbbell simulations. C = 1 . Gbps. Min RTT = 104 . ms.. Drop tail routers. 1500 byte packets. Buffer size = BDP. Mar 29, 2017. TCP. T. ransmission . C. ontrol . P. rotocol. Transport layer protocol. User Datagram Protocol (UDP) is another one. 2. TCP segment structure. Bit. 0. 1. 2. 3. 0. 1. 2. 3. 4. 5. 6. 7. 8. How to Crack Sequence Number Under A Second. By. . TCP Vegas Lawrence s. Brakmo Sean W. O’Malley Larry l. Peterson Presented TCP Vegas in 1994 Presented by Chung Tran TCP Vegas VS TCP Reno When TCP Vegas was research and presented in 1994 it stated that it have a better throughput than TCP Reno by 40 to 70 percent Characterizing collaborative/coordinated attacks. Types of collaborative attacks. Identifying Malicious activity. Identifying Collaborative Attack. . . 3. Collaborative Attacks. Informal definition:. Q1: . The size of the . TCP . Receive window . never changes throughout the duration of the connection?. TCP . Basics. Q1: . The size of the . TCP . Receive window . never changes throughout the duration of the connection?. EE122 Discussion. 10/19/2011. DNS. Mapping between names (e.g., www.cnn.com) and addresses (e.g., 157.166.255.18). Hierarchy of DNS servers. Root servers. Top-level domain (TLD) servers. Authoritative DNS servers.