'Sequence numbers' presentation slideshows

Implementing Firewall Technologies

Implementing Firewall Technologies. Firewalls. Network firewalls separate protected from non-protected areas preventing unauthorized users from accessing protected network resources . Technologies used: ACLs Standard, extended, numbered and named ACLs Advanced ACLs

1.48k views • 116 slides

Multipath TCP

1.47k views • 108 slides

CS 4700 / CS 5700 Network Fundamentals

Lecture 11: Transport (UDP, but mostly TCP). CS 4700 / CS 5700 Network Fundamentals. Revised 3 /2/2015. Transport Layer. Function: Demultiplexing of data streams Optional functions: Creating long lived connections Reliable, in-order packet delivery Error detection

1.1k views • 87 slides

CS 4740/6740 Network Security

929 views • 81 slides

Telecommunication Systems and Technologies

785 views • 68 slides

2.5 Reliable Transmission

2.5 Reliable Transmission. Acknowledgements & Timeouts Stop-and-Wait Sliding Window. A link level protocol that wants to deliver frames reliably must somehow recover from those discarded (lost) frames This is usually accomplished using a combination of two mechanisms

776 views • 60 slides

OS Fingerprinting For Fun and Profit

1.09k views • 58 slides

J AVELIN

J AVELIN. Michael D. Myjak Vice President & CTO The Virtual Workshop, Inc. P.O. Box 98 Titusville, FL 32781 <mmyjak@virtualworkshop.com>. Keith Briggs President iMT, Inc. P.O. Box 4380 Mountain View, CA 94040 <keith@imtinc.com>. J AVELIN.

599 views • 45 slides

CS 498 Lecture 16 TCP Implementation in Linux

CS 498 Lecture 16 TCP Implementation in Linux. Jennifer Hou Department of Computer Science University of Illinois at Urbana-Champaign Reading: Chapter 24, The Linux Networking Architecture: Design and Implementation of Network Protocols in the Linux Kernel. Outline.

661 views • 39 slides

Principles of Reliable Data Transfer

Principles of Reliable Data Transfer. Reliable Delivery. Making sure that the packets sent by the sender are correctly and reliably received by the receiver amid network errors, i.e., corrupted/lost packets Can be implemented at LL, NL or TL of the protocol stack. Totally a design choice

630 views • 27 slides

Network Software

Network Software. Communication Protocol Hierarchies Design Issues for the Layers (OSI Model) Connection-Oriented and Connectionless Services Service Primitives The Relationship of Services to Protocols. Protocol Hierarchies.

4.7k views • 27 slides

TCP

TCP. TCP Adaptive Retransmission Algorithm - Original. Theory Estimate RTT Multiply by 2 to allow for variations Practice Use exponential moving average (A = 0.1 to 0.2) Estimate = (A) * measurement + (1- A) * estimate Problem Did not handle variations well

499 views • 26 slides

CSEE W4140 Networking Laboratory

417 views • 24 slides

Off-Path Attacking the Web

Yossi Gilad and Amir Herzberg Computer Science Department, Bar Ilan University. Off-Path Attacking the Web. Oscar: the Off-Path Attacker. Bob, I leave you! Alice. 4.4.4. Off-path Oscar 6.6.6.6. 1.1.1. 6.6.6. 3.3.3. Alice 2.2.2.5. 2.2.2. 5.5.5. Bob 3.3.3.7. Bob,

396 views • 23 slides

High-Level Language Interface

High-Level Language Interface. Chapter 17 S. Dandamudi. Why program in mixed-mode? Focus on C and assembly Overview of compiling mixed-mode programs Calling assembly procedures from C Parameter passing Returning values Preserving registers Globals and externals. Illustrative examples

386 views • 23 slides

SIP Security Mechanisms

SIP Security Mechanisms. Through a secure Software Engineering approach Prajwalan Karanjit pkaranji@cc.hut.fi. Agenda. Introduction Security Issues during phases of SDLC Requirements Engineering System Design Implementation Testing Open Issues. Introduction.

312 views • 21 slides

Net 222: Communications and networks fundamentals ( Practical Part)

Net 222: Communications and networks fundamentals ( Practical Part). Tutorial 4 : Chapter 7 Data & computer communications. Stop-and-Wait ARQ. Simplest flow and error control protocol Data frames and ACK frames are numbered alternately (0,1)

212 views • 20 slides

Introduction to SMPP version 5.0

Introduction to SMPP version 5.0. Presented by: Team 6 UHCL - Capstone Project 2007. Introduction.

662 views • 16 slides

Data Transfer

Data Transfer. Consider transferring an enormous file of L bytes from Host A to B using a MSS of 1460 bytes and a 66 byte header. What is the maximum value of L such that TCP sequence numbers are not exhausted?

325 views • 13 slides

IPsec High Availability

IPsec High Availability. Extensions to IKE & IPsec for Support of High Availability and Load Balancing Solutions Yoav Nir November 2009. Agenda. Problem Statement Proposed Work Item Non Goals Goals Why this should be a WG item. The Problem.

232 views • 13 slides