PPT-12 – IP, NAT , ICMP, IPv6

Network Layer 4 1 IP Fragmentation amp Reassembly network links have MTU maxtransfer size largest possible link layer frame different link types different MTUs large IP datagram divided fragmented within net. Types | C opy right 1989 - 2012 LogMa trix Inc Page 1 ICMP Message Types in Response to SNMP Requests This document describes the ICMP messages types and responses to SNMP traffic. This informatio Network Protocols. Overview for Network Forensics. Focus of this presentation. Protocols. With a few anecdotes, how-to-dos and previews thrown in.. Network Protocols: Layering. Complexity of networking leads to layered architectures.. Idle Scanning. by Demetris Papapetrou. Page . . . 2. Contents. Introduction to TCP/IP Networks. Port Scanning Techniques. Idle Scanning. Advanced Idle Scanning. Revealing Trust Relationships. Page . Prefixing/Encap/Translation (PET). draft-cui-softwire-pet-01. draft-cui-softwire-pet64-00. Yong Cui, Mingwei Xu, Shengling Wang, . Jianping Wu, Xing Li, Chris Metz, etc.. CERNET, CISCO. Nov. 2009. Motivation: Diminish the disadvantage of translation. Version Date OF1.0 Dec2009 12elds(Ethernet,TCP/IPv4) OF1.1 Feb2011 15elds(MPLS,inter-tablemetadata) OF1.2 Dec2011 36elds(ARP,ICMP,IPv6,etc.) OF1.3 Jun2012 40elds OF1.4 Oct2013 41elds Figure1:P4is Lee Howard. Strategy Problem. Shall We Play a Game?. Name of the Game is “When Do I Add IPv6?”. Object: Maximize profit, minimize cost. ISP: soon—IPv6-only is the only way to minimize cost. Content: as late as possible without losing eyeballs. Geoff Huston. APNIC Labs. July 2016. What are we looking at:. How “reliable” are IPv6 connections?. How “fast” are IPv6 connections?. Do all TCP connection attempts succeed?. Is V6 slower than V4?. ICMP Public Meeting February 18 th , 2011 Overview The environmental legacy of our industrial sites, and the demands of a growing and vibrant urban community create a complex set of issues to balance as we invest in programs that seek to restore our ecosystems and meet the increasing demands for open space, recreation, and public access. Michaelson. . APNICLabs. October 2012. What are the questions?. What proportion of DNS resolvers are . capable of performing DNS queries using IPv6?. What proportion of users are using . IPv6-capable DNS . George Michaelson, APNIC. how to measure “the Internet”. What do we mean when we say . “we’re measuring the Internet?”. Number of hosts. Number of routes. Number of active routing entities. Geoff Huston. APNIC. What’s the problem?. What’s the problem?. IEPG presentation – November 2013. So what?. Packet Networks like variable packet sizes. The range of packet sizes supported in a network represents a set of engineering trade-offs:. Network Operations Manager. How to Setup an IPv6 Tunnel Using a Public Tunnel Broker and Windows. What is an IPv6 Tunnel?. IPv6 encapsulated in another protocol. Usually IPv4 but other protocols work too. Cinestar. Metropolis, Frankfurt, Germany. IPv6 Golden Networks. Jeroen Massar, . SixXS. jeroen. @sixxs.net. An I.P.V. . SixXS. Overview. SixXS. SixXS. is a small hobby project, grown a bit big, that provides a service for ISPs for . IP Main Jobs. Addressing Hosts. Routing. IPv4. Current . : RFC-791 (1981). Prev. : RFC-760 (1980). Range. : 0.0.0.0 : 255.255.255.255. Supports. : 2^32 || 4.3 * 10 ^ 9. NAT (Network Address Translation).