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Quick Configs - Dynamic VTI IPsec (virtual-template, unnumbered, keyring, isakmp)
 
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This CCIE oriented episode of quick configs goes into configuring a Dynamic Virtual Tunnel Interface (VTI). See http://bit.ly/1VZYkFi for all CCIE notes.
Views: 3368 Ben Pin
Truly Anonymous Credentials Using Modern Cryptography - Matthew Di Ferrante
 
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When using anonymous networks like Tor or I2P, one problem is always how to prevent spam/DoS attacks when you cannot distinguish one entity from another, and hence cannot limit them without either compromising their anonymity by requiring registration of some kind, or requiring captcha-like challenges which are time consuming to implement and usually only a temporary solution at best. Here I introduce a new kind of authentication system based on homomorphic properties of elliptic curve cryptography and zero knowledge proofs called "Linkable Ring Signatures". It allows one to add their public key to a larger group of existing public keys, called a "ring", and sign using the entire "ring" of keys + private key in such a way that no one can tell which private key has signed the message, but can mathematically verify that it was one private key corresponding to one of the public keys in the ring. On top of that, it allows a verifier that only has access to the public keys in the ring to make sure that for any one [message, ring] pair, a private key has only signed it once - duplicate signatures for the same message are detectable. This allows for limiting interactions from any party holding one of these access keys (to say, one message per minute per key), without the party losing any anonymity as their signature is indistinguishable from any other party in the ring. Furthermore, because ring signatures use a cryptographic component called "zero knowledge proofs", signing reveals zero information about the private key - hence no matter how many signatures are generated, it is impossible to use them to try to forge messages or fingerprint/bruteforce the signer key. The proof of this will be shown in the talk. In this talk I will walk through the cryptographic primitives that make this possible, and show a demo service on Tor/I2P that implements this scheme to make an anti-spam anonymous forum.
BLS Signatures and Key Sharing with Crypto Pairs
 
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Demo: https://asecuritysite.com/encryption/js_bls Article: How To Create a General Election With a Single Signature for All Votes: Meet Boneh–Lynn–Shacham (BLS) signatures https://medium.com/asecuritysite-when-bob-met-alice/boneh-lynn-shacham-bls-signatures-d053cf049aa8?source=friends_link&sk=df7813cfce8b424fb958400692df988f
Views: 356 Bill Buchanan OBE
LabMinutes# SEC0026 - Cisco Router Site-to-site (L2L) IPSec IKEv1 VPN with VRF (crypto map & VTI)
 
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more Cisco VPN Video at http://www.labminutes.com/video/sec/vpn The video takes the site-to-site L2L IPSec VPN to the next level by combining what we have learnt from the previous videos with the concept of Virtual Routing Forwarding (VRF). We will look at how you can segregate different type of L2L VPN into their own logical routing domain, while they all share the same physical hardware. Basic understanding of VRF is recommended before viewing this video Topic includes - L2L IPSec VPN with Crypto-map and shared outside interface - L2L IPSec VPN with VTI and shared outside interface - L2L IPSec VPN with VTI and dedicated outside interface
Views: 3769 Lab Minutes
Crypto Maps versus VTI's Part 1
 
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http://members.globalconfig.net/sign-up In this video I cover how to configure a static crypto map on a Cisco IOS router running 12.4T. This is the first part of a comparison between Crypto Map Configurations and VTI configurations.
Views: 8172 Brandon Carroll
5. BLS aggregation by Vitalik Buterin and Justin Drake (Ethereum Foundation)
 
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The Ethereum Sharding Meeting #2 - Berlin 5. BLS aggregation by Vitalik Buterin and Justin Drake (Ethereum Foundation) Resources: https://notes.ethereum.org/s/B1-7aivmX --- Video: Anton Tal @antontal Audio: Matteo Tambussi @matlemad Producer: Chris Hobcroft @chrishobcroft Executive Producer: Doug Petkanics @petkanics For @livepeertv on behalf of @LivepeerOrg
Views: 478 Ethereum Foundation
DFINITY: Scalable consensus with threshold groups - BPASE '18
 
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DFINITY: Scalable consensus with threshold groups - Timo Hanke BPASE '18, January 24-26th 2018, Stanford University Stanford Cyber Initiative Slides and a full listing of talks are available at https://cyber.stanford.edu/bpase18
Views: 3617 Cyber Initiative
MPLS Filtering (advertised, received, host-routes, prefix-suppression)
 
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This CCIE oriented episode of quick configs goes into configuring filtering for MPLS. See http://bit.ly/1VZYkFi for all CCIE notes.
Views: 409 Ben Pin
MicroNugget: How to Build IPsec Site-to-Site Tunnels Using VTIs
 
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Not a subscriber? Start your free week. https://cbt.gg/2CsnIRh CBT Nuggets trainer Keith Barker explains how to build and verify an IPSec site-to-site tunnel using virtual tunnel interfaces.
Views: 10266 CBT Nuggets
3.11 FlexVPN - Flex Server w/NGE.  Design, VRFs, and device enrollment
 
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In this kickoff installment of the flexvpn server demonstation, we review the cryptographic suite selection, the routing design, and enroll our devices with Elliptic Curve Certificates.
Views: 375 Steven Mcnutt
GNS3 Labs: DMVPN, IPsec and NAT across BGP Internet routers: Answers Part 7
 
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Can you complete this DMVPN, IPsec, NAT& BGP lab? GNS3 Topology: https://goo.gl/udfNPL Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. ! ====================================================== ! Code created by David Bombal ! ! Find us at www.davidbombal.com ! ! ====================================================== ! CONFIG FOR: C1 ! ! ====================================================== ! HUB SITE ! crypto isakmp policy 10 hash md5 authentication pre-share encryption 3des group 2 lifetime 86400 ! crypto isakmp key cisco123 address 0.0.0.0 0.0.0.0 ! crypto ipsec transform-set myset esp-3des esp-md5-hmac mode transport ! crypto ipsec profile cisco set transform-set myset set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! interface Tunnel 111 description ****** DMVPN GRE Tunnel ****** ip address 192.168.1.1 255.255.255.0 bandwidth 1000 delay 1000 ip nhrp holdtime 360 ip nhrp network-id 100000 ip nhrp authentication cisco ip mtu 1400 ip tcp adjust-mss 1360 ip nhrp map multicast dynamic tunnel source G0/1 tunnel mode gre multipoint tunnel key 100000 tunnel protection ipsec profile cisco no ip split-horizon eigrp 100 no ip next-hop-self eigrp 100 ! router eigrp 100 network 192.168.1.1 0.0.0.0 network 10.0.0.0 0.255.255.255 no auto-summary !====================================================== ! Code created by David Bombal ! ! Find us at www.davidbombal.com ! ! ====================================================== ! CONFIG FOR: C2 ! ! ====================================================== ! SPOKE SITE ! crypto isakmp policy 10 hash md5 authentication pre-share encryption 3des group 2 lifetime 86400 ! crypto isakmp key cisco123 address 0.0.0.0 0.0.0.0 ! crypto ipsec transform-set myset esp-3des esp-md5-hmac mode transport ! crypto ipsec profile cisco set transform-set myset set security-association lifetime seconds 86400 set security-association lifetime kilobytes 4608000 ! interface Tunnel 111 description ****** DMVPN GRE Tunnel ****** ip address 192.168.1.2 255.255.255.0 bandwidth 1000 delay 1000 ip nhrp holdtime 360 ip nhrp network-id 100000 ip nhrp authentication cisco ip mtu 1400 ip tcp adjust-mss 1360 ip nhrp nhs 192.168.1.1 ip nhrp map multicast 8.8.3.2 ip nhrp map 192.168.1.1 8.8.3.2 tunnel source G0/1 tunnel mode gre multipoint tunnel key 100000 tunnel protection ipsec profile cisco ! router eigrp 100 network 192.168.1.2 0.0.0.0 network 10.0.0.0 0.255.255.255 no auto-summary
Views: 743 David Bombal
DMVPN vs GETVPN Comparison
 
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Click here to subscribe: https://www.youtube.com/channel/UCu4SrOE1vlvOEQh58Ej14tg?sub_confirmation=1 DMVPN and GETVPN are the Wide Area Network VPN technologies.Network Architect and CCDE Trainer Orhan Ergun explains the most important parameters when you compare these technologies from the network design point of view.
Views: 3591 Orhan Ergun
IPSEC BETWEEN ASA USING VTI
 
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(VTI) IPSEC_VPN IN ASA USING (VTI)
Views: 926 IRSHAD ALAM
IKEV2 DMVPN
 
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IKEV2 DMVPN
Views: 192 Asen Borisov
IPSec Site-to-Site VPNs w/Static Virtual Tunnel Interfaces (SVTI): IKEv1 & IKEv2
 
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The following video tutorial takes a deep dive into Static Virtual Tunnel Interface (SVTI) interfaces along with both IKEv1 and IKEv2. We explore all the similarities and differences between the configuration and operation of SVTIs with IKEv1 and IKEv2. The IKEv1 scenario connects two offices together over the Internet and the IKEv2 scenario connects up two offices over an MPLS L3 VPN architecture. Thanks to some typos we also get to troubleshoot what happens when you use a route-map with the wrong name, what happens when a route is learned via eBGP and you want it to be learned via EIGRP (AD concerns!), and when you enter in IP addresses wrong (good troubleshooting)! In each scenario the configuration for either EIGRP or OSPF is done so you can see how to run either routing protocol over your SVTI. The next video will show the same thing, but with crypto-maps! Enjoy!
Views: 11938 Travis Bonfigli
Treinamento Redes - CISCO GETVPN - Parte 01 - LAB 01
 
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LAB 01 da primeira parte do Treinamento de Tecnologias de Rede sobre CISCO GETVPN. Veja passo a passo como configurar o KEY Server e os Group Members, assim como a verificação da efetividade da criptografia.
Views: 200 PINETech
What Is 'Proof Of Stake' And Why Is It Important? | Cédric Waldburger
 
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Robert and I took the train back to Zurich and so I had a bit of time to pick his brain on a number of topics around consensus mechanisms. We talked about how DFINITY deals with some of the challenges present in current blockchains. If you're new here: I'm Cédric Waldburger, investor, founder and crypto enthusiast. Welcome to Episode 57 of my 91 vlog experiment :) I’m passionate about startups. Having founded my first company at age 14, I’ve built various tech companies, invested in ten and currently work on a productivity startup, a computer vision company and a cryptocurrency initiative. To spend as much time as possible with my companies, which are spread across two continents, I gave up on having an apartment in 2016 and have since lived out of a bag with 64 things. Follow me: Blog: http://www.cedricwaldburger.com YouTube: http://www.youtube.com/cedricwaldburger Instagram: http://www.instagram.com/cedricwaldburger Facebook (private): http://www.facebook.com/cediwaldburger Twitter: http://www.twitter.com/cediwaldburger Read this episode: https://cedricwaldburger.com/2018/06/15/what-is-proof-of-stake/
Views: 133 Cédric Waldburger
Configuring Static VTI Interfaces for IPsec Site-to-Site VPN
 
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http://members.globalconfig.net/sign-up In this video I cover part two of my comparison between the Crypto Map configuration and the VTI configuration for IPsec site-to-site VPN's. In the video I use two cisco routers and a eigrp to route secured traffic between a couple of loopback interfaces.
Views: 10968 Brandon Carroll
Intervalue ICO AMA with CryptoArnie | The Underdog 4.0 DAG Project Rivaling Hashgraph, IOTA & Seele
 
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Website: http://www.inve.one/ Intervalue Telegram: https://t.me/joinchat/HFJWYxCcv_bhLzTrdfzmGQ CryptoArnie Telegram: https://t.me/CryptoArniePublic What is InterValue? The InterValue project focuses on the core technology of Blockchain infrastructure and platform level. The goal is to build the underlying infrastructure covering all fields at the ecological level, which conquers the key technical problems. Main Technological Innovation (1)In the communication layer of the underlying P2P network node: The original anonymous P2P communication network is realized by combining the existing Tor-based anonymous communication network, the Blockchain-based distributed VPN and the advantages of the Blockchain-based distributed content sharing network. The protocol of node anonymity access is designed, and the private encrypted communication protocol is realized. These two protocols greatly enhance the anonymity of nodes in the underlying communication network and ensure that the communication between nodes is hard to be traced and cracked. (2)At the underlying data structure Layer A new data structure with an enhanced directed acyclic graph (HashNet) is adopted, which greatly reduces the storage space required by the nodes and improves the efficiency and security of the underlying data storage. (3)At the consensus mechanism Layer We designed three different consensus mechanism: a HashNet based consensus mechanism, BA-VRF consensus mechanism, basic DAG consensus mechanism. A consensus mechanism based on HashNet to enhance the consensus of DAG and BA-VRF consensus mechanism for notary selection is presented. In project version 1.0, due to the fact that HashNet-based DAG consensus is more difficult to implement, we first implement a two-Layer consensus mechanism that combines DAG consensus with BA-VRF. These consensuses all support high transaction concurrency, fast transaction confirmation speed, and building eco-systems for different application scenarios. (4)At the Layer of anti-quantum attack New anti-quantum algorithms are adopted, which replaces the existing SHA series algorithm with the Keccak-512 hash algorithm, and replaces the ECDSA signature algorithm with an integer lattice-based NTRUsign signature algorithm. These algorithms reduce the threat which brings from the quantum computing development and gradual popularization of a quantum computer. (5)At the Layer of anonymous transaction Combined with the characteristics of cryptocurrency such as Monroe and ZCash, the zero-knowledge proof and ring signature are used to design transaction anonymity and privacy protection method with high effective cost ratio and excellent security to meet privacy requirements of different application scenarios. (6)At the Layer of smart contracts We adopt the Turing comprehensive contract with fair distribution mechanism and support the issuance of third-party assets, which can take place in the form of the public Blockchain, permission (private) Blockchain, consortium (hybrid) Blockchain to the actual application scenario. (7)At the Layer of cross-link communication and multi-chain fusion The use of relay chain technology to cross-chain communication and multi-chain fusion function module as a single layer overlay to achieve, not only can maintain the independence of cross-chain operation, but also reuse InterValue basis chain Various functions. (8)At the ecologically motivated Layer Various Token allocation tools and methods are used in combination and support for double-layer mining for miners' incentives. (9)At the industry application level The development of JSON-RPC industry common interfaces, such as circulation payment, data transmission, data search, and contract invocation, supports various applications at the upper level.
Views: 2469 Crypto Arnie
Introduction to Threshold Signatures in 9 Minutes
 
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This video introduces the cryptographic use of Threshold Signatures with multiparty computation (MPC) to materially increase the security of conventional single signature and multisig cryptocurrency wallets.
Views: 104 Sepior ApS
Making Blockchains more Useful for Business
 
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Dan Boneh, Professor, Stanford University https://simons.berkeley.edu/talks/making-blockchains-more-useful-business New Directions in Societal Networks
Views: 900 Simons Institute
Panel 2 - Policy, Law, and Technology in the Current Crypto Wars
 
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Panel 2 - Policy, Law, and Technology in the Current Crypto Wars November 2, 2016 Co-sponsored by the Stanford Center for Internet and Society, the Stanford Computer Science Department, and the Stanford Cyber Initiative. Professor Dan Boneh and several Ph.D. students from the Stanford Computer Science and Electrical Engineering Departments presented their latest research on selected topics in applied cryptography. Their presentations will include: · Professor Boneh on communication systems that hide metadata · Henry Corrigan-Gibbs on private data collection · Valeria Nikolaenko on verifiable warrants https://cyberlaw.stanford.edu/events/policy-law-and-technology-current-crypto-wars
Breaking CISCO password type 7 without any tool (D-18)
 
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Why CISCO password type 7 is not good, decryption of it without any tools
Views: 3971 Tech Helping Hands
GNS3 Labs: DMVPN, IPsec and NAT across BGP Internet routers: Answers Part 3
 
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Can you complete this DMVPN, IPsec, NAT& BGP lab? GNS3 Topology: https://goo.gl/udfNPL Get the VPN Config Generator and all my videos as part of a subscription here: https://goo.gl/mJMZGW Cisco documentation: https://goo.gl/hjmdFR For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more. IPsec Overview: A secure network starts with a strong security policy that defines the freedom of access to information and dictates the deployment of security in the network. Cisco Systems offers many technology solutions for building a custom security solution for Internet, extranet, intranet, and remote access networks. These scalable solutions seamlessly interoperate to deploy enterprise-wide network security. Cisco System's IPsec delivers a key technology component for providing a total security solution. Cisco's IPsec offering provides privacy, integrity, and authenticity for transmitting sensitive information over the Internet. IPsec provides secure tunnels between two peers, such as two routers. You define which packets are considered sensitive and should be sent through these secure tunnels, and you define the parameters which should be used to protect these sensitive packets, by specifying characteristics of these tunnels. Then, when the IPsec peer sees such a sensitive packet, it sets up the appropriate secure tunnel and sends the packet through the tunnel to the remote peer. More accurately, these tunnels are sets of security associations (SAs) that are established between two IPsec peers. The security associations define which protocols and algorithms should be applied to sensitive packets, and also specify the keying material to be used by the two peers. Security associations are unidirectional and are established per security protocol (AH or ESP). With IPsec you define what traffic should be protected between two IPsec peers by configuring access lists and applying these access lists to interfaces by way of crypto map sets. Therefore, traffic can be selected based on source and destination address, and optionally Layer 4 protocol, and port. The access lists used for IPsec only determine which traffic should be protected by IPsec, not which traffic should be blocked or permitted through the interface. Separate access lists define blocking and permitting at the interface. A crypto map set can contain multiple entries, each with a different access list. The crypto map entries are searched in order—the router attempts to match the packet to the access list specified in that entry. It is good practice to place the most important crypto map entries at the top of the list. When a packet matches a permit entry in a particular access list, and the corresponding crypto map entry is tagged as cisco, then CET is triggered, and connections are established if necessary. If the crypto map entry is tagged as ipsec-isakmp, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, IPsec uses the Internet Key Exchange protocol (IKE) to negotiate with the remote peer to set up the necessary IPsec security associations on behalf of the data flow. The negotiation uses information specified in the crypto map entry as well as the data flow information from the specific access list entry. If the crypto map entry is tagged as ipsec-manual, IPsec is triggered. If no security association exists that IPsec can use to protect this traffic to the peer, the traffic is dropped. In this case, the security associations are installed via the configuration, without the intervention of IKE. If the security associations did not exist, IPsec did not have all of the necessary pieces configured. Once established, the set of security associations (outbound, to the peer) is then applied to the triggering packet as well as to subsequent applicable packets as those packets exit the router. Applicable packets are packets that match the same access list criteria that the original packet matched. For example, all applicable packets could be encrypted before being forwarded to the remote peer. The corresponding inbound security associations are used when processing the incoming traffic from that peer. If IKE is used to establish the security associations, the security associations will have lifetimes set so that they periodically expire and require renegotiation, thus providing an additional level of security. Multiple IPsec tunnels can exist between two peers to secure different data streams, with each tunnel using a separate set of security associations. For example, some data streams might be just authenticated while other data streams must both be encrypted and authenticated. Go here for more: https://www.cisco.com/c/en/us/td/docs/net_mgmt/vpn_solutions_center/2-0/ip_security/provisioning/guide/IPsecPG1.html
Views: 1029 David Bombal
LabMinutes# SEC0020 - Cisco Router Easy VPN (EZVPN) with Dynamic Virtual Tunnel Interface (DVTI)
 
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more Cisco VPN Video at http://www.labminutes.com/video/sec/vpn The video desmonstrates the configuration of Easy VPN (EZVPN) using Dynamic Virtual Tunnel Interface (DVTI) on Cisco routers and explains its benefit over the conventional EZVPN with 'crypto map' or tunnel interface with GRE. Here we introduce the concept of Virtual-Template. The second half of the video shows example of additional features that you can implement with VTI using QoS and multicasting. Topic includes - DVTI with EZVPN - Interface Virtual-Template - QoS on DVTI - Multicast on DVIT
Views: 4247 Lab Minutes
New Developments in Cryptocurrencies and Blockchain Technologies
 
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Virtual currency has the potential to revolutionize the way we make payments, but using these digital assets requires special data protection. Join Professor Dan Boneh as he discusses new developments in cryptocurrency and computer security and analyzes new systems that strengthen blockchain capabilities. Hear more from Dan Boneh in our online cyber security programs: https://stanford.io/2nD5rXR
Views: 2070 stanfordonline
LabMinutes# SEC0025 - Cisco Router Site-to-site (L2L) IPSec IKEv1 VPN with Static VTI
 
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more Cisco VPN Video at http://www.labminutes.com/video/sec/vpn The video walks you through configuring site-to-site (L2L) IPSec VPN tunnel on Cisco routers using static Virtual Tunnel Interface (VTI). We will demonstrate VTI ability to support more than just unicast traffic, and how it offers many benefits similar to GRE tunnel but without the extra GRE overhead. In this lab, EIGRP is used as an example. In addition, we will point out VTI limitation to support non-IP protocol, in which case, we need to resort to GRE. MPLS is a good example and what we use to demonstrate in this lab. Topic includes - Static VTI - Tunnel Interface IP Unnumbered - MPLS - GRE
Views: 1871 Lab Minutes
LabMinutes# SEC0251 - FlexVPN Introduction to IKEv2
 
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Full videos are available at http://www.labminutes.com/store/cisco-flexvpn-video-bundle
Views: 1526 Lab Minutes
Coinscrum {minicon} DFINITY CTO Dominic Williams (Slides linked below)
 
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Coinscrum {mini-con} : w/ DFINITY Chief Scientist Dominic Williams Click here to follow presentation slides https://www.slideshare.net/secret/CSEeuZc8m5HnLp http://www.coinscrum.com/ Recorded by Proof of Work Media London 2017 Follow Coinscrum: https://twitter.com/coinscrum Tip BTC: 1EJDArq3Ye1wi9gdSC1hgFuZYkK15DVuQn
Views: 171 Coinscrum
Programmable ASICs: Flexibility at Wire Speed on TechWiseTV
 
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Register for the workshop: http://cs.co/9004D1HMs Check out the other episodes in our series on network programmability: http://cs.co/90088WOLw Custom hardware not only matters, it’s the future of software-defined networking. Programmable application-specific integrated circuits (ASIC) deliver software flexibility for today’s high-powered networks. Learn more about these innovations at the heart of today’s most sophisticated network devices? This episode of TechWiseTV discusses all things ASICs, with guests Peter Jones, Principal Engineer for Cisco Unified Access Data Plane (UADP), and Distinguished System Engineer, Dave Zacks. Episode includes: • How modern ASICs are designed, tested, and manufactured • Why miniaturization increases performance as it lowers costs • What makes ASICs programmable, and how are they able to support protocols that haven’t been invented yet • A look at the new UADP 2.0, and what it brings to the Cisco Catalyst 9000 Series and Cisco Software Defined Access
Views: 1538 Cisco
Enterprise Connectivity to GCP using Partners (Cloud Next '18)
 
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A selection of partners will highlight their networking platforms that help GCP customers extend their networks into GCP and other clouds. Event schedule → http://g.co/next18 Watch more Infrastructure & Operations sessions here → http://bit.ly/2uEykpQ Next ‘18 All Sessions playlist → http://bit.ly/Allsessions Subscribe to the Google Cloud channel! → http://bit.ly/NextSub
22. Guest Lecture by MIT IS&T
 
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MIT 6.858 Computer Systems Security, Fall 2014 View the complete course: http://ocw.mit.edu/6-858F14 Instructor: Mark Silis, David LaPorte In this lecture, Mark Silis and David LaPorte talk about information security and their roles at MIT IS&T. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 3789 MIT OpenCourseWare
Free Airdrop VLR 250 Token|| Free Token Airdrop Valorem Token
 
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Join VLR Token Link : https://goo.gl/XNRwNE