Search results “Cryptographic hash function pptp”
16 Cryptography Algorithms and Protocols
Video 16 - "Cryptography Algorithms and Protocols" - This second nugget of the Cryptography domain lays out hashing concepts and algorithms like MD5 and SHA. Basic algorithms and encryption concepts are explored including: DES, 3DES, RSA, PGP, Elliptic curve (ECC), AES/AES256, One time pad, SSL/TLS, S/MIME, and PPTP/L2TP.
Views: 12138 SwampTarts
26 Cryptography Domain Update
Video 26 - UPDATE regarding Cryptography Algorithms and Protocols, plus Cryptography Domain. Cryptography domain lays out hashing concepts and algorithms like MD5 and SHA. Basic algorithms and encryption concepts are explored including: DES, 3DES, RSA, PGP, Elliptic curve (ECC), AES/AES256, One time pad, SSL/TLS, S/MIME, and PPTP/L2TP. Cryptography domain lays out the core concepts of a Public Key Infrastructure (PKI).
Views: 110 SwampTarts
CCNA Core Concepts - Chapter 24 (Part 1 of 3)
Chapter 24 of the CCNA Core Concepts curriculum. This video goes over virtual private networks (VPN), VPN benefits and drawbacks, site-to-site VPN, remote-access VPN, Secure Socket Layer (SSL) VPN, IPSec framework, IPSec protocol, encryption, authentication, Diffie-Helman (DH), Data Encryption Standard (DES), Triple DES (3DES), Advanced Encryption Standard (AES), Message Digest 5 (MD5), Secure Hash Algorithm 1 (SHA1), Authentication Header (AH), and Encapsulating Security Payload (ESP).
Views: 3206 Talton Walker
DEF CON 20 - Alberto Garcia Illera - How to Hack All the Transport Networks of a Country
How to Hack All the Transport Networks of a Country Alberto García Illera The presentation is about a real black hacking act against the transport network of a country. It can be extrapolated to any other country. We will show how to get full access to the entire transport network. Manipulating parameters to get free tickets, getting control of the ticket machines, getting clients CC dumps, hooking internal processes to get the client info, pivoting between machines, encapsulating all the traffic to bypass the firewalls, etcetera. We will show a lot of photos, videos, source code and presentations of the real environment and the skills used to obtain all the information. We will show how combining social engineering and technical skills can be used as a deadly weapon. Alberto García Illera is a 24 year old passionate about hacking and especially for social engineering. He studied mathematics and computer systems in Spain. He has worked several years as a professional pentester. He has spoken in several seminars teaching hacking techniques to help big companies like Microsoft, the Spanish government or the Spanish Police's Cyberterrorism department. He is currently making a study about cryptographic hash functions applied to IT security.
Views: 1948 DEFCONConference
Padding (cryptography)
In cryptography, padding refers to a number of distinct practices. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 1360 Audiopedia
Point-to-Point Tunneling Protocol
The Point-to-Point Tunneling Protocol (PPTP) is a method for implementing virtual private networks. PPTP uses a control channel over TCP and a GRE tunnel operating to encapsulate PPP packets. The PPTP specification does not describe encryption or authentication features and relies on the Point-to-Point Protocol being tunneled to implement security functionality. However, the most common PPTP implementation shipping with the Microsoft Windows product families implements various levels of authentication and encryption natively as standard features of the Windows PPTP stack. The intended use of this protocol is to provide security levels and remote access levels comparable with typical VPN products. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 5783 Audiopedia
Mikrotik 010 Mikrotik VPN tunnel (IPSec)
VPN Configuration (IPSec) Tutorial HO Network Details: WAN IP: (Net:, IP used at ISP side) LAN IP: (Net: BR Network Details: WAN IP: (Net:, IP used at ISP side) LAN IP: (Net: N. B : IP used for ONM purpose. Target: Inter LAN Access over internet Target is to reach the local IP block to the other side of the router. ------- Pre-shared key: 12345 (must be same in both router) Phase-1 (Mikrotik default) Hash Algorithm = md5 Encryption Algorithm = 3des DH Group = modp1024 lifetime = 1day Phase-2 (Mikrotik default) Auth Algorithm = sha1 Encryption Algorithm = 3des PFS Group = modp1024 lifetime = 30 min
Views: 317 Md Shamim Jahan
How To Decrypt WPA2 with Wireshark
Packet analysis is tricky enough without layering on WiFi. First you need to know if you have a WiFi card that can capture the WiFi radio header, then you have to figure out if you can capture in promiscuous mode, then you need to understand if the wireless network has client isolation or similar configurations. Whew… That where having a specifically designed Wifi tool helps. In this example I used a Fluke Networks One Touch to capture some packets. Capturing them was the easy part. Now I have to decrypt them. I chose to use Wireshark and want to share with you how to decrypt a trace file when the client is using WPA2 encryption. As I said in the video, the key (no pun) here is to start your capture before the client authenticates with the access point. Enjoy
Views: 55827 The Technology Firm
Denial of Service Attacks (Part 5): The Smurf Attack
This chalk talk video, which is part of a broader series on Denial-of-Service attacks, describes an old technique known as the Smurf attack. Fortunately, most modern systems are patched against the Smurf attack, but it is still interesting from a broader historical perspective. For a comprehensive list of chalk talks, please visit http://go.sourcefire.com/sourcefirechalktalks. Video by Dr. Zulfikar Ramzan, Sourcefire's Chief Scientist in the Cloud Technology Group.
Views: 30215 Sourcefire
MikroTik L2TP/IPSec PSK
/ip pool add name=l2tp-pool ranges= /ppp profile set default local-address= remote-address=l2tp-pool /ppp secret add name=l2tp-test password=test123456 /ip ipsec proposal set [ find default=yes ] enc-algorithms=3des,aes-128,aes-192,aes-256 /ip ipsec peer add generate-policy=yes hash-algorithm=sha1 nat-traversal=yes secret=test123456
Views: 3257 Mik Sys
DD-WRT router OpenVPN setup tutorial with ExpressVPN
This tutorial walks you through the steps for setting up OpenVPN manual configurations on your DD-WRT router. To complete the setup process, you’ll need a DD-WRT router with at least 8 Megabytes of flash, as well as an ExpressVPN subscription. Routers with 4 Megabytes of flash should work as well, but ExpressVPN recommends a minimum of 8 MB. At one point, will be asked to input text in the additional config box, which you can copy from below: persist-key persist-tun fragment 1300 mssfix 1450 keysize 256 To see written versions of the DD-WRT OpenVPN instructions, check out: https://www.expressvpn.com/support/vpn-setup/manual-config-for-dd-wrt-router-with-openvpn/?utm_source=youtube&utm_medium=video&utm_campaign=ddwrt_openvpn_video&utm_content=video_description If you want to buy and ExpressVPN subscription, please visit: https://www.expressvpn.com/support/vpn-setup/manual-config-for-dd-wrt-router-with-openvpn/?utm_source=youtube&utm_medium=video&utm_campaign=ddwrt_openvpn_video&utm_content=video_description ExpressVPN is a virtual private network service that allows you to amplify the entire internet. Get around censorship, secure your internet connection, and browse anonymously. An ExpressVPN subscription gets you access to 140+ server locations in more than 90 countries. And with apps for all your devices, you can take ExpressVPN with you wherever you go!
Views: 24687 ExpressVPN
Telnet and SSH - CompTIA Security+ SY0-401: 1.4
Security+ Training Course Index: http://professormesser.link/sy0401 Professor Messer’s Course Notes: http://professormesser.link/sy0401cn Frequently Asked Questions: http://professormesser.link/faq - - - - - Terminal access to remote devices is an important part of network and security management. In this video, you’ll learn how to use Telnet and SSH to manage your network infrastructure. - - - - - Download entire video course: http://professormesser.link/401adyt Get the course on MP3 audio: http://professormesser.link/401vdyt Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 73175 Professor Messer
DEF CON 22 - Grant Bugher - Detecting Bluetooth Surveillance Systems
Slides Here: https://www.defcon.org/images/defcon-22/dc-22-presentations/Bugher/DEFCON-22-Grant-Bugher-Detecting-Bluetooth-Surveillance-Systems-Updated.pdf Detecting Bluetooth Surveillance Systems Grant Bugher PERIMETER GRID Departments of Transportation around the United States have deployed "little white boxes" -- Bluetooth detectors used to monitor traffic speeds and activity. While they're supposedly anonymous, they detect a nearly-unique ID from every car, phone, and PC that passes by. In this presentation, I explore the documentation on these surveillance systems and their capabilities, then build a Bluetooth detector, analyzer, and spoofer with less than $200 of open-source hardware and software. Finally, I turn my own surveillance system on the DOT's and try to detect and map the detectors. Grant Bugher has been hacking since the early 90’s and working professionally in information security for the last 9 years. He is currently a security architect for a cloud computing provider, and has previously been a program manager and software engineer on a variety of widely-used developer tools and platforms. Grant is a prior speaker at BlackHat USA and a regular DefCon attendee since DefCon 16. Most of his research and work is on cloud compute and storage platforms, application security, and detecting attacks against web-scale applications. Twitter: @fishsupreme Web: http://perimetergrid.com
Views: 7978 DEFCONConference
DEF CON 13 - David Hulton, The Next Generation of Cryptanalytic Hardware
David Hulton, The Next Generation of Cryptanalytic Hardware Encryption is simply the act of obfuscating something to the point that it would take too much time or money for an attacker to recover it. Many algorithms have time after time failed due to Moore's law or large budgets or resources (e.g. distributed.net). There have been many articles published on cracking crypto using specialized hardware, but many were never fully regarded as being practical attacks. Slowly FPGAs (Field Programmable Gate Arrays) have become affordable to consumers and advanced enough to implement some of the conventional software attacks extremely efficiently in hardware. The result is performance up to hundreds of times faster than a modern PC. This presentation will provide a walk through on how FPGAs work, review their past applications with crypto cracking, present basic tips and pointers to developing a fast and efficient crypto cracking design, discuss overclocking FPGAs, and analyze the future growth of FPGA hardware and it's relation to current crypto ciphers. Then, a new open source DES cracking engine will be released and demonstrated which is able to crack windows Lanman and NTLM passwords at a rate over 600,000,000 crypts per second on a single low-cost Virtex-4 LX25 FPGA and provide brute-force performance comparable to lookups on a hard-drive based rainbowtable attack. David Hulton is one of the founding members of Pico Computing, Inc., a manufacturer of compact embedded FPGA computers and dedicated to developing revolutionary open source applications for FPGA systems. He is also one of the founding members of Dachb0den Research Labs, a non-profit security research think-tank, is currently the Chairman of ToorCon Information Security Conference and has helped start many of the security and unix oriented meetings in San Diego, CA.
Views: 502 DEFCONConference
DEF CON 22 - Kenneth White and Matthew Green - The Open Crypto Audit Project
Slides here: https://defcon.org/images/defcon-22/dc-22-presentations/White-Green/DEFCON-22-Kenneth-White-and-Matthew-Green-The-Open-Crypto-Audit-Project-Updated.pdf The Open Crypto Audit Project Kenneth White CO-FOUNDER, OPEN CRYPTO AUDIT PROJECT Matthew Green RESEARCH PROFESSOR, JOHNS HOPKINS UNIVERSITY Join us for the story of the origins and history of the Open Crypto Audit Project (OCAP). OCAP is a community-driven global initiative which grew out of the first comprehensive public audit and cryptanalysis of the widely used encryption software TrueCrypt®. Our charter is to provide technical assistance to free and open source software projects in the public interest. We serve primarily as a coordinator for volunteers and as a funding mechanism for technical experts in security, software engineering, and cryptography. We conduct analysis and research on FOSS and other widely software, and provide highly specialized technical assistance, analysis and research on free and open source software. This talk will present how we audited TrueCrypt, detailing both the Phase I security assessment, and the Phase II cryptanalysis. Looking forward, in light of GotoFail and HeartBleed, we will discuss future plans for our next audit projects of other open source critical infrastructure. Kenneth White is a co-founder of the CBX Group, and formerly principal scientist and senior security R&D engineer at Social & Scientific Systems. His work focuses on cloud security, machine learning, and distributed database architecture. At SSS, White led the Biomedical Informatics team that designed and runs the operations center for the largest clinical trial network in the world, with research centers in over 100 countries. Together with Matthew Green, White co-founded the TrueCrypt audit project, a community-driven initiative to conduct the first comprehensive cryptanalysis and public security audit of the widely used TrueCrypt encryption software. White holds a MEd from Harvard and is a PhD candidate in neuroscience and cognitive science, with research focusing on expert systems, real-time classification and machine learning. He is a technical reviewer for the Software Engineering Institute, and publishes and speaks frequently on computational neuroscience, signal processing, and security engineering. Twitter: @kennwhite Matthew D. Green, PhD is a professor of computer science at Johns Hopkins University. He teaches applied cryptography and builds secure systems. Green trained under Susan Hohenberger and Avi Rubin, and his research includes techniques for privacy-enhanced information storage, anonymous payment systems, and bilinear map-based cryptography. Green formerly served as a senior research staff member at AT&T Labs. Together with Kenneth White, he co-founded the TrueCrypt audit project, a community-driven initiative to conduct the first comprehensive cryptanalysis and public security audit of the widely used TrueCrypt encryption software. He blogs at Cryptography Engineering, and talks about cryptography and privacy. Twitter: @matthew_d_green Web: https://opencryptoaudit.org/people
Views: 3398 DEFCONConference
Citizenfour Q A Session @debconf
About DebConf DebConf is the annual Debian developers meeting, an event filled with discussions, workshops and coding parties – all of them highly technical in nature. DebConf15, the 16th Debian Conference, will be held from the 15th to the 22nd of August 2015 at Heidelberg International youth hostel in Heidelberg, Germany.
Views: 447 Jalal Al-Haj