N2N: a Layer Two Peer-To-Peer VPN
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Flexgw Ipsec VPN Image User Guide
FlexGW IPsec VPN Image User Guide Zhuyun Information Technology Co.,Ltd. www.cloudcare.cn Zhuyun Information Technology Co.,Ltd. Contents .......................................................................................................... .................................................................................................................. 1 Introduction 4 1.1 Software Compon.e..n..t.s................................................................................................................... 4 1.2 Login Description ................................................................................................................... 4 1.3 Function Description ....................................................................................................5 1.4 Typical Scenarios Des..c..r..i.p..t..i.o..n......................................................................................................5 1.5 Program Description .................................................................................6 1.6 Software Operation Command Summary ............................... 7 ............................................................................................................... 2 IPSec Site-to-Site VPN User Guide (VPC network scenario) 8 2.1 Start IPSec VPN.s..e..r..v..i.c..e.................................................................................................................8 2.2 Add new tunnel ................................................................................................................. -
Cryptography
Pattern Recognition and Applications Lab CRYPTOGRAPHY Giorgio Giacinto [email protected] University of Cagliari, Italy Spring Semester 2019-2020 Department of Electrical and Electronic Engineering Cryptography and Security • Used to hide the content of a message • Goals – Confidentiality – Authenticity – Integrity • The text is modified by an encryption function – An interceptor should not be able to understand all or part of the message content http://pralab.diee.unica.it 2 Encryption/Decryption Process Key Key (Optional) (Optional) Original Plaintext Encryption Ciphertext Decryption Plaintext http://pralab.diee.unica.it 3 Keys and Locks http://pralab.diee.unica.it 4 Keys L F A Y B D E T C A R C S E E T Y H G S O U S U D H R D F C E I D B T E M E P Q X N R C I D S F T U A E T C A U R M F N P E C J N A C R D B E M K C I O P F B E W U X I Y M C R E P F N O G I D C N T M http://pralab.diee.unica.it 5 Keys L F A Y B D E T C A R C S E E T Y H G S O U S U D H R D F C E I D B T E M E P Q X N R C I D S F T U A E T C A U R M F N P E C J N A C R D B E M K C I O P F B E W U X I Y M C R E P F N O G I D C N T M http://pralab.diee.unica.it 6 Steganography - = http://pralab.diee.unica.it https://towardsdatascience.com/steganography-hiding-an-image-inside-another-77ca66b2acb1 7 Definitions • Cryptography algorithm C = E(K,M) A function E with two inputs – a message M – a key K that outputs – the encrypted message C The algorithm is based on a shared secret between the sender and the receiver K The Encryption Key http://pralab.diee.unica.it 8 Symmetric -
Cisco VPN Client Administrator Guide Release 5.0 April 2010
Cisco VPN Client Administrator Guide Release 5.0 April 2010 Americas Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 527-0883 Text Part Number: OL-5492-02 THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY. The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California. NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE. IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. -
Uila Supported Apps
Uila Supported Applications and Protocols updated Oct 2020 Application/Protocol Name Full Description 01net.com 01net website, a French high-tech news site. 050 plus is a Japanese embedded smartphone application dedicated to 050 plus audio-conferencing. 0zz0.com 0zz0 is an online solution to store, send and share files 10050.net China Railcom group web portal. This protocol plug-in classifies the http traffic to the host 10086.cn. It also 10086.cn classifies the ssl traffic to the Common Name 10086.cn. 104.com Web site dedicated to job research. 1111.com.tw Website dedicated to job research in Taiwan. 114la.com Chinese web portal operated by YLMF Computer Technology Co. Chinese cloud storing system of the 115 website. It is operated by YLMF 115.com Computer Technology Co. 118114.cn Chinese booking and reservation portal. 11st.co.kr Korean shopping website 11st. It is operated by SK Planet Co. 1337x.org Bittorrent tracker search engine 139mail 139mail is a chinese webmail powered by China Mobile. 15min.lt Lithuanian news portal Chinese web portal 163. It is operated by NetEase, a company which 163.com pioneered the development of Internet in China. 17173.com Website distributing Chinese games. 17u.com Chinese online travel booking website. 20 minutes is a free, daily newspaper available in France, Spain and 20minutes Switzerland. This plugin classifies websites. 24h.com.vn Vietnamese news portal 24ora.com Aruban news portal 24sata.hr Croatian news portal 24SevenOffice 24SevenOffice is a web-based Enterprise resource planning (ERP) systems. 24ur.com Slovenian news portal 2ch.net Japanese adult videos web site 2Shared 2shared is an online space for sharing and storage. -
Openvpn with Two-Factor Authentication (2FA)
Portal > Knowledgebase > VPN > OpenVPN > OpenVPN with Two Factor Authentication (2FA) OpenVPN with Two Factor Authentication (2FA) Dmitriy Eshenko - 2021-09-21 - 0 Comments - in OpenVPN Using DUO 2fa with OpenVPN requires to install an additional plugin. Upload tar archive to your router then unarchive required plugins and helper files curl http://dev.packages.vyos.net/tmp/openvpn-plugin-duo_2.4_amd64.deb -O sudo dpkg -i openvpn-plugin-duo_2.4_amd64.deb Following documentation from DUO site, configure OpenVPN instance https://duo.com/docs/openvpn Get integration key, secret key, and API hostname from DUO control panel and add to VyOS the next commands for activating the plugin. set interfaces openvpn vtunX openvpn-option '--plugin /usr/lib/openvpn/duo/duo_openvpn.so IKEY SKEY HOST' set interfaces openvpn vtunX openvpn-option 'reneg-sec 0' Where: IKEY - integration key, SKEY - secret key, HOST - API hostname Full OpenVPN configuration: set interfaces openvpn vtun10 local-port '1194' set interfaces openvpn vtun10 mode 'server' set interfaces openvpn vtun10 openvpn-option '--plugin /usr/lib/openvpn/duo/duo_openvpn.so XXX YYY api-zzz.duosecurity.com' set interfaces openvpn vtun10 openvpn-option 'reneg-sec 0' set interfaces openvpn vtun10 persistent-tunnel set interfaces openvpn vtun10 protocol 'udp' set interfaces openvpn vtun10 server push-route '100.64.0.0/24' set interfaces openvpn vtun10 server subnet '10.23.1.0/24' set interfaces openvpn vtun10 tls ca-cert-file '/config/auth/ovpn/ca.crt' set interfaces openvpn vtun10 tls cert-file '/config/auth/ovpn/central.crt' set interfaces openvpn vtun10 tls crl-file '/config/auth/ovpn/crl.pem' set interfaces openvpn vtun10 tls dh-file '/config/auth/ovpn/dh.pem' set interfaces openvpn vtun10 tls key-file '/config/auth/ovpn/central.key' How to generate cryptographic materials described by the following link https://support.vyos.io/en/kb/articles/using-easy-rsa-to-generate-x-509-certificates-and-keys -2. -
A Generic Data Exchange System for F2F Networks
The Retroshare project The GXS system Decentralize your app! A Generic Data Exchange System for F2F Networks Cyril Soler C.Soler The GXS System 03 Feb. 2018 1 / 19 The Retroshare project The GXS system Decentralize your app! Outline I Overview of Retroshare I The GXS system I Decentralize your app! C.Soler The GXS System 03 Feb. 2018 2 / 19 The Retroshare project The GXS system Decentralize your app! The Retroshare Project I Mesh computers using signed TLS over TCP/UDP/Tor/I2P; I anonymous end-to-end encrypted FT with swarming; I mail, IRC chat, forums, channels; I available on Mac OS, Linux, Windows, (+ Android). C.Soler The GXS System 03 Feb. 2018 3 / 19 The Retroshare project The GXS system Decentralize your app! The Retroshare Project I Mesh computers using signed TLS over TCP/UDP/Tor/I2P; I anonymous end-to-end encrypted FT with swarming; I mail, IRC chat, forums, channels; I available on Mac OS, Linux, Windows. C.Soler The GXS System 03 Feb. 2018 3 / 19 The Retroshare project The GXS system Decentralize your app! The Retroshare Project I Mesh computers using signed TLS over TCP/UDP/Tor/I2P; I anonymous end-to-end encrypted FT with swarming; I mail, IRC chat, forums, channels; I available on Mac OS, Linux, Windows. C.Soler The GXS System 03 Feb. 2018 3 / 19 The Retroshare project The GXS system Decentralize your app! The Retroshare Project I Mesh computers using signed TLS over TCP/UDP/Tor/I2P; I anonymous end-to-end encrypted FT with swarming; I mail, IRC chat, forums, channels; I available on Mac OS, Linux, Windows. -
Embedded Linux for Thin Clients Next Generation (Elux® NG) Version 1.25
Embedded Linux for Thin Clients Next Generation (eLux® NG) Version 1.25 Administrator’s Guide Build Nr.: 23 UniCon Software GmbH www.myelux.com eLux® NG Information in this document is subject to change without notice. Companies, names and data used in examples herein are fictitious unless otherwise noted. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express consent of UniCon Software GmbH. © by UniCon 2005 Software GmbH. All rights reserved eLux is a registered trademark of UniCon Software GmbH in Germany. Accelerated-X is a trademark of Xi Graphics, Inc. Adobe, Acrobat Reader and PostScript are registered trademarks of Adobe Systems Incorporated in the United States and/or other countries. Broadcom is a registered trademark of Broadcom Corporation in the U.S. and/or other countries. CardOS is a registered trademark and CONNECT2AIR is a trademark of Siemens AG in Germany and/or other countries. Cisco and Aironet are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Citrix, Independent Computing Architecture (ICA), Program Neighborhood, MetaFrame, and MetaFrame XP are registered trademarks or trademarks of Citrix Systems, Inc. in the United States and other countries. CUPS and the Common UNIX Printing System are the trademark property of Easy Software Products. DivX is a trademark of Project Mayo. Ericom and PowerTerm are registered trademarks of Ericom Software in the United States and/or other countries. Gemplus is a registered trademark and GemSAFE a trademark of Gemplus. -
Security & Savings with Virtual Private Networks
Everybody’s connecting. Security & Savings with Virtual Private Networks In today’s New Economy, small businesses that might have dealt with just local or regional concerns now have to consider global markets and logistics. Many companies even have facilities spread across the country or throughout the world. At the same time security concerns of their network from hackers, Denial-of-Service (DoS) attacks and sending data over the Internet have become more widespread. Whether companies have a local, national, or global presence, they all need one thing: a way to maintain fast, secure, and reliable communications wherever their offices and workers are located. Until recently, such communications were only available by using leased telephone lines to maintain a Wide Area Network (WAN). Leased lines enabled companies to expand their private network beyond their immediate geographic area. Moreover, a WAN provided advantages over a public network like the Internet when it came to reliability, performance, and security. Unfortunately, leased lines are expensive to maintain, with costs rising as the distance between the offices increases. As the popularity of the Internet grew, businesses turned to it as a cost-effective way to extend their networks. The continuing popularity with the Internet has led to the evolution of Virtual Private Networks (VPNs). A VPN is a connection that allows private data to be sent securely over a shared or public network, such as the Internet. In fact, one of the driving forces behind VPNs is the Internet and its global presence. With VPNs, communication links between users and sites can be achieved quickly, inexpensively, and safely across the world. -
NAT Traversal About
NAT Traversal About Some difficulties have been encountered with devices that have poor NAT support. FreeSWITCH goes to great lengths to repair broken NAT support in phones and gateway devices. In order to aid FreeSWITCH in traversing NAT please see the External profile page. Some routers offer an Application Layer Gateway feature which can prevent FreeSWITCH NAT traversal from working. See the ALG page for more information, including how to disable it. Using STUN to aid in NAT Traversal STUN is a method to allow an end host (i.e. phone) to discover its public IP address if it is located behind a NAT . Using this method requires a STUN server on the public internet and a client on the phone. The phone's STUN client queries the STUN server for it's own public IP and transmits the information it has received in it's connection information in the SIP packets it sends to the SIP server. Enable and configure STUN settings on your phone in order correctly to report your phone's contact information to FreeSWITCH when registering. Unfortunately, not all phones have a properly working STUN client. STUN servers This site contains a list of public STUN servers: https://gist.github.com/zziuni/3741933 stun.freeswitch.org is never guaranteed to be up and running so use it in production at your own risk. There are several open source projects to run your own STUN server, e.g. STUNTMAN Using FreeSWITCH built-in methods to aid in NAT Traversal nat-options-ping This parameter causes FreeSWITCH to regularly (every 20 - 40s) send an OPTIONS packet to NATed registered endpoints in order to keep the port on the clients firewall open. -
NAT and NAT Traversal Lecturer: Andreas Müller [email protected]
NAT and NAT Traversal lecturer: Andreas Müller [email protected] NetworkIN2097 - MasterSecurity, Course WS 2008/09, Computer Chapter Networks, 9 WS 2009/2010 39 NAT: Network Address Translation Problem: shortage of IPv4 addresses . more and more devices . only 32bit address field Idea: local network uses just one IP address as far as outside world is concerned: . range of addresses not needed from ISP: just one IP address for all devices . can change addresses of devices in local network without notifying outside world . can change ISP without changing addresses of devices in local network . devices inside local net not explicitly addressable, visible by outside world (a security plus). NetworkIN2097 - MasterSecurity, Course WS 2008/09, Computer Chapter Networks, 9 WS 2009/2010 40 NAT: Network Address (and Port) Translation rest of local network Internet (e.g., home network) 10.0.0/24 10.0.0.1 10.0.0.4 10.0.0.2 138.76.29.7 10.0.0.3 All datagrams leaving local Datagrams with source or network have same single source destination in this network NAT IP address: 138.76.29.7, have 10.0.0/24 address for different source port numbers source, destination (as usual) NetworkIN2097 - MasterSecurity, Course WS 2008/09, Computer Chapter Networks, 9 WS 2009/2010 41 NAT: Network Address Translation Implementation: NAT router must: . outgoing datagrams: replace (source IP address, port #) of every outgoing datagram to (NAT IP address, new port #) . remote clients/servers will respond using (NAT IP address, new port #) as destination addr. remember (in NAT translation table) every (source IP address, port #) to (NAT IP address, new port #) translation pair -> we have to maintain a state in the NAT . -
Analysis of Recent Attacks on Ssl/Tls Protocols A
ANALYSIS OF RECENT ATTACKS ON SSL/TLS PROTOCOLS A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF APPLIED MATHEMATICS OF MIDDLE EAST TECHNICAL UNIVERSITY BY DUYGU OZDEN¨ IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN CRYPTOGRAPHY SEPTEMBER 2016 Approval of the thesis: ANALYSIS OF RECENT ATTACKS ON SSL/TLS PROTOCOLS submitted by DUYGU OZDEN¨ in partial fulfillment of the requirements for the de- gree of Master of Science in Department of Cryptography, Middle East Technical University by, Prof. Dr. Bulent¨ Karasozen¨ Director, Graduate School of Applied Mathematics Prof. Dr. Ferruh Ozbudak¨ Head of Department, Cryptography Assoc. Prof. Dr. Murat Cenk Supervisor, Cryptography, METU Examining Committee Members: Assoc. Prof. Dr. Murat Cenk Cryptography, METU Assoc. Prof. Dr. Ali Doganaksoy˘ Mathematics, METU Asst. Prof. Dr. Fatih Sulak Mathematics, ATILIM UNIVERSITY Date: I hereby declare that all information in this document has been obtained and presented in accordance with academic rules and ethical conduct. I also declare that, as required by these rules and conduct, I have fully cited and referenced all material and results that are not original to this work. Name, Last Name: DUYGU OZDEN¨ Signature : v vi ABSTRACT ANALYSIS OF RECENT ATTACKS ON SSL/TLS PROTOCOLS Ozden,¨ Duygu M.S., Department of Cryptography Supervisor : Assoc. Prof. Dr. Murat Cenk September 2016, 46 pages Transport Layer Security(TLS) and its predecessor Secure Socket Layer(SSL) are two important cryptographic, certificate based protocols that satisfy secure communication in a network channel. They are widely used in many areas such as online banking systems, online shopping, e-mailing, military systems or governmental systems. -
Peer-To-Peer Protocol and Application Detection Support
Peer-to-Peer Protocol and Application Detection Support This appendix lists all the protocols and applications currently supported by Cisco ASR 5500 ADC. • Supported Protocols and Applications, page 1 Supported Protocols and Applications This section lists all the supported P2P protocols, sub-protocols, and the applications using these protocols. Important Please note that various client versions are supported for the protocols. The client versions listed in the table below are the latest supported version(s). Important Please note that the release version in the Supported from Release column has changed for protocols/applications that are new since the ADC plugin release in August 2015. This will now be the ADC Plugin Build number in the x.xxx.xxx format. The previous releases were versioned as 1.1 (ADC plugin release for December 2012 ), 1.2 (ADC plugin release for April 2013), and so on for consecutive releases. New in this Release This section lists the supported P2P protocols, sub-protocols and applications introduced in the ADC Plugin release for December 1, 2017. ADC Administration Guide, StarOS Release 21.6 1 Peer-to-Peer Protocol and Application Detection Support New in this Release Protocol / Client Client Version Group Classification Supported from Application Release 6play 6play (Android) 4.4.1 Streaming Streaming-video ADC Plugin 2.19.895 Unclassified 6play (iOS) 4.4.1 6play — (Windows) BFM TV BFM TV 3.0.9 Streaming Streaming-video ADC Plugin 2.19.895 (Android) Unclassified BFM TV (iOS) 5.0.7 BFM — TV(Windows) Clash Royale