Xem 1-19 trên 19 kết quả Vpn architectures
  • A virtual private network (VPN) is a network that extends remote access to users over a shared infrastructure. VPNs maintain the same security and management policies as a private network. They are the most cost effective method of establishing a point-to-point connection between remote users and an enterprise customer’s network.

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  • What is a VPN? Cisco Documentation on VPN • A VPN is a Virtual Private Network • Now, as more and more companies need access for remote users, mobile users or remote offices, your current architecture can be augmented with a VPN • A Virtual Private Network is a network that’s created by encryption (Tunneling) across another unsecured medium, like the Internet • What is great about Cisco and VPN’s is that all Cisco devices can be configured as a VPN enabled device solely by the IOS feature set itself. There is a concentrator series, but...

    pdf21p phongthinh 07-08-2009 496 172   Download

  • This design guide addresses implementing IPmc in a QoS-enabled IPsec VPN WAN for both site-to-site and small office/home office (SOHO). This design guide is the fourth in a series of Voice and Video Enabled IPsec VPN (V3PN) design guides hat are available under the general link http://ww.cisco.com/go/srnd, which also contains many useful design guides on QoS, IPmc, and WAN architectures: • Voice and Video Enabled IPsec VPN (V3PN) Design Guide • Enterprise Class Teleworker: V3PN for Teleworkers Design Guide • IPsec VPN Redundancy and Load Sharing Design Guide...

    pdf41p batoan 10-08-2009 140 31   Download

  • A network designer that wants to design a scalable MPLS VPN solution is always faced with a number of scalability issues, several of them being related to the MPLS VPN architecture: n MPLS VPN uses internal BGP (IBGP) to propagate VPNv4 routes between PE routers. Default IBGP implementation requires a full-mesh of BGP sessions between PE routers—a design that is only appropriate for very small networks.

    pdf1p trungha 28-08-2009 90 25   Download

  • What Is Needed to Build a VPN? Overlay and Peer-to-Peer VPN Architecture VPN Topologies Characteristics of a Secure VPNs VPN Security: Encapsulation VPN Security: IPsec and GRE VPN Security: Symmetric and Asymmetric Encryption Algorithms Symmetric Encryption Algorithms Asymetric Encryption Diffie-Hellman Key Exchange Data Integrity VPN Security: Authentication

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  • 1.Connect devices that are separated by a broader geographical area. 2.Use the services of carriers, such as telephone companies, network providers… 3.Use serial connections.A VPN is an encrypted connection between private networks over a public network such as the Internet. Instead of using a dedicated Layer 2 connection such as a leased line, a VPN uses virtual connections called VPN tunnels, which are routed through the Internet from the private network of the company to the remote site or employee host.

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  • This guide covers the three remote access to MPLS VPN network architectures: dial, DSL, and cable. The guide references features described in the Cisco IOS configuration guides and command references. Consult those documents for additional information. This guide is meant for new and existing MPLS VPN service providers. It includes overview and configuration information designed to enable users to get their systems running as quickly as possible. However, it does not include extensive software configuration instructions.

    pdf1p trungha 28-08-2009 182 35   Download

  • This design guide evaluates Cisco VPN product performance in scalable and resilient site-to-site VPN topologies, using Cisco VPN routers running Cisco IOS Software, with IPsec as the tunneling method. The concepts presented can also be applied to other Cisco products that do not run Cisco IOS software. This design guide begins with an overview, followed by design recommendations and product selection and performance information. Finally, partial configuration examples are presented.

    pdf41p minhthanh 11-08-2009 147 27   Download

  • The inherent uncertainty in property prices are traditionally characterized by probability distributions (Ratcliff, 1972 and Squirell, 1985). However, the lack of precise information on properties often poses a problem. As mentioned by Bagnoli and Smith (1998), appraisers use a great deal of judgment to identify the characteristics (attributes) of properties that relate to property prices. Additionally, they usually have to consider qualitative characteristics, such as structural quality, architectural attractiveness and location convenience.

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  • When talking about cryptography, we refer to senders and receivers wishing to exchange messages or plaintext by exchanging ciphertext. It is assumed that an eavesdropper reading ciphertext should not be able to extract corresponding plaintext. This characteristic is called confidentiality. The process performed by a sender to hide plaintext is called encryption, the reverse operation is called decryption. These processes are often expressed as mathematic functions or com- puting algorithms. The encryption and decryption algorithms together constitute a cipher.

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  • IDC believes that multilayered security solutions offer enterprises a cost-effective and multifaceted alternative to enhance overall infrastructure security posture and improve customer and management confidence levels. By adopting an overwatch architecture with additional security layers that detect and remediate threats that have bypassed perimeter and content security, security managers can reduce the risks of breaches and infections associated with existing unknown security gaps and vulnerabilities.

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  • This chapterdiscusses the concept of borderless Networks. It discusses Cisco borderless Network architecture, including the components and underlying technologies. You will learn about the Cisco security portfolio products that address specifically issues of borderless Networks, and more precisely about Cisco SecureX. This chapter introduces Cisco threat control and containment products and VPN technologies that will be covered in greater detail in subsequent chapters.

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  • Describe the enterprise requirements for providing teleworker services, including the differences between private and public network infrastructures. Describe the teleworker requirements and recommended architecture for providing teleworking services. Explain how broadband services extend enterprise networks using DSL, cable, and wireless technology,...

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  • This document provides design recommendations, configuration examples, and scalability test results for implementing a next-generation WAN for Voice and Video Enabled IPsec VPN (V3PN) based on a service provider WAN interface handoff using Ethernet at the enterprise campus and branch locations. This document provides the enterprise network manager with configuration and performance guidance to successfully implement or migrate to a WAN architecture using Ethernet as an access technology to a service provider network....

    pdf73p batoan 11-08-2009 99 13   Download

  • Important Information Latest Software We recommend that you install the most recent software release to stay up-to-date with the latest functional improvements, stability fixes, security enhancements and protection against new and evolving attacks. Latest Documentation The latest version of this document is at:

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  • Security vendors strive to provide new and innovative products and services that allow customers to rapidly deploy and provide optimal protection against today's continually evolving and sophisticated threat ecosystem. Despite these ongoing efforts, traditional security solutions and approaches by themselves sometimes fall short in protecting enterprises against many of today's complex and zero-day attack forms. The reality is that due to existing unknown security gaps and vulnerabilities, current enterprise infrastructure security is not 100%.

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  • Packet snooping can be detected in certain instances, but it usually occurs without anyone knowing. For packet snooping to occur, a device must be inserted between the sending and receiving machines. This task is more difficult with point-to-point technologies such as serial line connections, but it can be fairly easy with shared media environments. If hubs or concentrators are used, it can be relatively easy to insert a new node. However, some devices are coming out with features that remember MAC addresses and can detect whether a new node is on the network.

    pdf52p cao_can 02-01-2013 29 2   Download

  • Companies must protect confidential information from eavesdropping or tampering during transmission. By implementing Virtual Private Networks (VPNs) enterprises can establish private, secure communications across a public network—usually the Internet—and extend their corporate networks to remote offices, mobile users, telecommuters, and extranet partners.

    pdf19p khongmuonnghe 04-01-2013 19 2   Download

  • Multi-site, 3-tier-web architecture, robust security, written in Java & scripting language, good support system.Very user-friendly, 3-tier web architecture, excellent scalability, robust security, high latency of VPN’s security, built in Python programming language, very good upgrade frequency, simulation based ERP, Live Tutorial Cd.Flexible upgrade, Flexible report generation, User friendly, good update frequency

    ppt16p khuatthihoa 29-07-2013 35 2   Download

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