single industry to a network service platform in multiple industries
As shown in figure 1, the original IP private network in industry a is transformed and upgraded to become a network service platform, providing network services for multiple industries at the same time. There are similar demands in Politics and Law networks and e-government affairs networks. How to provide a logically isolated, secure, and reliable virtual IP private network for various industries has become a technical proble
great significance. It can be said that the edge router is a technology starter and touchstone.
Demand is a barometer
Technology continues to progress, the demand is constantly updated, edge routers have to non-stop to adapt to the new application environment, and often ahead of standard formulation. Who caters to the market, who is the biggest winner. From the view of high level protocol, IP network is the direction, the edge device should fully meet the requirements of many kinds of service
, then do business", so the implementation of network construction requirements must be easy, implementation time must be very short. The main elements of enterprise's networking solution include: LAN, WAN connection, network management and security. Specifically, enterprise networking needs: ? Establish a secure network architecture, network connection between headquarters and branch offices; ? Secure network deployment, ensure the normal operation of the enterprise; ? Provide
establishment of a secure Network connection on a non-secure Network. Generally, it provides the following services: verification, encryption, and data integrity. VPN can be divided into leased line VPN and dial-up VPN (also known as VPDN, Virtual Private Dialing Network) according to the access method. According to the protocol type, the second layer tunnel protocol includes the point-to-point tunnel protocol (PPTP, point to Point Tunnel Protocol), L2 Forwarding Protocol (L2F, Layer 2 Forwardi
address is used to explain the ISAKMP Security DomainRfc2408 Internet Security Association and Key Management Protocol (ISAKMP)Rfc2409 Internet Key Exchange (IKE)Rfc2410 null Encryption Algorithm and Its Application in IPSec protocolRfc2411 IP Security document GuideRfc2412 the Oakley key determines the ProtocolRfc2435 RTP load format for JPEG compressed videosRfc2449 POP3 Extension MechanismRfc2451 esp cbc-mode cryptographic algorithmRfc2459 Interne
) refers to the establishment of a secure network connection on a non-secure network. Generally, it provides the following services: verification, encryption, and data integrity. VPN can be divided into leased line VPN and dial-up VPN (also known as VPDN, virtual private Dialing Network) according to the access method. According to the protocol type, the second layer tunnel protocol includes the point-to-point tunnel protocol (PPTP, point to Point tunnel protocol), L2 forwarding protocol (l2f, L
, hardware deployment can be done even between the completion of a standardized work for a particular protocol. This is critical to accelerating new technologies like carrier-grade OpenFlow-based Sdn.4.2 Control channel: Asidua's Wanstax product lineAsidua's Wanstax product line provides customers with a complete set of control channel software, thus accelerating the development of network services.With the CFM ITU-T y.1731 Stack, the wanstax supports both OpenFlow 1.3.2 and OAM functions. Wanst
connection, is the realization of GPRS VPN the most critical link, need the same IP address space. It should be explained that GPRS VPN is a new access method on the basis of traditional VPN technology. If the enterprise needs to support both traditional remote dial-up access and GPRS access, the enterprise router device only needs to support both the L2TP protocol and the GRE protocol.
GGSN and Enterprise private networks are hosted through the Internet or other ISP networks, and different se
three main categories, based on MPLS VPN, VPN based on IP technology and SSL VPN based on application layer technology. These VPN technology and equipment testing can be easily achieved through the Ixia company's tools. MPLS based VPN includes L2 VPN,L3 VPN and multicast VPN, etc. VPN based on IP technology includes two-layer L2TP technology, PPTP technology and three-layer
, stable transition or coexistence between IPv4 and IPv6 is an important topic in IPv6 technology. On the one hand, it is necessary to protect the investment of existing networks and support the development of network technology and the stable transition of networks. Currently, common strategies include dual-stack, tunnel and translation support the transition between IPv4 and IPv6.
ZXR10 uses a dual-stack structure to implement IPv6. ZXR10 uses both IPv4 and IPv6 protocol stacks and has both IP
is connected on demand, VPDN usually requires identity authentication (such as using CHAP and RADIUS)
2. define by protocol implementation type
This is the most important way for VPN vendors and ISPs to divide. According to the layered model, VPN can be established on the second layer or on the third layer (some even classify some higher-level security protocols into VPN protocols .)
(1) Layer 2 Tunneling Protocol: this includes point-to-Point Tunneling Protocol (PPTP), Layer 2 Forwarding Proto
undoubtedly a good solution in Multi-Service routers. In addition, all users put QoS first in terms of support for PoE, QoS, MPLS and IPv6. Indeed, the core of multiple businesses is to differentiate the types of businesses, and then provide corresponding policies based on different businesses to allocate different service quality. As said Wu Jianxin, Cisco ISR product manager, "QoS is critical and quality of service must be allocated to each applica
Garson, founder of SD-WAN-Experts: "enterprises need firewalls, IPS, anti-malware, URL filtering, and anti-virus to ensure security. Internally, the network requires Active Directory, DHCP, DNS, and print services. Outside, the edge may require WAN optimization, bandwidth management, QOS, traffic balance, and SD-WAN ."
Few organizations have internal resources to integrate and manage the environment of stacked network devices, especially if they also want to use existing infrastructure. Instead
management
Password levels include commercial passwords, common passwords, top secret passwords, and military passwords. 27.2 virtual private network and virtual private network 1. Basic concepts of VPN and VLAN
VPN and VLAN are temporary and secure connections on a shared network (generally Internet. 2. Differences between IPSec VPN and MPLS VPN
IPSec is an
Service (QoS) assurance. The IPv6 Header does have some improvement in performance. For example, the checksum field is removed, but this is not the same as the so-called QoS warranty. Currently, the technologies that address IP QoS are DiffServ, InterServ, and Multi-Protocol Label Switching (MPLS), which are applicable to both IPv4 and IPv6. In other words, IPv6 uses the same technology as IPv4 to solve the QoS problem. Without IPv6, the service qual
bad messages that can damage the VPN system, but the good news is that hackers generally do not aim to steal information. Financial information is the most likely target if it is for the purpose of stealing information. For example, you can steal credit card information for network spoofing transactions.
What type of VPN (such as SSL and IPsec) is the most vulnerable to security damage?
Enders: There is no 100% secure VPN technology. Each technology
switch connects to the aggregation switch through multi-link bundling. On the one hand, it can completely avoid second-layer loops and make full use of the uplink bandwidth of the access layer. Note that STP should be enabled even in L2 Networks without loops to prevent errors in device configuration and physical link maintenance. At the same time, although the network does not have a loop, STP may still affect the L2 network across multiple data centers. For example, when the network topology
IPv4 is an indelible network, but it cannot meet our needs as we need wireless networks. Now it is about to quit dance, instead of IPv6. However, based on Internet operation experience over the years, we should make some "revolutionary" changes to other parts of IPv4, the biggest change in IPv6 protocol is to obviously simplify the header design, which is mainly reflected in:
◆ Simplified the Header Format. All headers use a fixed length;
◆ Reduce sensitive parts of packet processing, such as ch
control and congestion avoidance technology, for example, the application of QoS in IPSec VPN and MPLS VPN are introduced in detail."Windows Phone Programming Essentials IOS, Android developer must read"Author: (mei) Zhou Yi nan, (mei) Zhu Yu pages: 406 Publishing House: Beijing: Electronic Industry Publishing house published date: 2012.03Summary: This book is a comparison of iOS, Android and Windows phone
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