One of the functions of a router is to connect to different networks, and the other is to select the route of information transmission. Choose smooth shortcut, can greatly improve communication speed, reduce network system communication load, save network system resources, improve network system unblocked rate, so that the network system to play a greater benefit.
From the point of view of filtering network traffic, the function of router is very similar to that of switch and Network Bridge. Ho
This article describes in detail how low-end and high-end routers think about network security, as well as the basic principles of routers. I believe this article will help you.
Low-end routers and high-end routers are similar in usage. Why is the price so far different ?" In fact, this question is very good, and many
In recent years, the development of the Internet has been very rapid and applications have become increasingly commercialized, making it difficult to predict the development of the number of online users. In addition, more and more users need high-speed access. According to relevant information, the slow speed of Internet access is the primary cause of complaints from many netizens. Therefore, it is increasingly important to improve network bandwidth, network service quality, and network managem
Routers play an important role in the internet cafe network environment, but also often encounter many problems. Here we mainly analyze how the Internet cafe routers solve frequent disconnection problems. Currently, Internet-based applications of Internet cafe users have expanded from simple web browsing to more extensive fields such as QQ chat, VOD on demand, online games, education and training, and IP ph
For many Internet cafe administrators, it is very important to correctly buy broadband routers for Internet cafes. With the rich Internet resources, many friends want to obtain resources through the network and even perform various entertainment through the network, the Internet cafe industry has become more prosperous.
Internet cafes are a multi-person and complex environment. The speed and stability of Internet access are critical. Therefore, many I
The modular router plays an important role in the development of the network. Today, I will explain the main advantages of the modular router. With the development of network technology and the expansion of network services, IP technology and broadband services have higher requirements on routers in terms of reliability, interface density, flexibility configuration, data packet forwarding speed, and multi-service.
In today's networks, modular
Preface
In the current enterprise network, most of the wired networks are affected by factors such as investment cost and transmission speed. Vro is an important bridge connecting local networks to external networks. It is an indispensable component in the network system and a cutting-edge entry in network security. It is very important to improve its performance.
More and more functions of current vro devices are implemented in hardware mode. The improvement of CMOS integration technology enabl
Vro is the core device in the network. The hardware router is familiar to everyone, and the most typical is the Cisco Series router. Software routers are emerging products, such as the WinRoute Pro software router launched by tiny software and the Internet gateway software router launched by vicomsoft. Compared with a software-based Router, some people think that Cisco products are purely hardware-based routers
Over the years, the traditional router processing speed has been a lot of growth, but still not enough to keep up with the pace of strong applications.
For example, they can now forward nearly 1 million packets per second. But considering a Gigabit Ethernet interface that can send 1,488,000 packets (PPS) per second and receive packets at 1,488,000pps speed, 2000 Gigabit Ethernet ports can easily overload the system. In contrast, multilayer switches/routers
peer-to-peer physical port should support the trunk ports of these two VLANsNote: In Linux, to establish a VLAN first, and the VLAN and the physical port bundle, the switch is two layer exchange, processing is a data frame, so as long as the previous two steps to achieve the same VLAN data exchange. In this example, adding a gateway is using this Linux as a three-tier interchange.Two. Linux acts as a router configuration1. Under Linux, turn on soft route forwarding1. Modify the configuration fi
The router's wide area network address could not be obtained, that is, the router page has been showing the connection status, IP address can not be logged on, resulting in the normal Internet access. How should this situation be resolved? The following small series share is the router WAN address can not get the solution.
First you need to check the Internet bar router's WAN port led is already lit, if the WAN port led is not lit indicates a network cable or crystal head problem. At this point
1. To see if the wireless network card wireless router in the same room, if the interval is similar to the wall barrier, it is recommended that the wireless network card and router in the near distance barrier-free use of the case, determine whether the obstruction caused by the signal attenuation caused by instability.
2. If there are other wireless devices around, or microwave, cordless phone (2.4GHZ, microwave transmission of equipment) because of different wireless devices if the same or si
I believe you should all know that the different speed limits of the router are not the same, I will mainly for Cisco router settings, the details of Cisco router speed limit and its methods.
Nvar speed limit of Cisco router
BT software now blocked will automatically change the port, some software or use 8000, 8080, 2070 and other ports, restricting these ports so that the network is not normal, so to use NVAR (network-based application recognition, network application recognition) , Nbar (
is reached. To protect the compromised system from crashing, we can take the following two strategies:
Filtering data using the Control access list
The access control list is used on the network boundary router of the final attack target, and the ping attack packet is refused to be sent to the attacked host. But this is a rough way, because when you have completely limited the ping packets to the attacked host on the router, the other ping packets that you want to pass through normally will n
] ESP encryption-algorithm 3DES-CBC //ESP protocol uses an encryption algorithm for 3DES-CBC[H3C-IPSEC-TRANSFORM-SET-V7] ESP authentication-algorithm MD5 //ESP protocol uses the authentication algorithm as MD5[H3C-IPSEC-TRANSFORM-SET-V5] quit# Create a security policy template with a template named 1 and a sequence number of 1.[H3C] IPSec policy-template 1 1[H3c-ipsec-policy-template-1-1] transform-set v7 //Specify IPSec security offer for reference[H3c-ipsec-policy-template-1-1] Security ACL /
written as http://, with a colon: instead of a dot.: http.//192.168.1.1
The correct access method is input: http://192.168.1.1 or http://192.168.0.1 (HTTP can be omitted, that is, directly enter 192.168.1.1 or enter 192.168.0.1). Note that different brands of routers, the default IP access address is also not the same, and generally allow users to modify the default address. Therefore, please refer to the instruction manual for the specific acce
This site has previously shown us the method of segmenting a router into eight virtual routers using virtual Routing and forwarding (VRF, VM forwarding) through a scene example. I showed you how to configure VRF, and in this article we continue to use this scenario and, through IPSec configuration, replicate the exact topology and address to eight experimental environments. The entire environment can proceed smoothly, first requires the virtual route
off, you will not have any autodial connections. Since we want to be able to achieve autodial, set it to active, and then click the Execute button at the bottom right to save the settings. (Figure 1)
The fourth step: after reactivating the broadband router, whenever we turn on the power of the device, he will automatically dial and connect the network, thus realizing the function of Internet automation, eliminating the user manual dialing operation.
However, this automatic dialing s
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