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The Cisco simulator runs in a Windows environment and consumes resources. Therefore, Dynamips is installed on an existing CentOS6Linux operating system to simulate Cisco routing and switching. 1. Download: download the required packages [root @ ciscotest] # wgethttp: // www. ipflow. utc. fr... The Cisco simulator runs in a Windows environment and consumes resourc

If a Cisco Wireless Router is improperly configured, problems such as disconnection and disconnection may occur. It is very important for us to have a deep understanding of the details in Cisco wireless router configuration. Next we will introduce the relevant knowledge in detail. As we all know, wireless signals are the carriers of data transmission, which means that the stability of wireless networks has

Compared with Cisco, you should pay attention to setting up a Huawei switch so that you can easily avoid common problems and enjoy a smooth sailing when setting up a Huawei switch. How to Set Up A Huawei switch has become a concern. This article explains in depth the principles, ideas, and test process of the switch. Compared with Cisco devices. The comparison between the two is actually a comparison betwee

As a leader in the current routing market, Cisco routers have advanced routing technology. Here we mainly analyze the future development of Cisco routers. Cisco routers are the leading enterprises in the routing industry, its market competitiveness is very strong, and Cisco also brings new opportunities to partners. Re

There are multiple backup technologies for Cisco routers. Here we will introduce the router's own backup technology and line backup technology. Generally, a router is a bridge between a LAN and a wan. The so-called router's own backup technology is designed to solve a router's own hardware (such as memory, CPU) or software IOS fault or local port fault, network breakdown caused by the failure of the port or line of the connected local area device. Th

What is Cisco Packet tracer?The Cisco Packet Tracer is a powerful network simulation tool for training in Cisco certifications. It gives us a good view of the interfaces of each router and network device, with many options, and we can use unlimited devices in the network just like with physical machines. We can create multiple networks in a single project for spe

There are a lot of users using Cisco routers, global debugging of Cisco routers here today I would like to introduce you, I hope to be useful to you. The boundaries of global and interface commands are obvious when conducting Cisco router configuration. In this case, we use the global to identify the commands that cannot be used for interface debugging or for sp

It is very important to know more about the configuration of Cisco routers. Here we mainly analyze the configuration steps of Cisco routers, have you ever encountered this problem: Because you forgot your password, you were forced to reject the original friendly "friend"-A vro or vswitch, and you were unable to reset parameters and collect statistics. The following describes how to clear passwords for sever

With the development of China's routing industry, Wireless routers are also widely used. Here we mainly explain a new Wireless-N Wireless router launched by Cisco, cisco Wireless Router WRT320NWRT320N is the latest Wireless-N Wireless router launched by Linksys. This product is consistent with the excellent quality and exquisite workmanship of Linksys, it began to focus on the appearance design, WRT320N usi

In fact, many brands of vro configuration commands are very similar. Therefore, this article provides a comprehensive analysis of commonly used Cisco vro configuration commands for Cisco vrouters, at the same time, I learned more. The basic status of a vswitch with the Cisco router configuration command: Switch:; ROM statusHostname #; privileged ModeHostname (con

Release date:Updated on: Affected Systems:Cisco IOS 15.xCisco IOS 12.xUnaffected system:Cisco IOS 15.1 (3) TCisco IOS 15.1 (2) T2aCisco IOS 15.1 (2) T2Cisco IOS 15.1 (2) SCisco IOS 15.1 (1) T3Cisco IOS 15.1 (1) S1Cisco IOS 15.0 (1) S4Cisco IOS 15.0 (1) S3aCisco IOS 15.0 (1) M5aCisco IOS 15.0 (1) M4Cisco IOS 12.4 (25e)Cisco IOS 12.4 (24) T5Cisco IOS 12.4 (24) GC4Cisco IOS 12.4 (2) XB12Cisco IOS 12.4 (15) XM3Cisco IOS 12.4 (15) XMCisco IOS 12.4 (15) T15

A Cisco router is detected infected with a secret backdoor. Security company FireEye researchers reported that backdoor programs called SYNful knock were found on 14 Cisco routers in 4 countries. Cisco has confirmed this. The attack does not take advantage of the vulnerability of the product itself, but requires valid management creden。 such as the default passw

Password Recovery principle of the Cisco router-the Cisco router stores several different configuration parameters and stores them in different memory modules. The introduction is as follows: ---- · internal memory type ---- Cisco2500 series routers have five types of memory: ROM, flash memory, immutable RAM, and shared memory. Function: www.2cto.com memory class function: the boot program flash memory of t

Vswitches need to be configured for the recently merged server link set... I have never obtained a vswitch before. I want to sell it now... Generally, the vswitch supports telnet. If you have configured an ip address, you can directly telnet the vswitch. If you do not have any configuration, you need to use the Serial port. Choose Serial for the Serial port... Fortunately, we support all the omnipotent putty tools. If you use a tool, you can also choose Secure CRT... Enter the password after l

A malicious user may use a Sniffer tool like Sniffer to perform local monitoring on the Administrator host or an appropriate interface to obtain the Administrator's password for logging on to the Cisoc router. So how can we use SSH to enhance the remote management of Cisco routers? 1. Security Testing I installed sniffer locally and used Telnet to log on to the Cisco router. Stop sniffing and decode it. 1 s

This article describes in detail how to skillfully set the speed limit for commonly used Cisco routers, and provides detailed operation steps. I hope this article will help you. The so-called speed limit is to set the ACL Access Control List on the router) to block the port used by the Service, so as to prevent the normal operation of the service. For the btsoftware, we can try to seal its port. In general, the btsoftware uses port 6880-6890. Use the

This article mainly introduces the backup and recovery of IOS software. An important method is the backup and recovery of IOS software. Today, I will share with you some tips on the backup and recovery of this IOS software. We hope to make progress together with readers. I. a principled suggestion Before upgrading the IOS software of a Cisco router or vswitch, copy the software from the original Cisco flash

Cisco Policy Suite Information Leakage Vulnerability (CVE-2018-0134)Cisco Policy Suite Information Leakage Vulnerability (CVE-2018-0134) Release date:Updated on:Affected Systems: Cisco Policy Suite Description: Bugtraq id: 102954CVE (CAN) ID: CVE-2018-0134Cisco Policy Suite is the Management Policy Suite.Cisco Policy Suite has a security vulnerability in th

Cisco NX-OS System Software Arbitrary File Read Vulnerability (CVE-2017-12338)Cisco NX-OS System Software Arbitrary File Read Vulnerability (CVE-2017-12338) Release date:Updated on:Affected Systems: Cisco NX-OS Description: Bugtraq id: 102260CVE (CAN) ID: CVE-2017-12338Cisco NX-OS is a data center-Level Operating System.Cisco NX-OS System Software has a sec

Cisco WebEx Meetings Server Cross-Site Request Forgery (CVE-2016-1448)Cisco WebEx Meetings Server Cross-Site Request Forgery (CVE-2016-1448) Release date:Updated on:Affected Systems: Cisco WebEx Meeting Center 2.7 Description: CVE (CAN) ID: CVE-2016-1448Cisco WebEx Meetings is a network conferencing solution.Cisco WebEx Meetings Server 2.7 has the Cross-Sit