cisco vpn router

This article describes how to configure a vswitch for a CISCO 3550 router and how to configure access control for a MAC address. In network management, users often encounter this situation: some users violate management regulations and modify their own IP addresses without permission to access restricted resources. Such behavior not only undermines information security rules, but may also cause network comm

First, the Cisco router to introduce the memory A router is similar to a computer in that it also has memory, operating system, configuration, and user interface, and the operating system in Cisco routers is calledInternet Operating System (Internetwork operating system) or iOS. The following is mainly about the stora

Cisco router Startup ProcessThe Startup Process of a Cisco router is divided into four main stages: 1. execute POST 2. load the bootstrap program 3. search for and load Cisco IOS software 4. find and load the startup configuration file, or enter the setup Mode 1. executing P

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,

Everyone knows that the Cisco router ACL plays an important role in the security policy of the Cisco router. Therefore, it is essential for everyone to master these knowledge points. In fact, this content is involved in many places. Access List) is an ordered statement set. It is a Sort table that allows or rejects pac

Before giving you a detailed introduction to the Cisco router ACL, first let everyone know about the ACL, and then give a full introduction to the mask to block the scam attack. Wildcard-mask wildcard mask in the Cisco router ACL Access Control List ). Brief: The wildcard mask (or anti-mask) used in the

configure NAT, a traditional IP Nat inside/outside mode, a NAT Virtual Interface (NVI) way, configure IP NAT enable under the interface, two ways can coexist simultaneously ---can successfully do NAT first need to exist routing, another must be from the IP Nat inside interface, from the IP Nat outside interface, or from an IP Nat enable interface to enter from another IP NAT enable interface out ---for the traditional way of l2l VPN configuration,

Analysis of Cisco router IOS backup and recovery Introduction: I. Wiring Serial Interface-> console and pc Nic interfaces-> F0/0 // The IP address of the PC and the F0/0 interface (of course, other interfaces can be connected to the network cable). The IP address can be in the same network segment. You can also use an Internet ip address! Ii. Tools 3 CDaemon (tftp server) and CRT (access routing tool) Iii.

Here we will mainly introduce the configuration and initial installation of Cisco routers. Describes how to configure Cisco router settings and remote access, this article discusses how to use the DHCP service function of the internal network to allocate address information for users who remotely dial in and how to troubleshoot common vro faults. 1. Initial insta

Basic configuration of the Cisco PT Simulation Experiment (10) routerExperimental Purpose :Mastering several common configuration methods of routersFamiliar with different command line operation modes of routersBasic configuration commands for the Palm-lift routerExperimental Background : as a network administrator, you first in the equipment room to the router after the first configuration, I hope in the f

The question about the Cisco router interface is described in the following four steps. Based on the demonstration in the image, I believe that we should be able to clearly understand the question about the interface. You can configure a serial interface through a virtual terminal. to configure a serial interface, follow these steps: 1. In Global mode, enter the command "interface serial 0" to enter the ser

Some Suggestions on preventing distributed denial of service (DDoS) attacks on Cisco Routers 1. Use the ip verfy unicast reverse-path network interface command This function checks each packet passing through the router. In the CEF (Cisco Express Forwarding) Table of the router, the