configure nat on cisco router

In Cisco router configurations, NAT configurations are frequently used. I hope the introduction below will be helpful to the majority of fans. It is a common method. The vro performs simple NAT translation and sets a CIDR Block in the NAT address pool. After a while, I found

NAT configuration on a CISCO router is in full swing and causes the shortage of IP addresses. to alleviate this problem, an important application is NAT (Network Address Translation ), it is widely used. Through address translation, NAT enables enterprises to access the Inte

One. Test the topology:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/6E/CA/wKiom1WH46fhBjvJAADX2zoss3k937.jpg "title=" TP1. JPG "alt=" Wkiom1wh46fhbjvjaadx2zoss3k937.jpg "/>Two. Test ideas:A. Enable resolution by IP NAT without setting the direction---this way can be accessed directly from the public IP address, or can be accessed by domain name method---unfortunately Cisco is different iOS, so

One. Test the topology:Two. Test ideas:Three. Basic configuration:A.R1:Interface ethernet0/0IP address 202.100.1.1 255.255.255.0No shutdownIP Route 0.0.0.0 0.0.0.0 202.100.1.2B.R2:1. Interface configuration:Interface ethernet0/0IP address 202.100.1.2 255.255.255.0No shutdownInterface ETHERNET0/1No IP addressNo shutdown2.PPPOE Server configuration:AAA New-modelAAA Authentication PPP Default LocalUsername Cisco password 0

NAT technology is a commonly used technology in the vro configuration process. How do I configure and implement its functions? How does it work? The following article will give you a detailed answer. NAT (Network Address Translation) is the Translation of Network IP addresses. NAT is designed to address the increasing shortage of IP addresses. It maps multiple in

NAT configuration instance for cisco router with port ing If the ISP provides many IP addresses, you can use NAT to map an external address to each server. However, if it is not the case (for example, if it is only two times), there are four servers in the Intranet that need to provide external services, one for Intran

Cisco router nat translation 1. One-to-one correspondence between the internal address and the egress address disadvantages: When the egress address resources are scarce, only a small number of hosts can be connected to the internet. 2. The internal address shares the egress address. The router uses the egress address

enable ip nat inside on the interface. In this way, the packet that enters from this interface performs route search first, then, query the NAT table. If the corresponding table item is found, perform the NAT operation.3. 1. Design of the conversion direction and switch point-Cisco NATThis section describes how to use

Cisco configuration instance _ Cisco dual-Egress NAT configuration objective: to simulate the routing function based on the original address policy when a dual-Egress link is available, and access to the external network from different original addresses is realized, in most cases, the vro uses NAT to translate the Int

table to save the information of the session. To really understand NAT, you must first understand the current IP address, the private IP address refers to the internal network or host IP address, the public IP address refers to the internet on the world's only IP address. NAT is implemented in the following three ways: static address NAT:

Nat[network address translation] In the absence of IP address in the case of a great use, it can not be normal Sisu network of the intranet address into a legitimate external network address on the public network to send and receive data. At the same time address translation function can also be very good to hide and protect the host network.Nat has static NAT (internal address and external address one-to-o

The emergence of NAT technology stems from the requirements for private network security and the situation that IPv4 addresses are insufficient. Cisco IOS supports the following common NAT technologies. Today, I found that my colleagues in the company do not understand the implementation of Cisco