nat for dummies

LVS-NAT LVS-DR model of Load Balancing LVS is short for Linux Virtual Server. It is a Virtual Server cluster system that can define one or more backend servers. Worker s in the INPUT kernel. LVS Scheduling Methods: 10Static Method: only scheduling based on the algorithm itselfRr: Round RobinWrr: Weighted RR Weight Round RobinSh: source hashing supports session binding Based on ip address anti-balancingDh: destination hashing is not used much according

This article describes how to configure dual-address dual-Egress and how to apply NAT configurations. I believe this article will help you. Environment Description: uses the Cisco2621XM + NE-1E module, which has two FastEthernet and one Ethernet port. Now we use Ethernet port 1/0 to connect to the internal LAN, simulating a policy route based on the original address when there are 100.100.23.0 255.255.255.0.0 and 100.24.0 255.255.255.0.0 clients inter

NAT technology Overview With the development of the Network, Network Address Translation plays an irreplaceable role in Network construction. In essence, NAT is designed to alleviate the problem of insufficient lP addresses. In practice, NAT also has some derivative functions, such as hiding and protecting computers in the network, to avoid attacks from outside t

1. NAT-Based Network PlanningA friend once asked me if I had a large data center with 100 machines in my unit. Is there any good way to achieve Internet access for every computer? In my opinion, using proxy is a method, but the workload is heavy. We need to install client software for each machine separately, and also set IP addresses, gateways, DNS servers, and so on. Later, I came up with a good method, that is, creating a

NAT is designed to save the IP address, but it hides the address of the Intranet machine, "accidental" played a security role, because the client is active login to peer-network to be able to cross, so peer-to way also does not violate the enterprise's internal management principles ...What it means to cross a NAT :NAT is designed to conserve IP addresses, but it

Nat is a very important and widely used technology of routers. However, many readers have not been clear about the working principles of NAT implementation methods, but it is actually very simple. This article first introduces the working principles of the two Nat implementation methods, and next introduces the working principles of the other two implementation m

I. In junos, Nat is similar to netscreen's VIP, but the setting process varies greatly. NAT configuration interface introduction: 650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M02/49/14/wKioL1QOfdehhPnbAAFtZxJDW9M528.jpg "Title =" jnat01.png "alt =" wkiol1qofdehhpnbaaftzxjdw9m528.jpg "/> Rule name: name of the NAT service (configuration is not affect

The VMware NAT Mode principle explores:Understanding NAT Mode allows us to learn more about how hosts communicate with virtual machines and how virtual machines can achieve Internet access.And it is easy for us to analyze the problem that the virtual machine cannot communicate with the host and cannot sisu the network.The following through the actual combat: Virtual network topology, packet capture analysis

With the rapid development of the network, more and more enterprises begin to use the network as a platform for enterprise management and sales. At this time, network security is highlighted, next we will introduce the NAT settings of the vro. I. NAT type (1) Dynamic NAT the so-called dynamic NAT, that is, the

Problem description and Solution In Linux, Nat configured through iptables cannot be used in a two-way communication environment. You cannot configure a NAT rule to perform nat on traffic actively initiated in both directions, there are several solutions to this problem:1. Configure two Nat rules The

Three links required by the NAT table: 1. prerouting: You can define the rules for destination Nat here, because the router only checks the destination IP address of the data packet during routing, so in order to make the data packet can be correctly routed, we must perform destination Nat before routing;2. postrouting: You can define the source

Port ing principle To connect a computer on the Intranet to the Internet, port ing is required.Port ing is divided into dynamic and staticDynamic port ing:A computer in the Intranet will send packets to the NAT gateway to access xinlang. the packet header includes the IP address, port, and local IP address and port of the other party (I .e. xinlang network, the NAT gateway will replace the local IP address

I often hear network administrators talk about NAT technology. When will NAT technology be used? There are two main aspects: first, the public IP address is not enough. When an enterprise only rents a limited number of public IP addresses, it is impossible to allocate a public IP address to each internal computer, how can I solve the problem of insufficient IP addresses? In this case, you can use

CIDR (Classless Inter-domain routing, Classless inter-domain Routing) is a way to create additional addresses on the Internet, which are provided to service providers (ISPs) and are assigned to customers by the ISP. CIDR combines routing to reduce the burden on Internet routers by enabling an IP address to represent the thousands of IP addresses of the primary backbone provider services. Dhcp Router Interface IP address is the default gateway The benefits of broadcasting, the other ser

If you are reading this article, you may already be connected to the Internet. This is a great opportunity for you to use Network Address Translation (NAT! The Internet has grown to be much larger than people had imagined. Although its specific scale is unknown, it is estimated that 0.1 billion hosts and more than 0.35 billion of users are active on the Internet. This is more than the total population in the United States! (This article was published

DHCP and NAT are widely used in network protocols. Do you have any knowledge about these two protocols? Here we will give a detailed introduction to these two aspects. First, let's take a look at what is DHCP and what is NAT, and then compare the two. 1. DHCP DHCP is the abbreviation of Dynamic Host Configuration Protocol (Dynamic Host Allocation Protocol). It is divided into two parts: one is the server si

This article describes how to use iptables to create NAT in linux. we can use it as a gateway so that multiple machines in the Lan can use a public IP address to connect to the Internet. the method I use is to override the source address and target address of the IP package through the NAT system. preparation: CPU: PII or higher: any Linux software: Iptables Nic this article describes how to use IptablesTo

Linux dual-Nic NAT shared internet access I. network extension structure: Server: two NICs settings: eth0: 202.96.168.100 mask: 255.255.255.0 Gateway: 202.96.168.68 # with Inte. net associated eth1: 192.168.1.1 mask: 255.255.255.0 # connect to the lan... Linux dual-Nic NAT shared internet access I. network extension structure: Server: two NICs settings: eth0: 202.96.168.100 mask: 255.255.255.0 Gateway: 202.

1. objective: to solve the problem of poor intercommunication quality between networks and carriers, connect two linux hosts of different carriers with a dual Nic and perform nat jump through iptablse to solve this problem. 2. main reference document: Iptables Guide. chm. the following documents refer to it. For a clear flowchart, See section 1 of the firewall for the private kitchen server of laruence. objective: to solve the problem of poor mutual a