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Document directory The Technique Required NAT behavior Changes in Version 2 Http://midcom-p2p.sourceforge.net/ Nat checkVersion 3, with TCP support!Check the compatibility of your NAT (network address translator) and P2P protocolsNat check by Bryan Ford, Web magic by Dave AndersonHosted by MIDCOM-P2P project on SourceForge In the current IPv4 environment, t
In the network code will find that the program is applicable in the local area network, but between the external network and intranet and intranet and intranet is not feasible.The problem is NAT. First, the following NAT is introduced.Nat is the function of NAT (network address Translator), which is the translation of networks. As the name implies, it is a techno
First, we will introduce some basic concepts:NAT (Network AddressNetwork Address Translation: Network Address Translation is generated when IP addresses are increasingly lacking. Its main purpose is to reuse addresses. Nat is divided into two categories: Basic Nat andAddress/port translator ).Nat is a functional module running on a vro. The first solution is the
Turn from: http://www.cnblogs.com/GO-NO-1/p/7241556.html 1, NAT (network address Translator) Introduction NAT has two broad categories, basic NAT and NAPT. 1.1. Basic NAT Static NAT: A public IP corresponding to an internal IP, one-to-one conversion Dynamic nat:n IP corres
First, we will introduce some basic concepts: NAT (Network Address Network Address Translation: Network Address Translation is generated when IP addresses are increasingly lacking. Its main purpose is to reuse addresses. Nat is divided into two categories: Basic Nat and Address/port translator ). Nat is a functional mo
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 NAT, which leads to configuration problems. Here we will briefly ex
The principle of NAT penetration technology today we will look at the NAT technology. When it comes to NAT technology, we may not be unfamiliar with it. It actually exists around us, but we seldom pay attention to it. NAT is a network address translation technique that changes an internal private IP address to a public
Conclusion 1: as long as one Nat is full cone Nat, bidirectional communication can be realized.Conclusion 2: as long as the nat on both sides are not classified as Nat, two-way communication is also possible. In other words, as long as the nat on both sides belong to the con
Meaning of NAT traversal: Nat is designed to save IP addresses, but it hides the addresses of Intranet machines. "unexpected" plays a role in security. Invisible to the outside, non-transparent internal networks are also "fair" applications of the Internet, and the idea of "sharing" is not acceptable, especially the purpose of "Mutual Service" in P2P networks, therefore, traversing
As Internet technology continues to grow exponentially, the allocation of precious network addresses to private networks is finally seen as a waste of valuable virtual real estate. Therefore, the Network Address Translation (NAT) standard is used to leave some IP addresses for repeated use by the dedicated network. This article will show you in detail how to correctly apply the Network Address Translation NAT
Original article: Http://choudaxian.blog.163.com/blog/static/1900141120090122925744/ (1) Full Cone: Nat maps all requests from the same internal IP address and port to the same external IP address and port. Any external host can send IP packets to the internal host through the ing. (2) Restricted Cone: Nat maps all requests from the same internal IP address and port to the same external IP address and port.
Linux-based NAT and firewall hybrid applications (very practical)-Linux Enterprise applications-Linux server application information, the following is a detailed description. 【Abstract] It mainly describes NAT (Network Address Translation) and NAT-based firewall technology in Linux. First, it is introduced by the installation of the Linux system. It focuses on th
What is punching and why? Due to the rapid development of the Internet, IPv4 addresses are insufficient, so each host cannot be assigned a public IP address, so Nat address translation is used. Below is a picture I found online Generally, a connection is actively initiated by a host in the private network (such as the "Computer A-01"), the packet is converted to the server on the public network (such as the "server "), after the connection is establi
255.255.255.0, and the IP address available for conversion is 202.99.160.2. Requires that the internal URL 10.100.100.1~10.100.100.254 be converted to a legal IP address 202.99.160.2. The first step is to set the external port. Interface F0/1 IP address 202.99.160.1 255.255.255.0 In Nat outside The second step is to set the internal port. Interface f0/0 IP address 10.100.100.1 255.255.255.0 IP nat Inside T
1. What is P2P: P2P is the abbreviation of peer-to-peer. Peer has the meanings of "peer-to-peer", "peer", and "peer" in English. In this way, P2P can be understood as "peer-to-peer", or "Peer-to-Peer Networking. At present, people think that it has a bright future in strengthening the communication, file exchange, and distributed computing among others on the Internet .... See http://www.kuqin.com/p2p/20080411/6476.html for detailsWhat we usually call peer network is a P2P network. The concept o
We all know that. Nat is located in the internal and external network, used for internal and external network address conversion, in the current is still IPv4 as the mainstream Protocol IP network, NAT technology is widely used, because it can save scarce public network IP address. But do not think that NAT technology is very simple, think just the internal (or
The terms and functions of NAT (Network Address Translation) are not described here. If necessary, you can refer to the document peer-to-peer communication translation SS network address translators. Address: http://www.bford.info/pub/net/p2pnat Research on P2P communication method through NAT: http://www.ppcn.net/n4690c38.aspx (Note: The Chinese documents have been translated into the four chapters o
would like to show you a corner of the UNIX system.What is Nat?Nat stands for network address translation, which is an IETF standard that allows an organization (including multiple network nodes) to appear on the Internet with one address. Nat converts the addresses of each LAN node into one IP address, and vice versa. It can also be applied to the firewall tech
Http://www.cppblog.com/API/archive/2012/08/24/188130.html Principles and implementation of P2P UDP Nat penetration (with source code)Original: shootingstarsReference: http://midcom-p2p.sourceforge.net/draft-ford-midcom-p2p-01.txt There are often discussions on P2P principles on the Forum, but the discussion is based on the discussion, and there are very few substantive issues (source code ). Haha, here I will use a source code implemented by myself to
NAT (Network Address Translation) is a process of converting an IP address in the IP datagram header to another IP address. In practical applications, Nat is mainly used to enable private networks to access public networks. By using a small number of public IP addresses to represent a large number of private IP addresses, this will help reduce the depletion of available IP address space. Private IP addres
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