sna gateway

Introduction 1. About the SIP protocol Currently, there are three basic communication protocols based on VOIP: H 323, SIP, and MGCP. The following describes the comparison between the H 323 protocol and the SIP protocol. H.323 was proposed by ITU. It attempts to regard IP phones as well-known traditional phones, but the transmission mode is changed from circuit switching to group switching, just like analog transmission to digital transmission, and coaxial cable transmission to optical fiber tra

This article starts with the author's public Number: Network Security life cycle Original link: Create an open source WAF gateway Background In the Internet industry, Google will secure the infrastructure inside, has always been the major companies to learn the role model, in the Web, through GFE (Google front-end) unified external release, the business only need to register in GFE, GFE will be transferred to the correct certificate, Secure your TLS c

The security technology of IPv6. Although IPv4 network security is a common problem, it is also a problem to be asked. Now let's talk about the IPv6 Security Gateway information. Now let's take a look at the specific content. IPv6 provides many transition technologies to achieve this gradual process. These transition technologies mainly focus on solving two types of problems: IPv6 isolated island communication technology-to achieve interconnection bet

As the user needs are two-wire, so the use of one network adapter to configure the telecommunications address, another network card configuration Unicom address, Install the rhel6.5 system after the configuration of IP, found that Unicom address and telecommunications address can only have a ping, if the telecommunications address configuration gateway, Unicom address does not match the gateway, you can onl

How to Set dual gateway for a dual-nic host Author: Li Xinhua Source: Application Part 2 time: Jiangxi Provincial Government Affairs Network Security Office (You are not allowed to reprint it without permission) Note :(Win2000serverNo need to set,Win2003serverNeed to set) WebThe host needs two-way Intranet and Internet access. A subnet is a neutral zone and is connected through the telecom egress.Inte

So what exactly is a gateway? A gateway is essentially an IP address of a network to another network. For example, network A and network B, network A's IP address range is "192.168.1.1~192." 168.1.254 ", the subnet mask is 255.255.255.0; The IP address range for Network B is" 192.168.2.1~192.168.2.254 "and the subnet mask is 255.255.255.0. In the absence of a router, TCP/IP communication between the two net

Centos6.5 Implementation of Gateway Router Recently, due to the aging of the company's routers, the Internet was interrupted for a period of time, and the network was disconnected for the first half of the hour. This is a headache for me. In the spirit of saving costs for the company, I decided to build a centos gateway route by myself, so I searched for it on the Internet and finally completed the

(1) Kannel installationThe latest Kannel stable version is 1.4.3 and can be downloaded at http://www.kannel.org. To install after downloading:After decompression, enter the directory of the source files such as: cd/usr/local/gateway-1.4.3, followed by the following command:Apt-get Install LIBXML2 Libxml2-dev./configureMakeMake Bindir=/gateway-1.4.3/bin InstallAfter compiling, you will see two executables in