pstn gateway

?Let's start with some of the things that this architecture needs to do and the shortcomings that exist: First, it destroys the service stateless feature. In order to ensure the security of the external services, we need to implement the access control of the service, and the Open service control mechanism will run through and pollute the entire open services business logic, this will bring the most direct problem is that the service cluster of the rest API stateless features. From the

MicroServices architecture, usually a business system will have a lot of microservices, such as: OrderService, Productservice, UserService ..., in order to make the invocation more simple, usually in the front end of these services to encapsulate a layer, similar to the following:In front of this layer is commonly known as "Gateway layer", its existence significance is that the "1 to N" problem into the "1 to 1" problem, while the request to the real

Some websites running on Nginx sometimes appear as "502 Bad Gateway" errors, some times even frequently. The following is a small compilation of some of the Nginx 502 error troubleshooting Methods for reference: The reason for the Nginx 502 error is more due to a problem with the backend server in Agent mode. These errors are generally not nginx itself problem, must look for the reason from the back end! But nginx all these mistakes in their own body

After this period of thinking, practice, frustration, rethinking, and then practice, the API Gateway scheme is summed up. Overall goal Mainly in order to solve the SOA service framework to provide external API related issues, mainly related to the following aspects: Unified authentication of the flow of anti-attack system split API horizontal expansion, high availability, load all horizontal service automatic scaling ... To solve a series of problems

friends who study or care about the network often hear a network jargon such as "gateway". So what does a gateway mean? What role does it play in the network? Today, a small series to the popular science for everyone what the gateway and its role. 　　What does the gateway mean?

Virus Detection mechanism: a virus is a piece of code, and the final form is a file. Any data streams that are transmitted on the Internet must be composed of files to be detected by the anti-virus scanning engine. When browsing the Web page, we actually get a lot of html files, gif icons, and script files through the http protocol, and the files will eventually arrive at the user's place. To implement http virus filtering, the gateway anti-virus prod

Ocelot gateway, Ocelot is. the open-source project of the gateway under the net core framework is the basic implementation diagram provided by the official team, that is, to unify multiple backend services to the gateway, front-end applications: desktop, web, only the Access Gateway can be used on the app side. The im

Article Title: Build a Linux Mail Gateway and mail system. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Environment: vmware RedHat EL3 x 3 ServerA ip: 192.168.0.231 Mail Gateway server DNS server ServerB ip: 192.168.0.20.email system server ServerC ip: 192.168.0.233 e

VRRP (Virtual Router Redundancy protocol) is the industry standard Gateway Redundancy Protocol, HSRP (hot standby Router protocol) and GLBP (Gateway load balance Protocol) is a Cisco private protocol.Set the same virtual IP address on two or more gateway devices (and they have a physical interface IP address, respectively), and the

If you have a SIP account from a carrier, you can configure the SIP to dial an external phone. The SIP account (or the device providing the account) is referred to as the SIP gateway in FreeSWITCH. Adding a gateway only needs to create an XML file in conf/sip_profiles/external/, with a name that can be randomly used, such as Gw1.xml, and then enter the following code in the file:If you need additional param

Two such problems occur: ADSL can be connected normally, but the Internet cannot be accessed after connection. Ping the command to ping the gateway. Fans Cause: the Winsock2 fault or the file is damaged. Solution: Use the Super Rabbit ie repair expert, which has a tool "strong repair Winsock2". Click Run To fix Winsock2. Restart your computer to access the Internet.(If not, reinstall the system .) ######################################## ######

The deployment structure adopts turbogate as the Mail Gateway and Exchange Server 2007 as the intranet mail system. This deployment method prevents the Intranet exchange mail server from being directly exposed to the Internet, instead, it uses the SMTP protocol to access the Internet through the turbogate Mail Gateway, thus ensuring the security of the Intranet exchange mail server.I. topology structureIi.

App Gateway on Azure is a seven-tier load balancing service, and WAF is an extension of App Gateway services. The seven-tier load balancer adds the functionality of the WAF to protect the HTTP service in the background.Azure WAF is based on the WAF functionality implemented by the open source modsecurity owasp core rule sets. Please refer to Modsecurity's website for details: https://modsecurity.org/The cur

Deployment environmentCentOS 7.4Zabbix 3.4Tomcat 6.0.32　　Server configuration 1, installing the JDKVersion to be confirmed at more than 1.7The following are the 7.0 and 8.0 versions of the JDK source packages:7.0JDK Source Package8.0JDK Source Packageand upload it to Zabbix server.Create the installation directory, download and unzip the installation to this directory# mkdir/usr/local/java/# TAR-ZXVF jdk1.7.0_67.tar.gz-c/usr/local/java/After the installation is successful, mention th

The general VPS Gateway is not changed, and the single suit also applies. First, view the current gateway Arp-a SSH executes the above command to view the gateway host name, Gateway IP, Gateway MAC address and the corresponding network card, as shown below Second, bind

Article title: enable internet gateway by default in linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. After the network adapter is restarted, the default route gateway becomes an intranet gateway and cannot be directly

The Gateway technology in the network is also called the inter-network connector and Protocol converter. The gateway implements network interconnection on the transport layer. It is the most complex network interconnection device and is only used for different network interconnection between two high-level protocols. Gateways can be used for both wide-area Internet and Local Internet. A

Router and three-layer switch experiment Demo--a gateway that acts as a two VLAN--Hundred dishes background : We know that routers have routing capabilities, so you know how to configure two gateways on a router interface (such as a two VLAN gateway)? Note that it is on one interface instead of two, and we sometimes use the three-layer switch as a router, so how do we configure the three-tier switch at this

External Gateway Protocol: BGP (Border Gateway Protocol) BGP: the protocol for exchanging route information between as routers of different self-made systems. The Internal Gateway Protocol rip or OSPF is used to send a datagram to the target site from the source site as much as possible in an. However, the external gateway