gateway lookup

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

RADVISION recently announced that the video interoperability between SCOPIA video gateway for Microsoft Lync and Microsoft Lync 2010 and Microsoft Office Communications Server 2007 R2 has passed Microsoft's qualification. SCOPIA video gateway is fully qualified for compatibility with Microsoft UC Video Solutions. SCOPIA video gateway allows Microsoft Lync 2010 an

, any WAN is much slower than a LAN. This means that the network used by the mobile local client differs greatly from the performance characteristics of the server-side Web application's LAN. A server-side web app can send a large number of requests to the back-end service without impacting the user experience, but the mobile client can only send a small number of requests.• The number of service instances and their location (host + port) are dynamically changed.The service may change over time,

Some websites that run on Nginx sometimes appear "502 Bad Gateway" errors, even when they occur frequently. The following is a small compilation of some of the Nginx 502 error troubleshooting methods, for reference:The reason for Nginx 502 error is more because of a problem with the backend server in proxy mode. These errors are generally not the problem of nginx itself, be sure to find the reason from the back end! But Nginx put these mistakes are in

CenOS gateway encountered a problem when our company used PacketiXVPN. After a long time, I did not solve the problem, so I found out the problem by looking for their technical staff to completely simulate our network environment. it is representative and I will share it with you. Network environment... CenOS gateway problems A problem occurred when we used PacketiX VPN. After a long time, I did not solve

First, the concept of the Gateway: Gateway, also known as the Inter-Network connector, protocol converter. The gateway realizes network interconnection above the network layer, is the most complex network interconnection device, only for two high-level protocol different network interconnection. Gateways can be used for both WAN interconnection and LAN interconne

it?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 t

this time, Nginx cannot transfer the PHP file to PHP-FPM processing, so the CPU will be reduced to very low (not to handle PHP, not to execute SQL), and the load will rise to very high (close and open children, nginx wait php-fpm), the network card traffic is also reduced to very low ( Nginx cannot generate data transfer to client)Solving the problem is simple, increase the number of children, and set max_requests to 0 or a larger value, restart PHP-FPMThe implication of Nginx 504

mail system can not be achieved. 4. No Archiving service. The old messaging system generally does not provide archiving services, and once a mail system administrator needs to look up an email from a massive historical message, it is simply impossible. In the face of existing mail problems, most colleges and universities, considering the large expansion of students in recent years, many aging information systems need to be replaced, temporarily unable to release more resources to rebuild the

In the day-to-day maintenance of the campus network, the management of hundreds of machines IP address is a more vexing thing. Reality one, campus network of the Internet connection using proxy server or router mode, in order to ensure that the workstations can normally access the Internet, must be in each client to add gateway settings; Two, the school's campus network issued, generally divided into internal and external version, taking into account

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