grandstream gateway

Internet viruses can spread across the globe in a very short period of time, and caused incalculable losses, and Venus Chen company days Qing Han horse firewall unique gateway virus filtering function, through the firewall and gateway virus filtering work together to effectively prevent and kill viruses, so that enterprises can no longer bear the pain of the virus. Network security is a systematic project,

Creating a Secure RD Gateway is a great thing, so you can access the internal remote access host server directly from the public network environment. The material needed to build this secure RD Gateway is the RD gateway itself, as well as a certificate. Because typically these servers behind the RD Gateway are resourc

Label:OverviewThe M-Odbus protocol is a common language applied to electronic controllers. Through this protocol, the controllerBy the Network (examplesuch as Ethernet) and other devices can communicate. It has become a general industry standard. With it, different manufacturers produce theControl equipment can beCentralized monitoring with a connected industrial network. However, the M-Odbus protocol is very difficult to run between the serial and EthernetThis will require aCommunication gatewa

This section describes the application instances used to configure the vswitch gateway. When you search for the keyword set for the vswitch gateway, you need to learn the detailed steps for setting the vswitch gateway. Therefore, this article should be able to meet the needs of most netizens. When talking about how to set a vswitch, the hardware router is familia

Recently in the work, the need to do Excel import function, because of the Excel data is more, and our server program needs to check the content of the data, will call a lot of external service interface, so no suspense import Excel interface call more than a minute, and error: 504 Gateway Timeout Here are two ways to solve this problem: 1. Optimize business code An interface called for more than a minute, there must be a place to optimize, to see w

Q: repeater,Hub,Bridge, Vswitches, routers,GatewayInLayer-7 protocolWhich layers? A:Repeater, Hub:-layer 1st (Physical Layer) Bridge and switch: Layer 3 (data link layer) Vro: Layer 3 (NetworkLayer) Gateway: Not a device! What is a gateway? As we all know, walking from one room to another must go through one door. Similarly, sending information from one network to another must go through a "

Reprinted: Http://blog.csdn.net/zhangyang0402/archive/2010/06/25/5695050.aspx I. Network Topology 2. Configure the network 1.Network Configuration of A, gw1, gw2, and B A: Eth0: Ipaddr: 192.168.1.2 Netmask: 255.255.255.0 Gateway: 192.168.1.1 Gw1: Eth0: Ipaddr: 172.16.113.173 Netmask: 255.255.255.0 Gateway: 172.16.113.9 Eth1: Ipaddr: 192.168.1.1 Netmask: 255.255.255.0 B: Eth0: Ipaddr: 192.168.0.2 Ne

Once I got it on wireless, I finally found a solution on a foreign website. Http://support.microsoft.com/default.aspx? SCID = KB; en-US; 821980 Product = WINXP The Internet gateway device discovery and control client permits windows to detect and interact with Internet gateway devices. internet gateway devices include routers and computers that run Internet Co

?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

SSH through gateway to implement port forwarding Compared with the previous on two virtual machines via SSH port forwarding to achieve secure communication, this experiment in two virtual machines to join the gateway. First, the experimental environment: Three Linux virtual machines, VM1 (172.16.1.2) belong to the Vmnet1 subnet, vm2 (172.16.2.2) belong to the Vmnet2 subnet, gate as a

Build your own LoRaWAN gateway, Step 3: Set up a parametric operation dimensionIntroduction If you only care: Create a LoRaWAN gateway, please refer to "Spend one hours to build your own LoRaWAN gateway" https://blog.csdn.net/jiangjunjie_2005/article/details/79758720 If you are interested in: how to set parameters and operational diagnostics for the LoRaWAN

Description: Here serv-u installation instructions on the free Oh, in this environment, Serv-u is installed in the 192.168.2.224 virtual machine. I. Installation of SERV-U Gateway gateways 1, download "Serv-u-gateway-setup.exe" (Support 64bit System). Download Address: http://www.serv-u.cn/download.htm 2, run "Serv-u-gateway-setup.exe", follow the prompts to i

System environment: Exchange mail server, MDaemon Mail gateway operating system using Server 2003, another analog extranet mail server to send and receive mail system random (the experimental environment using MDaemon 10.1.2) Experimental basic configuration: MDaemon 12.0.3 as the gateway to Exchange Mail server, ip:192.168.1.158, domain name: sg.kity.com; internal construction Exchange 2003 mail servers a

In Gartner's information security Report of August this year, NGFWS, in principle, does go beyond the state port and protocol filtering mechanism of the common firewall, which can perform part of the intrusion prevention function based on deep packet detection technology, and on some high-end devices, can also provide port/ The identity attribute management and policy execution function of a protocol-independent application. The report also highlights, however, that while many companies claim t

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