Today, we will learn about Internet protocols in terms of addressing, segmentation, and gateway. The addressing method is also the address method we currently use in the IPv4 protocol. With the continuous development of the network, we will replace the current IPv4 with the IPv6 protocol, and the address protocols of the two are also different. In the subsequent articles, we will also compare the two.
Addressing
There is a difference between the name,
So what is the gateway? A gateway is essentially a network that leads to its IP address. For example, if Network A and Network B exist, the IP address range of Network A is "192.168.1.1 ~ 192. 168.1.254 ", The subnet mask is 255.255.255.0, And the IP address range of 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 vro, the two networks cannot communicat
Under normal conditions, two NICs of a server can only be configured with one gateway. If both NICs are configured with a gateway, I am sorry. At this time, the network will fail, there must be at least one NIC address.
The last time I went to the hosting data center to install the server for the customer, one Nic needs to be configured with a public IP address, the gat
C # communication gateway development,
The landlord has been engaged in the development of communication gateway most of the time since he graduated from 12 years. He just learned that he would not even know what C # is, so he started to develop the gateway directly, five or six communication protocols have been established before and after. Later, I saw that th
The company purchased a batch of cloud servers with only the intranet, configured a load balancer (lb), this batch of servers through the LB can provide services, but this batch of servers cannot actively connect to the extranet, such as using wget download files, or curl access to the ttlsa.com site.Purchase an additional cloud server with an external network, configure the server as a gateway server, and the other server
Filter actionThe interface provided by our MicroServices application can be accessed by the client through a unified API Gateway portal. However, when each client user requests the interface provided by the MicroServices application, their access is often limited, and the system does not open all of the microservices interfaces to them. However, the current service routing does not have the ability to restrict permissions, all requests are unreservedl
through and pollute the entire open services business logic, the most direct problem is that the service cluster is destroyed the rest API stateless features. From the point of view of specific development and testing, in addition to considering the actual business in the work, additional control processing of interface access will be required.Secondly, we can not directly reuse the existing interface, when we need to access the interface in an existing cluster, to achieve external service acce
Filter actionThe interface provided by our MicroServices application can be accessed by the client through a unified API Gateway portal. However, when each client user requests the interface provided by the MicroServices application, their access is often limited, and the system does not open all of the microservices interfaces to them. However, the current service routing does not have the ability to restrict permissions, all requests are unreservedl
Filter actionThe interface provided by our MicroServices application can be accessed by the client through a unified API Gateway portal. However, when each client user requests the interface provided by the MicroServices application, their access is often limited, and the system does not open all of the microservices interfaces to them. However, the current service routing does not have the ability to restrict permissions, all requests are unreservedl
Original linkTranslation level is limited, if possible, it is best to read the original, written here is a simple record,Kali Linux is used for testing purposes, while Whonix Gateway has built-in Tor to protect privacyHow to install Kali Linux and Whonix gateways on VirtualBoxBefore you start, make sure you've downloaded all the components you need1:virtualbox: https://www.virtualbox.org/wiki/DownloadsDebian User: sudo apt-get update sudo apt-get ins
Experimental Purpose: Configure a switch and configure the default gateway so that the host of different network segments can connect to the switch remotely telnet loginSecond, the experimental topology diagram is as follows:Second, the experimental steps:1, first to the PC1 host Configuration IP address and gateway(Gateway)--not worthy of gateways may Ping diffe
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
Article title: transparent gateway: run IPchains on 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.
I. Preface
In many universities and research institutions, there are not many legal ip addresses and ports. Therefore, many departments use Proxy servers to access the internet. it is convenient to use Mic
Dg.CGI, the Universal Gateway Interface (Common Gateway Interface), is the interface standard between external applications (CGI programs) and Web servers, and is a discipline for passing information between CGI programs and Web servers. The CGI specification allows the Web server to execute external programs and send their output to a Web browser, CGI turning a simple set of static hypermedia documents fro
Suppose you call a little (local host), live in a large yard (local area network), there are many neighbors (Internet neighbors), the door of the front of the door to see the big Uncle Li, Li is your gateway. When you want to play with a partner in the yard, as long as you shout his name in the yard (ping him), he will respond to you when he hears it and run out to play with you.But you are not allowed to walk out of the door, you and the outside worl
We are aware that by default the user-created UID is starting from 1000, how should we set the UID to start at 2000?A: Here we need to modify a configuration file:under Super User access,vim/etc/loglin.defs this configuration filefind the corresponding parameter, save and exit after modifying, then restart, so the system default UID is starting from 2000.two . GatewaysIntroduction: In the Internet, there are a lot of IP addresses, we can only realize the computer in the same network segment to a
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