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router products, and even a large number of such articles on the Internet, such as what will be Linux into a router and so on, nothing more than open ip_forward, add a few iptables rules, make a configuration more convenient web interface ... I want to say these are too low-level, even super low-level. I would like to talk about the professional router my point of view, but today is a small birthday, play a day, do not write. Just sort out my plans.What is the low efficiency of Linux
What is a subdomain name, URL forwarding, MX record, wildcard domain name resolution, and what is a subdomain name? A subdomain name is a relative concept and relative to a parent domain name. Domain names have many levels, separated by vertices. For example, if a company's top-level
Domain Name forwarding: the so-called domain name forwarding, that is, URL forwarding, is through the special technical settings of the server, When you access your domain name, it will automatically jump to another
The thing is this: 1. The same server, PHP website is 80 port, C # WebService is 81 port. 2. Client, use Ajax to get data from WebService. Ajax is a PHP web site, with 80 ports. 3. Using Chrome debugging, Error "' Access-control-allow-origin '", checked, said to be a cross-domain problem. Question 1: Is this a cross-domain issue? 4. Searching the internet for half a day, most of the
DNS Subdomain Authorization:Here we only show the subdomain authorization for forward parsingThe parent domain is able to parse the a record of the subdomain (not authoritative, because it is not self-parsing),The subdomain cannot resolve the A record of the parent domain, if it is not to resolve the address process in the parent domain: first go to the root
Implementation of domain name-based layer-7 Forwarding (NAT + reverse proxy) and layer-7 nat In the company's actual office network, because there is only one outbound IP address, port ing is required to provide external services. If multiple services are to be opened to the outside world, this can only be distinguished by ing different ports, which is very painf
Because the company intranet has more than one server HTTP service to map to the corporate extranet static IP, if you use the port map of the route to do, only one intranet server 80 port mapped to the external network 80 port, the other server's 80 port can only be mapped to the external network of non-80 port. Non-80 port mapping in the time of access to the domain
The firmware for the router is dd-wrtTo register a dynamic domain name on the freedns.afraid.org, if the default port cannot use 80, you need to configure the URL forwarding function of level two domain name.The measured 2 months were stable.In addition, in order to prevent the host IP address update frequently, you can perform a cron scheduled command in the bac
name" effect is achieved, while the port ING of the router only achieves "automatically forwarded to the specific port of the corresponding server based on different ports ", it's really great.Knowledge: nginx compilation and installation, basic configuration of nginx Reverse proxy, knowledge of routing Port ing, and knowledge of network domain names.The goal of this experiment is to: en
Because the company intranet has more than one server HTTP service to map to the company's external network static IP, if the port map with the route to do, you can only one intranet server 80-port map to the extranet 80 ports, the other server 80 ports can only map to the outside of the network of 80 ports. Non-80-port mapping in the access time to the domain na
.png "alt=" Wkiol1wbp2xzcw26aal5rg8ahdo731.jpg "/>can see that [email protected] Mail is sent and received properly. 3. The user can receive the mail sent by the external Post Office (tongyue.com)Mail forwarding requires DNS to query MX records, so in the public domain DNS server to have these 2 post Office zone database, the following is the result of Nslookup query650) this.width=650; "src=" http://s3.51
Questions about MAC addresses and IP addresses that change and are not changed during transmission:Conclusion: MAC address is invariant in the same broadcast domain, it will change when it crosses broadcast domain, while IP address will not change during transmission (except NAT), it is summed up as route forwarding Mac unchanged, IP variable .We know a few conce
This article describes in detail how to implement the vro and forwarding technology to expand the virtual network, and introduces the configuration of the VFR function. I believe this article will help you. A virtual network is the trunk line of a virtual system. It connects to a virtual server and storage device. However, virtual systems are generally only used
Ngrok-internal network forwarding artifactGuideToday, I want to recommend you an open-source artifact. I believe that all the children's shoes that have been developed have encountered such problems to varying degrees, that is, the painstaking development model must provide a Domain Name and server that can be accessed from the Internet. This can only be develope
security restrictions. As an example:Suppose a Web site refers to JavaScript at another site, which is compromise and added to JavaScript to get user input and submit it to other sites via Ajax, so that information can be collected continuously.Or a Web site that has a vulnerability that could cause XSS to inject JavaScript script, the script can get the user information through Ajax and submit it to other sites via Ajax, so that information can be collected continuously. If we want to take ad
JavaScript cross-domain Summary and solutions What is a cross-domain 1, the Document.domain+iframe setting 2. Create script dynamically 3. Using IFRAME and Location.hash 4, Window.name realization of cross-domain data transfer 5. Use HTML5 postMessage 6. Using Flash This article is
What is a cross-domain1, the Document.domain+iframe setting2. Create script dynamically3. Using IFRAME and Location.hash4, Window.name realization of cross-domain data transfer5. Use HTML5 postMessage6. Using FlashThis article is from the network (http://f2e.me/200904/cross-scripting/, which is inaccessible), only for personal reading notes, and slightly modified and supplemented.What is a cross-domainJavaS
What is a cross-domain 1, the Document.domain+iframe setting 2. Create script dynamically 3. Using IFRAME and Location.hash 4, Window.name realization of cross-domain data transfer 5. Use HTML5 postMessage 6. Using Flash This article is from the network (http://f2e.me/200904/cross-scripting/, which is inaccessible), only for personal
What is a cross-domain 1, the Document.domain+iframe setting 2. Create script dynamically 3. Using IFRAME and Location.hash 4, Window.name realization of cross-domain data transfer 5. Use HTML5 postMessage 6. Using Flash This article is from the network (http://f2e.me/200904/cross-scripting/, which is inaccessible), only for personal
What is a cross-domain 1, the Document.domain+iframe setting 2. Create script dynamically 3. Using IFRAME and Location.hash 4, Window.name realization of cross-domain data transfer 5. Use HTML5 postMessage 6. Using Flash This article is from the network (http://f2e.me/200904/cross-scripting/, which is inaccessible), only for personal
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