[Solved] How to know if a DNS server is an open resolver?

The way we did it in the Zonemaster project was to send the name server in question a SOA query with the RD flag set for the almost certainly non-existent name xx–domain-cannot-exist.xx–illegal-syntax-tld. If the response is NXDOMAIN, the name server has performed a recursive query and is therefore an open recursor. If the response is … Read more

[Solved] Can I hack people connecting to my server? [closed]

In general terms, yes, it’s possible. Game clients receive data from their servers, which they expect to be in a particular format. If the server is modified to send mis-formatted data, the result could easily be to trigger a buffer overflow or other exploitable bug in the client. See for example http://threatpost.com/researchers-discover-dozens-of-gaming-client-and-server-vulnerabilities/100744 solved Can I … Read more

[Solved] What do big companies use to build up their dynamic html pages [closed]

There are many ways to build up dynamic html pages, depending on what stack you use. What you are searching for are so called “Templating engines” – on the Java example there is a good article about template engines for java web applications: https://hackernoon.com/java-template-engines-ef84cb1025a4 If you use Python and Django as example, then you’ll probably … Read more

[Solved] How to establish a Server PC to host my website?

I went back over your question and this thread and this is what I recommend. You are looking to create a hosting environment for others from what I am understanding. Regardless the platform you select (linux or windows) having a beefy machine is going to be key to this. I would recommend at a minimum … Read more

[Solved] Simple sharing text and number App(Client-side) over internet [closed]

There are multiple ways to approach this problem (REST, WebSocket, etc.) I recommend using sockets in this case but I’ll leave it up to you to read up on the pros/cons of different approaches. Socket.IO has a popular Android library for real-time bidirectional event-based communication between two nodes. At a high level, to use Socket.IO … Read more

[Solved] Simple sharing text and number App(Client-side) over internet [closed]

Introduction Sharing text and numbers over the internet can be a daunting task, especially when it comes to developing a client-side application. Fortunately, there are a few simple solutions that can help you quickly and easily share text and numbers over the internet. In this article, we will discuss how to create a simple sharing … Read more