Check if there is an environment variable called: $SSH_CLIENT OR $SSH_CONNECTION (or any other environment variables) which gets set when the user logs in. Then process it using the user login script. Extract the IP: $ echo $SSH_CLIENT | awk ‘{ print $1}’ 1.2.3.4 $ echo $SSH_CONNECTION | awk ‘{print $1}’ 1.2.3.4
Indeed, SCTP is used mostly in the telecom area. Traditionally, telecom switches use SS7 (Signaling System No. 7) to interconnect different entities in the telecom network. For example – the telecom provider’s subscriber data base(HLR), with a switch (MSC), the subscriber is connected too (MSC). The telecom area is moving to higher speeds and more … Read more
Starting with Chrome 38 you can do this without any plugins. Just click inspect element (or F12 hotkey), then click on “toggle device mod” and you will see something like this: Among many other features it allows you to simulate specific internet connection (3G, GPRS) P.S. for people who try to limit the upload speed. … Read more
open cmd type in netstat -a -n -o find TCP [the IP address]:[port number] …. #[target_PID]# (ditto for UDP) (Btw, kill [target_PID] didn’t work for me) CTRL+ALT+DELETE and choose “start task manager” Click on “Processes” tab Enable “PID” column by going to: View > Select Columns > Check the box for PID Find the PID … Read more
I liked Mark Brackett’s answer so much that I did my own quick implementation. Here it is if anyone else needs it in a hurry: public class NetworkConnection : IDisposable { string _networkName; public NetworkConnection(string networkName, NetworkCredential credentials) { _networkName = networkName; var netResource = new NetResource() { Scope = ResourceScope.GlobalNetwork, ResourceType = ResourceType.Disk, DisplayType … Read more
If you don’t mind the port used, specify a port of 0 to the ServerSocket constructor and it will listen on any free port. ServerSocket s = new ServerSocket(0); System.out.println(“listening on port: ” + s.getLocalPort()); If you want to use a specific set of ports, then the easiest way is probably to iterate through them … Read more
People say that the major thing TCP gives you is reliability. But that’s not really true. The most important thing TCP gives you is congestion control: you can run 100 TCP connections across a DSL link all going at max speed, and all 100 connections will be productive, because they all “sense” the available bandwidth. … Read more
A simple but relatively insecure way would be to use the –net=host option to docker run. This option makes it so that the container uses the networking stack of the host. Then you can connect to services running on the host simply by using “localhost” as the hostname. This is easier to configure because you … Read more
This generally means that the remote side closed the connection (usually by sending a TCP/IP RST packet). If you’re working with a third-party application, the likely causes are: You are sending malformed data to the application (which could include sending an HTTPS request to an HTTP server) The network link between the client and server … Read more
Twisted is complex, you’re right about that. Twisted is not bloated. If you take a look here: http://twistedmatrix.com/trac/browser/trunk/twisted you’ll find an organized, comprehensive, and very well tested suite of many protocols of the internet, as well as helper code to write and deploy very sophisticated network applications. I wouldn’t confuse bloat with comprehensiveness. It’s well … Read more