ports

问题 Why does the client end of a connection use high port number(ephemeral ports) whereas the applications listen on typically small port numbers ? Thx in advans, Karthik Balaguru 回答1: Ports numbers under 1024 are called "registered", while those above (limit of 65,535) are called "unregistered". All these two terms mean is that ports under 1024 have standard services associated with them. IE: 53 for DNS, 80 for HTTP, 25 for SMTP, etc. Note they are associated - there is nothing to stop you from

问题 I've configured my server with a default security group, which has the following Inbound rules: | Type | Protocol | Port Range | Source | | All TCP | TCP | 0-65535 | 0.0.0.0/0 | | All UDP | UDP | 0-65535 | 0.0.0.0/0| With these rules, netstat shows the following output: netstat -atn Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:5432 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:1113 0.0.0.0:

问题 I have setup a reverse proxy for the website, and now I want to proxy my game server aswell with the ports stated below, but I realy can't find anywhere how to perform this. Does anyone have an idea? I would like to do this if possible on apache. Am running on ubuntu. RDP TCP Port: 3389 MSSQL TCP Port: 1143 TEAMSPEAK UDP Port: 9987 TCP Port: 9987 TCP Port: 10011 TCP Port: 30033 LOGIN SERVER TCP Port: 15001 TCP Port: 15100 GAMESERVER TCP Port: 15221 FTP 21 回答1: Apache is not an ideal tool for

问题 I'm having some problems with C. I am trying to program a parallel port in Windows 7 Professional x64 in VS 2010 Ultimate. Since I do not have a parallel port, I'm using a converter from USB->Parallel and Windows installed the drivers correctly. I've soldered 8 LED-s on the end of the parallel connector and they are all working fine when I connect the USB into the computer. Now, I would like to control the parallel port via my program written in C which is: #include <stdio.h> #include <dos.h>

问题 I'm having some problems with C. I am trying to program a parallel port in Windows 7 Professional x64 in VS 2010 Ultimate. Since I do not have a parallel port, I'm using a converter from USB->Parallel and Windows installed the drivers correctly. I've soldered 8 LED-s on the end of the parallel connector and they are all working fine when I connect the USB into the computer. Now, I would like to control the parallel port via my program written in C which is: #include <stdio.h> #include <dos.h>

问题 I have a considerably large application that uses MSDTC. How many ports should I open? Is there any way to determine it? EDIT: I know what ports I need to open, I don't know how many I need. 回答1: I think Migol wants to know how big the range of the RPC dynamic port allocation should be. In the KB they mention a minimum of 100 ports Furthermore, previous experience shows that a minimum of 100 ports should be opened, because several system services rely on these RPC ports to communicate with

问题 I am using a COM port in C++. I can not open COM ports with a higher number than 9, for example 10. This is function used for COM port detection: WCHAR port_name[7]; WCHAR num_port[4]; for (i=1; i<256; i++) { bool bSuccess = false; wcscpy(port_name,L"COM"); wcscat(port_name,_itow(i,num_port,10)); HANDLE hPort; //Try to open the port hPort = CreateFile(L"COM10", GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0); //hPort = CreateFile(port_name, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 5 years ago . I've started Django server on localhost:8000 and everything wold be okay, but after clicking on different tabs it changes port to localhost:8002/othertab, how can I set 8000 for default port? 回答1: If you want to change the server’s IP, pass it along with the port. So to listen on all public IPs

问题 I got an email from: saying: (console.cloud.google.com) We noticed that your Google Cloud Project has open project firewalls. This could make your instance vulnerable to compromises since anyone on the internet can access and establish a connection to the instance. The following project has open firewalls: Playchat (ID: playchat-4cc1d) Google Cloud Platform provides the flexibility for you to configure your project to your specific needs. We recommend updating your settings to only allow

问题 Currently docker-compose scale command creates random ports for the new containers. Is there a way to specify a port for the new containers? 回答1: In your docker-compose.yml , postgres: image: postgres:9.5 environment: - POSTGRES_PASSWORD=postgres ports: - 5432:5432 it will bind to 5432 , however, note that you can't have more than one instance on the same node for obvious reason. To use multiple instances on one node you can use dynamic ports like this postgres: image: postgres:9.5