All Questions
462
questions
1
vote
1
answer
38
views
How to Increase SNAT Ports for Azure App Service Plan P1v3
I am currently using an Azure App Service Plan P1v3, which hosts 11 app services. These services are integrated with a same Virtual Network (VNet) . Despite optimizing my code to close connections ...
- 361
0
votes
0
answers
25
views
Apache2 web page not loading from outside network/internet
I am struggling with an Apache2 web server and cannot load the page from outside the local network.
The server is running on a PC in local network, connected to the router with internet access, with ...
-1
votes
1
answer
49
views
Source port random assignment by windows operating system [closed]
I am new to TCP/IP and trying hard to learn basics. When I was using wireshark, I noticed that the source port of my application keeps on changing. Some of my colleagues shared that this is a normal ...
0
votes
0
answers
199
views
Docker container cannot be accessed through port 443
I have running container:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS ...
- 199
1
vote
0
answers
275
views
Low active TCP connections vs high \Device\Afd handles
Every few months on a Windows server where I have a few .NET Core 3.1 web applications running in IIS, I see TCP port exhaustion errors being logged, with all the associated symptoms happening (unable ...
- 14k
-1
votes
1
answer
85
views
how to specify ports number for both sides of a tcp connection (client and server side) in c using sockets
I am trying to replicate this diagram in C:
I have created the request line connection fine, but I can't find any information that has worked on how to create a connection where both sides have ...
- 9
0
votes
2
answers
222
views
Two applications using the same HTTPS port?
I read somewhere that two different applications/processes cant use the same port at the same time.Suppose i have facebook open on one of my tabs in the browser and youtube playing a video on another ...
0
votes
0
answers
86
views
What layer 4 protocols have port numbers?
What layer 4 protocols (specifically, the ones that have a protocol number registered with IANA) use port numbers?
I know TCP, UDP, SCTP (Stream Control Transmission Protocol), and DCCP (Datagram ...
- 39
0
votes
0
answers
60
views
How to provide a single binary TCP stream to many clients?
I have a receiver, which provides a binary stream output on port 3001. But only one client can connect at the same time.
E.g.
With first netcat IP-ADDRESS 3001 I get binary data. If I start the second ...
- 1
0
votes
1
answer
900
views
Jedis DockerFile : Failed to connect to any host resolved for DNS name
so I'm trying to dockerize my class , and when running the container I keep getting this Exception .
Here is my DockerFile :
FROM ubuntu
RUN apt-get update && apt-get install -y openjdk-17-...
- 13
0
votes
0
answers
39
views
How can I check for SYN packets using multithreading?
I am developing a Python program that detects a port scan. In order to do that I need to listen all the ports and check for received SYN packets and I want to use multithreading to check for as many ...
- 1
-2
votes
3
answers
489
views
Two TCP clients with same port connecting to different servers not working
Background
Since TCP sockets are identified with src IP/port and dest IP/port, I thought that two having TCP clients on same IP address with same port is possible if each of them connects to different ...
- 347
0
votes
0
answers
77
views
Can't stop listening on local ip SimpleTCP [C#]
So I have my form1.cs and a different class called TCP-Control.cs. This is the tcpcontrol below. The form1 buttons clicks just simple call these methods.
public SimpleTcpServer voidRayServer = new ...
- 21
0
votes
0
answers
73
views
Why 10049 error occurs in udp communication even though ip and port are entered correctly
DWORD WINAPI socketRead(void *lpVoid)
{
while (true)
{
// UDP socket
WSADATA data_s;
WORD version = MAKEWORD(2, 2);
// socket start
int wsok = WSAStartup(version, &data_s);
...
- 9
0
votes
1
answer
2k
views
Why is this port still open after I killed the process which occupied this port?
I typed this command in Windows cmd：
netstat -nao | findstr 9300
The output is:
TCP 0.0.0.0:9300 0.0.0.0:0 LISTENING 6676
TCP 10.206.90.163:59300 180.181.184....
user19470144