I have make sure the VNC server has been started and I have check the port of 5901 and that it is Listening and I open the firewall for this port.But I also can't connect the server.Can you help me?Thank you!
Related
On a Windows Server 2016 Standard, 64-bit, x64-based server, I try to connect to a specific port (1807) to access a third party application using Eclipse. However, an as yet unidentified process is closing it.
How do I find out what?
There seems to be lots of info about how to close ports on SO, but can't find anything about how to monitor what is closing it.
According to a co-worker who looks after the firewall the port is open. Although I also tried running Eclipse on the server and connection to the port inside the firewall. Tried connecting via a testing tool and get "The underlying connection was closed. The connection was closed unexpectedly."
The message connecting via Eclipse is "Cannot join host http://myHost:1807 - Possible reasons could be the host is temporarily unavailable, DNS cannot resolve this name. The port is not open to the outside. The host name is mispelt. The host response has timed out. The host has multiple network cards but one of them is not responding. The newtwork infrastructure does not allow the access to this host".
Eclipse connects via another port OK.
Please let me know if you have any ideas about how to solve this.
You can get the PID of port closing program by netstat -a -n -o. Then by using
tasklist /fi "pid eq 6368" you can find the name of program. 6368 is the pid of program that's blocking the port
I'm having problems connecting to my WebSocket server through the VirtualBox port forwards. The forwarding rules themselves work just fine (I use them all the time for http and ssh) and the WebSocket server does just fine aswell, when connecting from within the VirtualBox guest (via wscat for example). When I try to connect to the server from my host it says "Connection Reset" in my browsers and "error: Error: socket hang up" in wscat. If I remove the port forwarding rule from virtualbox or change the port the server is running on (which is more or less the same thing), it says "error: Error: connect ECONNREFUSED", which means that there is at least something going on. The WebSocket server console does not say anything when connecting from the host.
Well, this is embarrassing. The only thing I had to do was change the address for the WebSocket server to run on to 0.0.0.0 instead of using localhost ...
I am trying to run ftp client and server.
The connection successful only if both server and client windows firewall is turned off.
I tried to turn the firewall on and allow roll for:
1. (inbound and outbound) tcp port 20-21 allow
2. allow end point communication for server-client
However, my problem still not solved.
Anyone has any other ideas?
Thanks ahead
Fixed it. The server throw an exception. I found it when i created log file on both server and client side
I have a client which is intended to connect to a server. For the client, the remote TCP port number is fixed(i.e. 102). I can NOT change it(while I can change the remote IP address). However, the TCP Port number the server is listening on is fixed as well(i.e. 1024) and I can NOT change it too. These two port numbers are different. I want to make the client connect to the server smoothly.
At the first, I had a idea that I setup a proxy listening on localhost:102 and the client connect to 127.0.0.1:102. Then this proxy redirect these TCP traffic to the real address RemoteServerIP:1024. But I found on my windows, there was already a process which is listening on 0.0.0.0:102 and I can NOT change its listening port. So this idea can NOT work.
Thank you very much.
if you cannot do it on the same windows machine running client, why not try to do it on another (linux maybe) machine?
I am using Boost asio in Visual C++. I am trying to connect to a static IP which listens TCP on port 1222. unfortunately i can only connect with Lan and cannot connect from another Lan to the TCP listening PC(203.143..).
It connects perfectly with the EC2 server. Is it something to do with firewall. but when i run the app it ask for the user to allow firewall for the specific port. I can post my code but i guess it's not something to with the code.
Usually a firewall on the server side (the PC you are trying to connect to) have to be configured to allow incoming connections.
Firewall on your side should be OK, it usually allows any type of outgoing connections.
I don't know what you meant by "the app ask for the user to allow firewall for the specific port" (clarify).