All Questions
15
questions with no upvoted or accepted answers
2
votes
0
answers
2k
views
WebSocket connections originating from local network all use same client-side port (instead of ephemeral) when connecting to local webserver - Why?
I set up a webserver on a virtual machine on my home desktop. I have my router forward several ports (80, 443, etc) to my desktop, when then forwards them via NAT to the virtual machine (see diagram ...
- 21
1
vote
0
answers
264
views
why might nmap on a computer be reporting port 443 as closed on some but not all computers?
When I run nmap event-bridge.twilio.com on roughly half the computers in my network I get this:
PORT STATE SERVICE
443/tcp closed https
When I run it on the other half of the computers in my ...
- 7,232
1
vote
2
answers
3k
views
bitcoin-cli testnet : Could not connect to the server 127.0.0.1:8332
I've installed bitcoin-cli from here
I run the bitcoin core on Ubuntu 20.04 (AWS EC2).
mac-os also experiences similar problems.
Ubuntu 20.04 screen capture for the error messages
The commands I've ...
1
vote
0
answers
745
views
Can not open port 6000 windows xp
I am trying to connect to macincloud using their software and can not. They told me the reason is port 6000 is not open. I spent 3 hours on the phone today with ATT making sure the 6000 port was open ...
- 11
1
vote
2
answers
3k
views
How can I remap outgoing TCP ports?
Is there any way to remap a TCP port from a program were you not can change the port number?
The program talks on port 4321 and I want it to go out on port 14321 on the local computer.
- 11
0
votes
0
answers
847
views
What ports range is safe from taking by Windows 10
I wrote small program and I would like to use some TCP ports. Same ports for a longer period of time. The problem is each time Windows 10 wakes up it makes its mind which ports to reserve for its ...
- 740
0
votes
0
answers
480
views
How can I do a bi-directional Port-Forwarding (flow encapsulation)?
I have two applications: a client and a server which communicate through port 1234. For some reasons this port is blocked on our system but everything works correctly on port 1235 (checked with two ...
- 1
0
votes
0
answers
783
views
After opening port 443 in windows firewall as inbound rule, I cannot see it when I run 'netstat -an'
As an inbound rule on Windows 10 firewall, I added port 443 as TCP connection allowing all types of connections. However, I cannot see it when I run 'netstat -an'. How can I get it so that I see my ...
0
votes
0
answers
998
views
java.exe opens up hundreds of ports on 127.0.0.1 on a windows 10 computer and listens to itself
After I ran netstat -ab with admin right on my win10 computer, which is not running anything "java" related on the desktop nor there is "java.exe" in taskmanager's "detailed ...
- 103
0
votes
1
answer
3k
views
Cannot open a connection from a PC but the host can be reached from other computers
When I use telnet to try a port on a server, I get the following:
telnet x.x.x.x xxxx
Connecting To x.x.x.x...Could not open connection to the host, on port xxxx: Connect failed
...
- 101
0
votes
0
answers
1k
views
Tcp connection target machine actively refused
I have a simple TCP client/server program on two laptops. The server should work fine as I use "netstat -anb" and the server shows up as listening, "0.0.0.0:102", then my client connection failed, ...
0
votes
1
answer
982
views
TCP server listen and client listen windows software
I am using Windows OS on an amazon cloud AWS with static public IP.
On this machine I need to set up a TCP server to listen on port 2204 for raw data that will arrive from a GPS base station over TCP ...
0
votes
0
answers
85
views
Hiding port number from address.
I have centos 6.5 running some web apps. Currently due the following port forwarding rules, I am only able to access my public content using 127.0.0.1:8080/
Is there anyone to just use 127.0.0.1 ...
- 87
0
votes
1
answer
2k
views
Ports 1935 and 843 are getting blocked for no reason
I have Windows 7, and my computer has been blocking ports 1935 and 843 for no reason for a while now. If for example, I try to watch twitch, nothing will work because those two are getting blocked.
...
- 113
0
votes
1
answer
1k
views
stopped a service but outgoing port still exists on netstat -aon
bit more detail....
I have a port, specifically port 2869 for Windows Media Player Network Sharing Service that uses UPnP port 2869, however even when turning off all the sharing possibilities I can ...
- 1