All Questions
49
questions
0
votes
1
answer
79
views
What are network ports internally? [closed]
I know there will be multiple ports in the host/computing machine for each of the services that i hosts on the network.
But i want to understand what are these ports internally?
Below is my ...
- 659
7
votes
1
answer
60k
views
Access local webserver on port 8080 in home network using IP-Address
this is quite new to me so I hope it is clear what I try to ask.
On my windows 10 pro I have installed a small application which runs as a webserver on port 8080. I can access it using localhost:8080 ...
- 173
38
votes
3
answers
71k
views
How are source ports determined and how can I force it to use a specific port
When I connect to https://www.google.co.uk this changes to 216.58.198.228:443. Then a connection to me opens on [My IP Address]:63998.
My question is how is 63998 port choosen and is there a way of ...
- 416
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
1
vote
2
answers
7k
views
What are the default nmap options?
Which options are used by default, when the user fires
# nmap target
without any explicit option?
I am going to write the defaults of the three options I consider the most important. It would be ...
- 171
3
votes
2
answers
2k
views
IPTables - Redirect traffic based on country
Is there any way how to allow TCP traffic only from specified countries on a specified port and the rest of traffic redirect to another IP/port using iptables ?
- 125
0
votes
1
answer
766
views
Can two different applications bind the same port on a host if they use different protocols?
my question is quite clear I think. If two applications use different transport layer protocols (e.g. TCP and UDP or something else) can they open the same port number?
How does the OS do the ...
- 1,863
1
vote
1
answer
86
views
Where do I start to troubleshoot this strange activity from my firewall?
I noticed that my firewall yesterday blocked outgoing attempts starting at port 61494 and worked its way up to 62381, making a TCP outgoing attempt at each port once. The remote IP address seems ...
- 131
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, ...
15
votes
5
answers
16k
views
What ports are used by an application [duplicate]
I'm testing an application which opens its own ports (acts as a server for these ports, hence listens at that ports) and where the same application connects to ports bound by other applications (acts ...
- 489
0
votes
1
answer
2k
views
List all open sockets in /dev/tcp/localhost/
Is it possible to list all open sockets in /dev/tcp/localhost/ on a Linux machine?
I want to list all sockets where the following command would return 0:
timeout 2 bash -c "cat < /dev/null > /...
- 127
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
4
votes
3
answers
9k
views
How to force a process transmit over UDP instead of TCP?
I 'm running an ffserver process on a Linux machine, in order to achieve video streaming via ffmpeg. However, there is a delay on video streaming. On ffserver configuration file I define Port 8090.
...
- 439
2
votes
3
answers
7k
views
Is the same port acting as both client and server?
i find something strange in this netstat output. the output is taken using netstat -a -n -o -p TCP command on win 7.
Proto Local Address Foreign Address State PID
TCP ...
- 123