All Questions
49
questions
2
votes
1
answer
1k
views
How to monitor TCP and UDP port changes
I am running software on a server that may be turning off some ports and need to find out what it is. I have the ports I need to check. I just need to find out what is turning them off. How can I ...
- 23
5
votes
2
answers
7k
views
Detect what outgoing ports are bypassed by firewall
My school has a firewall which limits most outgoing ports. There're only TCP/80, TCP/443, TCP/21 allowed. Is there's a way to find out all the outgoing port allowed by the firewall?
My current idea: ...
- 2,667
1
vote
3
answers
10k
views
Open TCP port in Windows 7 and read incoming data, what program to use?
I have an external device which can connect over GPRS to the Internet using a SIM card and I want to see what data it sends. I can program it to use my computer as a server and then use a program to ...
- 25
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
1
vote
1
answer
6k
views
TCP Connections/Session and Ports
I have some basic questions about ports and sessions.
Since all these are related and simple questions, I've asked them together:
I understand that for creating a connection we need a socket (ip+port)...
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
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
0
votes
2
answers
398
views
Enabling access to a home server from "Internet" side
I wish to enable remote access to my linux home server, so I can use it when I'm not home.
I tried doing so using port forwarding as follows:
http://<RouterInternetIP>:<SomePort> => ...
2
votes
2
answers
1k
views
Program to record data transmission between two computers using a TCP port
I am looking for a way to view data being transmitted over a TCP port between two computers.
Is there a software package that allows this? I suppose I could script something to re-route data coming ...
- 951
9
votes
6
answers
18k
views
Why is port 1111 open, and is it safe to be?
I'm new to systems administration and have a server running a website with HTTP (at port 80), HTTPS (at port 443) and SSH (at port 22).
I'm running Ubuntu 11.04.
I did an Nmap port scan using my ...
- 193
2
votes
1
answer
3k
views
TCP port prioritizing on switch/router (QoS)
I have some HP ProCurve series Switch. There is a QoS option for prioritize traffic by TCP/UDP port. I set two ports: one with highest priority and another with lowest. Then I performed tests to ...
- 123
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
4
votes
1
answer
8k
views
What is the purpose of ports?
I have a few questions in regard to the following explanation of ports I found.
The Application layer talks to the Transport layer through a port.
Ports are numbered and standard ...
- 346
5
votes
3
answers
10k
views
Cannot connect to guest OS from host OS
I have installed OpenSUSE on VMWare player as guest OS and my host OS is Windows XP. What I want to achieve is to send message from my host (i.e XP), say on port 7000 and receive it on a specific port ...
- 220
3
votes
1
answer
6k
views
How do networking ports work? Can I configure the ports that client and server use?
Let's say i have a "server" program listening on address 1.2.3.4:69 (i.e. remote port 69)
When i connect from a "client" program to it, typically i would specify the IP address + port of the target ...
- 471