0
votes
3answers
629 views

Source Address / Source Port vs Destination Address / Destination Port

I am new to TCP/IP and trying hard to learn basics. Well, I really wonder about inbound rules and outbound rules of Firewall and concept of source adress:port, destination adress:port. For example I ...
2
votes
1answer
95 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 ...
0
votes
1answer
100 views

Firewall between Client and Server - Which ports do you open?

I want to know the following: (exam type question) When you have a client-server system, that uses uncommon ports (e.g. in range 48000 - 49000), and you have a firewall between the client and the ...
11
votes
1answer
523 views

Determining what process has bound a port (without listening) on Windows

If I want to find out what process is listening on what socket, I can use netstat/TCPview and will immediately see it. However, it is possible to bind to an address without listening. If this is done, ...
4
votes
2answers
56k views

How to check if TCP port 1723 and GRE protocol port 47 are blocked or not in windows 7?

I am trying to connect to a VPN Server (BestUKVPN) but im failing each time I try. I get the 691 error but the username and password are OK. I searched and I am told that the port 1723 or GRE protocol ...
0
votes
0answers
3k views

Simple way to open Port for Transmission for a Mac Snow Leopard

I am a complete noob when it comes to TCP/IP, but would like to open up my port for the Transmission bit torrent client on Snow Leopard Mac. Also, I am based in the UK if that has any relevance.
1
vote
2answers
18k views

How to get a Port to listen on Windows 7?

I have followed the step by step instruction to open a port on Windows 7, setting both Inbound Rules and Outbound Rules to following specification: Protocal Type: TCP Local Port: 55000 Remote Port: ...
0
votes
1answer
653 views

Open port in Window 7 for local client-server development and debugging

I am writing a C# console application for Windows 7 that can send and listen to packets (client or server). Since I only have one computer, I will have to debug and test my code locally. I first ...
4
votes
2answers
26k views

How to kill a particular tcp connection in windows?

On Linux we can kill an Established TCP Connection using tcpkill command. For example, to drop all connection to/from a particular IP: tcpkill host ipaddr Or similary to kill all connection ...
2
votes
2answers
1k views

Is my ISP blocking the ports 5050 and 6060

I want to find out whether or not my ISP is blocking the ports 5050 and 6060 which I need for my voip software on my iPhone. I'm using a 3G stick with a prepaid plan, and I'm using the internet ...
2
votes
3answers
3k views

SQL Server Ports

The Microsoft website states The firewall must be configured to permit port 1433 incoming (or the port numbers that SQL Server listens to on TCP/IP), and ports 1024 to 65535 outgoing. Does this ...
1
vote
1answer
132 views

TCP source and destination ports switch

Why do i see source and destination ports switching with each other in a packet capturing application?
1
vote
1answer
344 views

Program that listens to a TCP/IP port for text and execute (emulate) a key stroke on keyboard?

I am looking for a program to be run on Windows Vista that would listens to a TCP/IP port and execute or emulate a keyboard's key stroke (or a combination of keystrokes, such as Ctrl + D). It's like ...
39
votes
2answers
84k views

What are CLOSE_WAIT and TIME_WAIT states?

When I do netstat -a on my Windows machine, I get a listing of the ports with one of the four states: LISTENING CLOSE_WAIT TIME_WAIT ESTABLISHED What do CLOSE_WAIT and TIME_WAIT mean/indicate?
0
votes
1answer
594 views

Win 2k3 Connections Limit per ip:port

I want to limit connections number per ip on specific port. Should I use some firewall or anything else? Advice please. P.S. Port doesn't have to be port 80, or 3389. It can be any port
2
votes
1answer
1k views

Smokeping monitoring IP address and port

I have successfully install smokeping on my Ubuntu Karmic machine and am monitoring servers. I need to be able to monitor an IP address and a port, can someone tell me how I do that? I looked into ...