UDP stands for User Datagram Protocol. With UDP applications can send messages (datagrams) to other hosts on a network without requiring prior communications to set up special transmission channels or data paths.

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Comparison: UDP vs TCP [closed]

UDP vs TCP. What are these ? What are their Differences, pros and cons ?
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Which element of network refused connection

How could I determine, which element of the network actually refused/closed the connection?
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9k views

How to stream my media via vlc using udp streaming method?

I would like to know how to stream my media via vlc using udp streaming method?
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229 views

Detect all computers running a service on a network

I'm trying to write a file synchronization protocol presently (consider it a hobby, I know there are plenty of file synchronizers out there) and I wanted to create a way to automatically sync things ...
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2answers
4k views

Mcafee Host Intrusion Protection blocks all-in-one network printer

I just bought a new HP Officejet 6500 printer. It has a built-in ethernet port, so I happily connected it to my network. While I was playing around with it, I saw that it stopped responding ...
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3answers
932 views

Force OS X to use SOCKS5

Currently I am using an OpenSSH session (with the -D flag to enable dynamic application level port forwarding) as a SOCKS proxy while I'm accessing the internet through an unencrypted wireless access ...
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1answer
594 views

Windows 7: how to redirect dhcp traffic to alternative port

I was hoping someone could help me find a way to force DHCP traffic to use an alternative port on Win7. I need windows to send and listen for dhcp traffic on a port other than 67/68. I have tried to ...
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3k views

How to deliberately introduce a delay for incoming UDP packets

I want each packet (that match iptables rule) to be delayed by some fixed time interval. How to to this? Preudocode: iptables -A INPUT -p udp <more conditions> -j DELAY --delay 50000 # delay ...
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UDP blocked by Windows XP Firewall when sending to local machine

I work for a software development company but the issue doesn't seem to be programming-related. Here is my setup: Windows XP Professional with Service Pack 3, all updated Program that sends UDP ...
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748 views

Can I use TCP as DNS query protocol on Mac OS?

I'm using Mac OS, Snow Leopard 10.6.2, and I'm suffering from UDP packet loss during DNS query. So my web browser is too slow to surf internet nicely. But it worked very well when I tried a DNS query ...
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2answers
5k views

What does this UDP Packet mean?

I'm total newbie at tcp/ip and I was experimenting with Wireshark. What this mean: 1824 578.194204 xxx.xxx.xxx.xxx yyy.yyy.yyy.yyy UDP Source port: 17500 Destination port: 17500 In data I ...
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How to generate UDP packet

I want to generate UDP packet to test a program, something equivalent to using telnet to test TCP port (Can telnet generate UDP packet?) How can I do this?
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486 views

How do I establish a connection between 2 computers on different subnetworks?

computer A(192.168.1.134) needs to establish a UDP connection to computer C(192.168.0.30). As you can see both are on a different subnetwork. Now I have computer B which has 2 IP addresses, one for ...
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Why is it bad to have open ports?

Here's something that has always baffled me. Why is it bad to have open ports on your computer? Assuming you don't have a virus on your computer or some other program listening to a port that may ...
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403 views

What typically uses port 44380?

A company just asked me to open port 44380 in my firewall so that their software could work. This made me wonder... what is the customary use for port 44380?
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3answers
2k views

Good process specific packet sniffer / viewer?

I am looking for a good, free or not free, packet sniffer. The main feature I am looking for is an ability to watch a chosen process and view / read all of the data it is sending or receving. Also I ...
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2answers
5k views

Netcat stops listening for UDP traffic

I am using netcat on some Linux machines (see this other question), but seeing some unexpected behavior. Unlike the guide in the accepted answer, I am not using UDP tunneling to do DNS queries. I ...
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5answers
24k views

UDP traffic through SSH tunnel

The title pretty much sums it up. I would like to send UDP traffic through a SSH tunnel. Specifically, I need to be able to send UDP packets through the tunnel and have the server be able to send ...