Questions tagged [udp]
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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OpenVPN UDP over 4G PPP link - No buffer space available
I’m looking for help debugging an issue I’m facing when using OpenVPN (UDP) over a 4G PPP link. I’m trying to understand what’s causing unstable behavior and frequent "No buffer space available (...
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show udp port number in tshark trace
I am taking a tshark trace with udp traffic and I want to see the numeric ports that are being reported. I have already used tshark -n before so that I could see the ports with tcp traces and I do not ...
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Built-in (windows) test for open UDP ports on a specified IP
Referring to this question it is possible to test if a certain TCP port is open on a specified IP via powershell.
test-netconnection -computername 8.8.8.8 -port 53
Is there a similar command for UDP ?...
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udp packets not received between peer win 10 hosts, but DO arrive if sender on same host
I am a networking newbie!
Nothing fancy here. Hosts on same subnet (192.168.1.6 and 192.168.1.26)
Using Hercules Setup to send/receive UDP messages on both hosts.
a. Running two instances of Hercules ...
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I'm behind a CGNAT with my 5G router, how can I open my ports (TCP and UDP)?
My situation: A few weeks ago I was still using an ASDL router which had its own public IP so whenever I needed to open a few ports (both TCP and UDP) to host game servers for some friend, all I had ...
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Trying to understand unexpected behaviour with Ethernet Flow Control
I have a 100 Mbit switch connected to three 100 Mbit cameras and 100 Mbit computer. The bandwidth limitation comes from the cables in use and cannot be altered to solve the problem because i am ...
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Why is my Sony TV is sending UDP packets to my firewall? [closed]
I've noticed that the Sony Bravia TV is sending UDP packets to my IP and they are blocked by UFW (firewall):
Jan 09 16:56:09 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:...
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A UDP Server can't send response back to sender via router
For testing purposes I have written a UDP Client and a UDP Server app listening on a specific free port. This works well on a local LAN between computers but not when I put the UDP Server app on a ...
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How can I receive the responses to my broadcast requests through PF?
My server's pf.conf file has these lines (among others for other protocols):
block in proto udp all
pass out proto udp all
Now this server needs to check the state of some neighboring machines ...
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Can't send UDP packet via DDNS domain name
I'm trying to set up WireGuard and am running into multiple issues. To debug, I'm using WireShark to verify if any packets make it to my server, which runs on a laptop in a private network behind a ...
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How does the central server know how to send the message to the other client?
I have been learning as a hobbyist about NAT Traversal using the RFC and I am confused about how relaying would work. Let's say I have a centralized server on DigitalOcean, hosted on a public address. ...
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SSDP Discovery not working for IP address other than WSL's instance IP
I am trying to port a process from Windows to WSL/Linux. Earlier, two Windows process were communicating through TCP connection after successful SSDP discovery. Now, I want similar communication to ...
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Traceroute using UDP instead of ICMP?
I am playing a game named "Planetside 2" and since a few days many users including me have high ping issues on a specific server, while others have not.
Therefore I wanted to try to ...
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Ping varies on different Ports with the same IP (Gaming related)?
I apologize if my question is "dumb" and not in the right category, I'm new here and I am genuinely curious about it.
Recently, there have been numerous complaints from users of the game ...
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Java : What calls could be executed behind the scene to open a UDP socket on port 7500?
Executing nestat shows the UDP protocol being accessed on port 7500
> netstat -naptu | grep 7500
udp 0 0 0.0.0.0:7500 0.0.0.0:* 13500/java
udp ...
