Udp test tools

One of our customers is securing his network, and firewall changes were made that needed to be tested. In this case, the new servers were not yet deployed in that specific network. But… We did want to test the connections before deploying the servers 🙂 In this blog post, I will show you how to create listening ports on a machine to test the connection from another network using netcat on Linux or portqry on Windows.PreparationWindowsLinuxStarting a listenerChecking the portsLinuxUDPTCPWindowsUDPTCP The scriptPreparationIn this case, we are using netcat and portqry as our testing tools, depending on your operating system. Follow the procedure below to install it on your system.WindowsDownload portqry here (Direct link) and save PortQryV2.exe to a temporary location. Run it and extract the files somewhere on the system that you will use to test the ports. It can test both TCP and UDP.LinuxDepending on what Linux flavor you’re running, the installation could be different than the command line below in which I install it on a Ubuntu machine using apt getsudo apt install netcatStarting a listenerAfter running the command below in a PowerShell prompt from within the directory in which you saved the script, the New-Portlistener PowerShell function is available in your session (Alternatively, you could run it from PowerShell ISE). .\New-PortlistenerNow that the function is available, you can start a TCP listener on port 9001, for example by running this command:New-Portlistener -UDPPort 9001After running, you will see this output on your screen:You can press Escape to stop the listener, and it should show this as the output:Stopped listening on UDP port 9001If you are trying to start a listener which is already active, it will show an error (In this example, I used TCP port 3389 which is the default RDP port)WARNING: TCP Port 3389 is already listening, aborting...Note: Windows Firewall could give pop-ups when starting the listenerChecking the portsIf you have a TCP or UDP listener port running on a Windows machine, you can start testing the connection from a Windows or Linux machine in another network.LinuxUDPTo use netcat for checking a UDP connection, you can

]IP-Tools is a group of 7 useful networking tools in one convenient place.NEWT scans all remote networked machines on single or all domains and attempts to retrieve a wealth of detailed information. simplewall (WFP Tool) allows simple Windows Filtering Platform (WFP) configuration for your PC's network activity.SoftPerfect Network Scanner is a multi-threaded IP, NetBIOS and SNMP scanner with a modern interface and several advanced features. Network Notepad is a specially designed freeware application for creating interactive network diagrams. IPerf2 2.2.1 [ 2024-11-06 | 2 MB | Freeware | 11|10|8|7|Linux|macOS | 4828 | 5 ]IPerf2 measures TCP and UDP performance with metrics around both throughput and latency using network sockets.Packet Sender can send and receive UDP, TCP, and SSL on the ports of your choice between a server and client computers.NetworkUsageView pulls network usage details and displays them in an easy-to-read graph.NetOptimizer can help to speed up and optimize the Internet connection on your machine. ShowPublic IP displays your public IP address and provides comprehensive information about your geographical (lat/long) location. Network Speed Test is a user-friendly tool that accurately measures the download and upload speed of your internet or LAN connection. DNSLookupView permits you to monitor the details of all DNS queries sent via the Windows DNS Client service.IPSwitcher permits you to switch IP configurations right from the tray menu. MiTeC Network Scanner is a robust, multi-threaded Port, IP, NetBIOS and SNMP scanner with many advanced features intended for both system administrators and general users who are interested in computer security.CobraTek WiFi Manager will allow you to manage different aspects of your Wi-Fi network.EMCO Network Software Scanner allows you to compile a list of installed applications and updates from PCs located in a LAN/WAN. nWOL 1.7.81 [ 2024-08-19 | 154 KB | Freeware | 11|10 | 270 | 5 ]nWOL allows users to remotely power on a computer through the Wake on LAN feature through an efficient interface. ProcessTCPSummary is a simple portable option that gathers and displays all processes that have TCP connections or listening UDP ports.Colasoft Packet Builder lets you create custom network packets to evaluate and test

Networking Projects in C for Linux and WindowsThis repository contains a collection of projects written in the C programming language, focused on network operations for both Linux and Windows operating systems. These projects represent my work and contributions in networking under these platforms.Linux Projects in CThis section includes Linux projects written in the C programming language, with a focus on networking operations.eserv: A collection of Linux projects, including an implementation of a UDP speed test tool for measuring the performance of UDP traffic between two endpoints over a network.ping_utility: A C implementation of the ping utility, based on BusyBox's ping utility (specifically the version from 1999).pingtest: A C implementation of a network latency test utility, similar to the ping utility but designed for more specific testing requirements.Windows Projects in CThis section includes Windows projects written in the C programming language, focusing on networking functions.Win_Old_TFTP_project.c: A TFTP server implementation with UDP packets for the Windows operating system.Win_TFTP_project_on_c.c: A partial revision of the previous TFTP server implementation.eservThe "eserv" repository contains Linux projects written in the C programming language. One of the projects is an implementation of a UDP speed test tool that measures the performance of UDP traffic between two endpoints over a network.To compile and run the software in this repository, ensure that GCC is installed in your Linux environment. Use the provided Makefile to compile the software. Run the command make release in the terminal to clean any previously compiled binaries and then compile the main.c file into a new binary named "eserv".The main executable, "eserv", runs a UDP speed test between two hardcoded IP addresses: "192.168.1.1" (server) and "192.168.1.2" (client). The test is repeated 100 times, with each test sending 1500 packets of size 1500 bytes from the client to the server.Documentation of the CodeThe repository mainly consists of a single C file, "main.c", and a Makefile. The "main.c" file includes the definitions for two structures T_SpeedTest and T_packet, and two functions udp_speedtest() and main().StructuresT_SpeedTest: This structure holds parameters necessary for the speed test, such as the server IP, packet count, MTU data, client count, client IP, and statistics

The case with UPnP setup? @vMACUnder firewall rules, make an IPv4 allow LAN to any rule with the advanced option checked "Allow IP options". Test again after and see what happens. @Marc05 said in Test Request: UPnP Fix for Multiple Consoles playing the same game / static port outbound NAT:@vMACUnder firewall rules, make an IPv4 allow LAN to any rule with the advanced option checked "Allow IP options". Test again after and see what happens.Still STRICT You tried playing the game?Try following the steps in this guide: test again, first without the outbound NAT rules, and second with them. Make sure the test involves playing a game, and not just doing a network test in the console. Upgraded today to 2.5.0DEVELOPMENT and getting this error miniupnpd 80987 setsockopt(udp, IPV6_RECVPKTINFO): Invalid argumentAfter looking at the redmine, it did't look like i needed to update miniupnpd.Any ideas or more info needed? Tested today with a base installation of 2.5.0DEV and two PS4s.Base config, just UPNP enabled and Pure NAT.I get NAT Type 2 on one console but always type 3 on the second.I can see the following:miniupnpd rules/nat contents:nat log quick on ix0.10 inet proto udp from 10.XX.XX.XX port = 9308 to any keep state label "10.XX.XX.XX:9308 to 9308 (UDP)" rtable 0 -> XX.XX.XX.XX port 9308rdr pass log quick on ix0.10 inet proto udp from any to any port = 9308 keep state label "10.XX.XX.XX:9308 to 9308 (UDP)" rtable 0 -> 10.XX.XX.XX port 9308So UPNP seems to be working but for some reason only allowing one console, any additional debugging I should do here? It seems that static ports on outbound NAT is still necessary. Make sure to create that rule as well. @Marc05 static port NAT is a workaround, and not a nice one.The implementation we hope for is that two