Questions tagged [broadcast]

Broadcast refers to sending a message to all devices on the same LAN.

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333 views

How to duplicate mouse cursor movement and clicks on windows?

Basicly what I'm trying to achieve is when moving my mouse I want to have second cursor duplicating everything I'm doing with my mouse ideally on second monitor or at least in second window or maybe ...
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Synology NAS Hibernation issues due to SMB broadcasts

I'm another user going around this merry-go round again. I purchased a Synology NAS DS718+, installed Plex and Docker (calibre-web-server), and have found the NAS is never sleeping. After looking at ...
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Receive UDP packets from multiple broadcast servers

I have two sensors which broadcast their data using UDP. I configured them to use different ports. If I connect only one sensor, I receive the packets using nc -ul port without any trouble. If I ...
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When is the broadcast MAC address and broadcast IP address used in a network?

I know that to discover the unknown details (IP/MAC) in a network the broadcast address is used. For example: DHCP client broadcasts request to get network detail from DHCP server, one host gets MAC-...
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What happen underneath when I type 255.255.255.255 in web browser?

I've learnt that 255.255.255.255 is broadcast address, then I'm curious what happen underneath if a web page element src is http://255.255.255.255 or I type 255.255.255.255 in url bar, will it ...
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Does a MAC-layer broadcast on Wi-Fi get sent to each client directly, or through the router?

I'm trying to find a way to get my Android device to send frequent Wi-Fi packets into the air so I can detect them from multiple base stations for interior positioning. The canonical way to do this ...
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135 views

Send phone audio output to PC without affecting phone mic? [closed]

I want to be a game streamer and use my phone to play mobile games. Therefore, I need to send my phone's sounds to my PC. I found a tutorial that suggested using the 3.5mm headset jack and a USB sound ...
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217 views

Disable terminal broadcast messages in Linux

I am relatively new user to Linux on the desktop and have recently started to connect to several work/personal VPNs using the following command: sudo systemctl start openvpn-client@Personal This all ...
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234 views

Does UDP broadcast translate into 802.11/Ethernet broadcast?

Setting 1: 1 master access point and 2 slave stations with 802.11 chipsets. Setting 2: 1 master PC connected to 2 slave PCs through a switch and Ethernet cables. Scenario: An application running at ...
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Why don't all computers show in Net View?

This is for a Windows environment. Either in a workgroup or domain environment, why don't all computers show up in Netview or Network (via Explorer)? Assuming all computers are online and pingable, ...
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97 views

Stream a MP3 to a media device on a schedule

With a lack of a wired PA system we are utilizing speakers connected to few Linksys RE6700 devices (that we were already using as WiFi extenders) to make audio play in different areas of a building. ...
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Can I disable the broadcasting on this machine?

I've been given access to a Windows Server 2008 R2 Enterprise machine that was provisioned like this: network 1.2.3.136/30 gateway 1.2.3.137 IP 1.2.3.138 broadcast 1.2.3.139 netmask 255.255.255.252 ...
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Directed broadcasts to other than own IP subnet are received until socket shutdown - why?

My two hosts reside on the same Ethernet segment. Host A is 10.1.0.1/16, host B is 10.1.0.2/16. A sends directed UDP broadcasts to 10.1.255.255 and a UDP listening socket bound to INADDR_ANY on B ...
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Why change the IPv4 default broadcast address of a particular network?

Some operating systems allow the user to change the broadcast address of a network, e.g. in Linux this can be done by using the SIOCSIFBRDADDR ioctl. Why is this necessary? In which scenario would an ...
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Remote shutdown of a group of linux servers (SNMP/Bonjour/socat?)

I have a group of linux servers on my subnet that I want to be able to remotely shutdown from a master machine. I don't want the non-master machines to have to coordinate with the master in advance, i....
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1answer
4k views

Block ARP requests (or broadcast message, if possible) from A SPECIFIC HOST in a subnet

My ISP provide username-password for authentication and also register the client's MAC address for authentication. I am concerned about someone misusing my connection while I am not using it. ...
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1answer
156 views

CDP broadcast questions in a standard AP

Let say I have radio 1 connected to radio 2 in wireless. Then the two radios send a CDP packet to each other. What will happen on a Access Point. Is there any standard for those APs in the markets? ...
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694 views

IPv6 link-local multicast vs. IPv4 broadcast

I know that there is no broadcast in IPv6. However, there is the concept of link-local multicast using the ff02::1 IP address, reaching all hosts in the very same local network. So what is the ...
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1answer
922 views

Address LAN computers by name over Open VPN

Using OpenVPN client on Windows 7 laptop to access my home network. Workgroup on the laptop is "MyWorkgroup". Home network: Wifi router on 192.168.1.1 - Linksys EA6500 with USB hard drive plugged ...
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2answers
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Is this subnetted IP address valid?

I'm learning subnetting at the moment and I'm unsure whether this is considered a valid IP address. 150.16.5.255/21 My teacher asserts that this is invalid because it is a broadcast address of one ...
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133 views

i want to broadcast the audio (livestream) from pc 1 “line in” through pc 2 via network “LAN”

i want to broadcast(livestream) the audio from pc 1 "line in" through pc 2 via network "LAN" because i have no available built in audio interface in pc 2..
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441 views

FIle Transfer broadcasting

I am curious are there implementations where one can send a file over a broadcast address like in IPv4 addresses to multiple end hosts? For instance can scp perform a file Broadcast to multiple hosts ...
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1answer
5k views

What is the exact use of a limited broadcast address?

I read that limited broadcast addresses will be dropped by the router. So, it's not used in the layer-3 (Network layer), where IP addresses are meant to be used. So, where exactly is it used?
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Broadcast address for address 144.16.95.255?

A subnetted Class B network has the following broadcast address : 144.16.95.255. Its subnet mask (a) is necessarily 255.255.224.0 (b) is necessarily 255.255.240.0 (c) is necessarily 255.255.248.0 (...
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How to override wifi broadcast speed limit?

In the 802.11 protocol broadcast happens at minimum speeds (usually 1 Mbps) since there is no ACK system to know if the packet has been delivered successfully. But I want to broadcast a video stream ...
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1answer
138 views

Script/program that listens for user input, reads logs for output and sends broadcast

During code deployments there is a risk of service/system failures. The Network Operations Center monitors alerts from servers. If the alert comes as a result of a code deployment then it might not be ...
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1answer
98 views

Subnetting Difficulty

Taking the following example shown in the first image, why has my teacher has assigned in the solution (image 2) for network one (N1): 7+2 hosts? Shouldn't it be 6+2 since the number of hosts in that ...
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178 views

How to send a netbios broadcast

I am testing some feature of a firewall and I want to send a netbios broadcast packet out. How do I this? I tried nbtstat -A "ip-addr" but this sends a unicast message not a broadcast.
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235 views

Is it possible to get a router’s IP address from a Wi-Fi signal?

Is it possible to get a router’s IP address from a Wi-Fi signal without having to connect in, given that it's broadcasting Wi-Fi, but requires a WPA password?
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Why broadcast ping takes longer than host ping

I have a simple question. I have read that when I'm pinging broadcast address in LAN every device responds to ICMP Echo Request and console shows first(quickest) response. But when I pinged ...
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Is it possible to do keystroke broadcasting across a LAN on a Macintosh?

I have done the keystroke broadcasting in Windows like if I press any key in one PC the same key will be broadcast to another PC on the LAN. I wonder if there is anyway to use the same technique on a ...
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1answer
2k views

Multicast and broadcast networks and routing

I am using my computer for watching TV and also for internet browsing(listening to youtube, soundcloud, etc.). For watching TV I am using m3u playlist, with a IP addresses from multicast network(e.g. ...
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Home router config to allow for UDP broadcast

I have a homegrown piece of software that "listens" to UDP traffic at 255.255.255.255:5010. It works just great on my home network, but does not work on other people's networks. I think that my ...
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How to create a wireless-to-ethernet router?

I have a Debian machine, which I want to turn into a router. It will connect via wireless to a access-point, where it will get an IP. To its ethernet port, other machines will be connected. It will ...
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1k views

Windows IP address cached even after cable unplugged?

I have a PC which connects to a network by both wired cable and wireless. Of course, it has 2 IP Addresses : 192.168.5.111 and 192.168.5.112. (Subnet mask 255.255.255.0) As usual, the PC picks the ...
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10k views

Understanding DHCP discovery specific subnet

I am learning networking and in class we are talking about DHCP. I understand that when a host just joins a network it does not have an ip yet so it sends out a dicovery message. we are using ...
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2answers
602 views

Communicate with a device with an IP set to a broadcast address

I have a wireless IP camera that I am setting up to use for Timelapse purposes. When configuring a static IP selected 192.168.0.255 so as to be memorable, I latter found out (after I couldn't connect ...
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From where do I get a reply if I ping broadcast address 255.255.255.255 from a router

When I do a ping to the broadcast address, I get reply from self-loopback 127.0.0.1. Is this scenario correct or should I get reply from the longest-prefix IP? ping 255.255.255.255 PING 255.255.255....
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1answer
305 views

If a wireless router sends packets all by broadcast and with its full bandwidth, can each connected device receive the same full bandwidth?

If a wireless router sends packets all by broadcast and with its full bandwidth, can each connected device receive the same full bandwidth? The possible scenario is like this: 1) connect one device ...
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3answers
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Unable to ping broadcast address

Host address: 192.168.0.13 Network: 192.168.0.0 255.255.255.0 Router: Cisco DPC3825 DOCSIS 3.0 Gateway (user manual) My home network uses the 192.168.0.0 /24 network for my (mostly wireless) devices. ...
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1answer
2k views

how do I setup my D-link DSR250n to use openvpn server

My aim is to make my Iphone connect remotely (and securely) to my home network and get from the DHCP (the d-link router) IP on the same subnet. This is because I have an client app that broadcasts on ...
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1answer
720 views

Hacked ubuntu pc? Broadcast messages

I have a fresh ubuntu 13 os installed on my system with almost default programs installed. But whenever I shutdown my pc i got these messages. Broadcast from root@.. (Unknown) at ... The system is ...
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1answer
311 views

Send broadcast message on user login

I'd want to add a new feature to my Red Hat 5 so when any user opens a ssh remote session a broadcast message gets delivered to a defined user/all users. How to do it?
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How to use a key binding within shell script ? (Launch terminator in broadcast mode in background)

I currently use a small shell script to start a terminator window as a background process which has multiple splits specified with a layout. terminator --layout=My_layout & I want to execute a ...
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3answers
18k views

Broadcast address in IPV4

I have a small network with the subnet mask 255.255.255.240 and the IP range is 192.168.2.1 - 192.168.2.12. From 192.168.2.1, I want to broadcast a packet. I don't want this packet to go anywhere ...
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Broadcast screen on LAN (wifi) to many clients

I would like to know if the following is possible, and how to go about it if it is: I want to lecture using my laptop in front of 100 students, each with their own laptop. I want my screen, or part ...
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1answer
2k views

How would I broadcast a FTP website over WiFi? [closed]

I am running a FTP site locally on Windows 8 x64. (The FTP site is local. I'm not hosting it or anything). I have configured IIS with a FTP Site at a certain IP address. So how will I make users ...
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98 views

How to find wireless headphones in a given broadcast frequency

I have a wireless microphone system connected to an amp, speakers, recording equipment, etc, in a lecture hall. A couple of the students have difficulty hearing (even sitting close to the speakers) ...
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1answer
2k views

arp add 255.255.255.255 ff:ff:ff:ff:ff:ff (router)

If I add arp entry in router config like this: arp add 255.255.255.255 ff:ff:ff:ff:ff:ff Open specific port: port: 1009 ip: 255.255.255.255 Will it broadcast message to all connected devices? I'...
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how to forward and broadcast UDP packet from one network to another?

I want to forward udp packets broadcasted in one network to another. how can i do this ? I know we can put router in between and router can forward, but router can only unicast not broadcast.