Questions tagged [broadcast]

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

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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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685 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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179 views

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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263 views

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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97 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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76 views

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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182 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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239 views

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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175 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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2k views

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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Linux: does “tcpdump -A udp port 65000” have an equivalent using netcat?

I'm trying to listen to UDP broadcast packets which are being sent to the local network's broadcast address on port 65000. Using tcpdump, I can use tcpdump -A udp port 65000 to see the packets, which ...
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2answers
411 views

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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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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68 views

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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1answer
303 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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1answer
260 views

Multiple cams broadcasting service

I want to set up three cameras at a wedding and stream them to the world. preferably so the viewer can see all three at once, but audio from one. I want to both broadcast live and save it to disk for ...