Is there a command line based way to send pings to each computer in a subnet? Like for(int i = 1; i < 254; i++) ping(192.168.1.i); to enforce arp resolution?

I'm writing a local network scanner on Windows to find online hosts with IP Helper Functions, which is equivalent to nmap -PR but without WinPcap. I know SendARP will block and send arp request 3 t...

I want to generate a list of all devices on a local network. I have tried the command arp -a and it has listed some devices, but not all of them. The ifconfig command shows my IP address and MAC ad...

I am acquainting with BSD sockets, and flicking through the man page of sendto, I bumped into MSG_CONFIRM flag, which is quite mysterious to me at the moment. The description says: Tell the lin...

I want to get a mac address from arp table by using ip address. Currently I am using this command arp -a $ipAddress | awk '{print $4}' This command prints what I want. But I am not comfortable w...

I need to capture on an interface with tcpdump and filter out all arp and stp/rstp packets. I tried this command, which does filter out arp, but I still see rstp packets: tcpdump -n -i ens224 not a...

I am trying to configure the ARP age timeout. I think I should set /proc/sys/net/ipv4/neigh/default/base_reachable_time_ms to the desired timeout. But although I set this to 30000ms (30sec) i...

I thought about this for a while and I don't seem to find an answer. Let's say that two routers are connected to each other, their ARP Table is empty as well as their Routing Table. Now, to be clea...

I'm training myself on network scanning and i'm focusing on how to identify a sniffer on my net. Searching on the web, i find that a possible way is the ARP method: i must send an ARP request to a...

I try to figure out which devices are online and which are offline in our LAN. I have seen many programs doing a kind of graphical network overview, presenting LAN IP and MAC addresses. I would li...

I'm trying to make ARP request on python. My code: import socket from struct import pack from uuid import getnode as get_mac def main(): dest_ip = [10, 7, 31, 99] local_mac = [int(("%x" % get_m...

how to get mac address of external IP in C# ? E.g I want to find mac address of "204.13.153.34" ? Any ideas and code snippet is highly appreciated ? Thanks in Advance

Here is a wireshark capture of an ARP request PNG image, I contains the sender MAC inside the ARP packet. The receiving station can derive the MAC from the Ethernet frame. It seems to be redundant....

I am a student trying to learn more about the ARP and sockets in C# To do this I am trying to send ARP requests and replies using a raw Socket in C#. I have manually reconstructed an ARP reply in...

I run 'arp -a' and get the following message back: apples-MacBook-Air-2:~ apple$ arp -a hitronhub.home (192.168.0.1) at ac:20:2e:73:d4:42 on en0 ifscope [ethernet] ? (192.168.0.254) at 0:55:7b:b5:...

I'm dumping outgoing traffic. I only want TCP and UDP packets destined outside my LAN, nothing else. I just used the following filter with tcpdump: ip and (tcp or udp) and (not icmp) and src host ...

I have a Linux virtual server with 2 NICs. eth0 <IP1> eth1 <IP2> arp_filter is turned on and rp_filter is set to be 2(loose mode). Policy-routing is configured as the following: ta...

I want to ping a known MAC address, I tried to use nmap: sudo nmap -sP 192.168.15.1/24 | grep 20:64:32:3F:B1:A9 But in this case its ping all the 255 IP address (from 192.168.15.1 to 192.168.15....

I'm trying to write a batch file that's supposed to find the dynamically assigned IP of my Android phone when it's connected to the network (Tenda WiFi router). So I'm trying arp -a and searching...

When I use arping to send ARP request(I know a sleeping iPhone doesn't reply to ICMP ping) to sleeping iPhones/Androids(means they are on but the screen is dark) connected on the same wifi, the iPh...

I have a script that I'm using to build a config for icinga2. The network is large, multiple /13's large. When I run the script I keep getting the RTTVAR has grown to over 2.3 seconds, decreasing t...

Is there a BPF expression that would only capture arp-reply packets? Currently, I am using Pcap4J and the following BPF expression: arp and dst host host and ether dst mac where host is the IP...

Is there a way to send ARP request within a Java application? I know that ARP is sitting a layer under TCP and UDP therefore by default Java couldn't send ARP request. I am just wondering is there ...

I'm trying to learn the ARP protocol. My idea about ARP is that it is a protocol that help addressing the IP to the exact MAC Address. But when I try to do: arp -a Which I think it will show t...

I am writing a program for creating, sending, receiving and interpreting ARP packets. I have a structure representing the ARP header like this: struct ArpHeader { unsigned short hardwareType; un...