All Questions
47
questions
1
vote
0
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51
views
Why am I seeing ARP requests for addresses outside of subnet
In my home network I have a router running Linux, with several VLANs coming into the same physical interface.
This is what things look like on the router:
➜ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> ...
- 233
1
vote
1
answer
601
views
Does a router's ARP table contain the MAC address for all destination IPs?
Let's say we have the following configuration.
WAN - Router -------------------- Switch --------- Client
| |
Multiple switches connected to router |
...
- 139
1
vote
3
answers
2k
views
How does a router identify a device with a static ip?
When a static ip is configured on a device, how does a device identifies itself to the router or how does a router identify the device? What process/protocol involved here?
I belive it has something ...
- 13
1
vote
2
answers
88
views
ARP request not broadcast to local network with TL-WR481N
I want to run a server on my local network. It is a machine running NixOS and using the static IP 192.168.0.16. All other devices use DHCP.
The server is called M, my laptop is called S (192.168.0.150)...
- 53
0
votes
1
answer
134
views
What is the source ip dest ip source mac and dest mac in Gratuitous ARP response
So I am sitting at host A. And I need to send Gratuitous ARP response to Host B. in Gratuitous ARP response I dont know the mac address of Host B my computer on LAN. But can I add 0xFFFFFFFFFFFF to my ...
- 133
0
votes
0
answers
33
views
Any objections to using /32 instead of common /24 netmask on a client?
For whatever reason ARP doesn't work properly on my network(separate problem, AP isolation turned off on router, really no idea). Then I discovered setting /32 netmask on client devices can let me ...
- 11
0
votes
0
answers
983
views
How can i find device type and name in linux terminal without install nmap and other similar tools from it ip address?
I'm looking for find a way to get device name and type like ESET Connected Home Monitor .
Eset :
Connected Home Monitor can help identify vulnerabilities in your home network such as open ports or a ...
- 33
0
votes
1
answer
948
views
Severe ARP flooding from PC requesting link-local address
TLDR; PC is sending ARP Who is requests for a link local address 169.254.xxx.xxx continuously every second. Only on this device.
My PC begins to send constant ARP requests to the router for "Who ...
- 19
0
votes
1
answer
207
views
How Does a Computer Initially Connect to a Router / Network
If I have a computer with a network card, it will have a MAC address and a localhost IP of 127.0.0.1. So how does a computer with a network card discover routers and connect to them initially? I ...
- 111
6
votes
2
answers
7k
views
How to Wake on WAN without broadcast address?
--- Recap of the possible solutions at the bottom ---
First of all I apologize if I write something that makes no sense. My knowledge of networks didn't go beyond what an IP address is until 3 days ...
- 163
1
vote
0
answers
2k
views
Connection issues when router in bridge mode is between modem-router and user device
I decided to extend my home network's wireless coverage by utilizing a spare router. Both routers are modem-routers and have been provided by different internet providers the previous years. So, their ...
- 11
0
votes
2
answers
8k
views
How to scan a network for MAC addresses?
From my router (running OpenBSD) I can do:
arp-scan --interface=em1 --localnet
And get a list of all IP addresses and corresponding MAC addresses on my network.
But is it possible to scan for a ...
- 289
-1
votes
2
answers
281
views
Laptop keeps disconnecting from WiFi (Netgear WNR614 N300)
So my laptop(Ubuntu 20.04) keeps DC'ing from my WiFi. But my phone is properly connected to it and so is my amazon fire stick.
I ran wireshark to check the problem and there seemed to be an ARP issue.
...
- 9
1
vote
1
answer
718
views
how does arp scanning cross the network layer?
I have the following setup in my network:
cc:cc:cc:cc:cc:cc -------- 192.168.1.5/24 phone bb:bb:bb:bb:bb:bb
(other networks and ...
- 155
1
vote
0
answers
123
views
Iputils arping works good with ethernet devices but not with wifi devices
I am developing an application for an embedded device to check whether a particular network device present in the local network (192.168.1.1 - 192.168.1.254) is alive.
Initially I was using ping to ...
- 11