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Questions tagged [arp]

ARP (Address Resolution Protocol) is a protocol used to find an address from the link layer (Ethernet, for example) from the network layer address (such as an IP address).

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0 answers
160 views

Can I get the IP address of device using MAC address? or logs of IP used by MAC address?

I been using debian linux version Stretch it seems arp command is helpful but it only collect those online devices
TheBarge's user avatar
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 ...
Anton's user avatar
  • 13
0 votes
2 answers
613 views

Ping is only succeeding one way

I have two devices (a PC and a laptop) on a small network connected by Ethernet. I have assigned static IP to the NIC of each device. The laptop's NIC has IP 192.168.1.101 and logical interface ...
user avatar
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)...
Gecku's user avatar
  • 53
0 votes
0 answers
210 views

Is Windows susceptible to the ARP flux issue?

I have a test setup where a device is connected through an (integrated) Ethernet switch to a multiple Network interfaces PC running Linux. The goal of this setup is to test all the interfaces with ...
ricardomenzer's user avatar
0 votes
0 answers
127 views

Windows PC sends ARP requests to outside subnet

I have a strange behaviour. I am seeing arp requests to another subnet. We have a central DHCP at ....0.2.21. The Client has an adress assigned from it ....1.1.20, with a 24 bit netmask. The Client ...
Marco Kleiß's user avatar
0 votes
1 answer
443 views

ARP cache: what does a `mask` value of `*` represent?

/proc/net/arp contains something like the following on my Linux box: IP address HW type Flags HW address Mask Device 10.1.0.70 0x1 0x2 a4:4d:aa:6b:...
Tom's user avatar
  • 357
1 vote
1 answer
133 views

Is it possible to send packet under other node's IP?

I have 3 machines on my network 192.168.2.1 => pfSense Router ( 00:0c:29:d4:1f:88 ) 192.168.2.2 => My Kali Machine ( 00:0c:29:20:f8:0a ) 192.168.2.11 => Linux ( 00:0c:29:1a:b0:f0 ) What I ...
LoneWolf47's user avatar
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 ...
user786's user avatar
  • 133
0 votes
1 answer
811 views

Why do I get "Destination Host Unreachable" on the same subnet, pinging a secondary IP address?

I have two AWS EC2 instances (RedHat 8), sa216p and sa216t, connected to the same subnet 172.31.80.0/20. Primary IP addresses are assigned to them by the EC2 DHCP, 172.31.84.105 and 172.31.92.210 ...
mustaccio's user avatar
  • 103
0 votes
0 answers
245 views

Every second an unknown MAC address sends an ARP probe

I just inherited a network and found something I can't say I've seen before. About every second (sometimes longer, sometimes shorter) a MAC address that I can't find anything about sends an ARP probe ...
Android's user avatar
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 ...
imoc's user avatar
  • 11
0 votes
0 answers
869 views

TTL of a dynamic arp entry in windows (not base time, actual time)

When I run arp -a on my cmd I get a list of arp entries. The dynamic entries expire when their timer expires and then they are deleted from the arp cache. How can I see how much time a certain entry ...
GalSuchetzky's user avatar
0 votes
0 answers
21 views

TTL of a dynamic arp entry in windows [duplicate]

When I run arp -a on my cmd I get a list of arp entries. The dynamic entries expire when their timer expires and then they are deleted from the arp cache. How can I see how much time a certain entry ...
GalSuchetzky's user avatar
0 votes
2 answers
897 views

arp -a not reporting all devices on network on MacOS

I come across this issue consistently, and have for quite some time with different computers and OS versions. I first run a broadcast ping over the IP range, eg, 192.168.0.255. However arp -a still ...
KevinHJ's user avatar
  • 187

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