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).
266
questions
1
vote
0
answers
18
views
Windows ARP retry interval
I have noticed the following behavior with Windows 10. I am sending an ICMP packet every second or so to a valid IPV4 address using the Windows ping utility. I then remove the device from the ...
- 153
0
votes
1
answer
48
views
How am I getting ARP from the internal IP of the router?
I have computer with the IP address: 10.0.0.1 and a another router in the
same network, WAN is: 10.0.0.5 and LAN is 192.168.10.1
When I'm typing route add 192.168.1.0 mask 255.255.255.0 10.0.0.1 and I'...
- 13
0
votes
2
answers
630
views
Direct ethernet connection without knowing the Subnet
I have two linux devices:
A: One has static IP (eg. 10.255.253.5 and mask 255.255.255.0). I cannot know or change this IP.
B: The second has a direct access (Screen and keyboard)
I'd like to connect ...
- 189
0
votes
1
answer
783
views
Is it normal to see "excessive" ARP requests from cable modem?
I'm troubleshooting my home network because we are having frequent outages and slow connections. Very often the ASUS Wifi router shows that it has no WAN IP address. To view what might be going on I ...
- 139
0
votes
0
answers
579
views
Network configuration issue: domain resolving to wrong IP address on M1 MacBook Pro
I have a strange network configuration issue on my M1 MacBook Pro running macOS Ventura 13.2.1.
When I try to ping or access the my development domain example.com (domain is an example, dns settings ...
- 1
1
vote
1
answer
308
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
1
answer
637
views
How to get ARP table of a switch through command line interface?
I could see connected device information on user interface of network switch. Is it possible to query the switch for its ARP table using command line or PowerShell?
Following details were added after ...
- 11
0
votes
0
answers
129
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
- 3
1
vote
3
answers
530
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
0
votes
2
answers
142
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 ...
stochasticlover1
1
vote
2
answers
62
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
0
answers
148
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 ...
- 331
0
votes
0
answers
65
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 ...
0
votes
1
answer
316
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:...
- 357
1
vote
1
answer
104
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 ...
- 33
0
votes
1
answer
97
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
1
answer
608
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 ...
- 103
0
votes
0
answers
150
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 ...
- 1
0
votes
0
answers
30
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
466
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 ...
- 101
0
votes
0
answers
20
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 ...
- 101
0
votes
2
answers
575
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 ...
- 153
0
votes
0
answers
740
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
4
votes
1
answer
5k
views
Manually sending ARP packets using bash
How could I send ARP packet to specified IP on a LAN using bash or some Linux utility?
- 43
0
votes
1
answer
148
views
Make a remote host have a local IP address with ARP capability(Steam Link)
Currently I have two subnets in the 10.0.0.0/16, which are 10.40.20.0/24, let's say that's A and 10.32.80.0/24, B.
My PC is in the subnet A and what I'm going to do is use Steam Link, Oculus Air Link ...
- 1
2
votes
1
answer
421
views
Retransmission in less than one second
On my Linux machine I use nc to communicate with a echo server running on my android device. I use nc to send text to port 65303 of the android device. After entering test1 the same text is sent back ...
- 123
0
votes
0
answers
401
views
ARP broadcast, is my understanding correct?
Having studied more of the networking side of the Internet from the perspective of a front-end web developer, the concept of ARP is still causing me confusion - but I have made some progress with ...
user1236265
0
votes
1
answer
697
views
is there table like Ipv4 ARP for IPv6 in linux? where can i (path) find it?
where can i find NDP table in linux?
I'm trying to list the neigbours for the ipv6 address for my appliaction.
ip neigh is the command which we use to show the neigh ip address (both ipv4 and ipv6)...
1
vote
2
answers
7k
views
ARP cache clear on mac
I am trying to clear ARP cache on my mac.
arp -a : displays all the addresses
ip -s -s neigh flush all gives me Option "-s" is unknown, try "ip -help" on macOS catalina v 10.15.7
...
- 111
0
votes
1
answer
1k
views
How is ARP reply generated from Windows 10? Sending ARP req from embedded device through ethernet port to windows10 on laptop
I want to send an ARP request using my embedded device through the ethernet cable to my laptop that has windows 10 on it.
I want to receive an ARP reply from windows back to my embedded device through ...
- 5
0
votes
1
answer
8k
views
Couldn't arp for host, Kali Linux
I am currently learning the basics of cybersecurity and I am trying to follow the following tutorial on ARP spoofing. I am using kali linux on a VirtualBox VM on my Windows pc to redirect my windows ...
- 3
1
vote
1
answer
1k
views
How to get all IP addresses from connected devices with specific device name?
I'm making Bash script for automation and would like to get all IP addresses from connected devices with specific device name?
For example I have 10 devices connected to Wi-Fi. All with same device ...
- 43
1
vote
0
answers
458
views
Why there are some entries in the Mikrotik RouterOS ip-scan table who don't have MAC addresses or RTTs?
There is a command /tool ip-scan in the RouterOS, which basically does network scanning. It works quite efficiently, however, there is something I can't understand in its behaviour.
For some network ...
- 2,644
0
votes
1
answer
728
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 ...
- 11
0
votes
1
answer
680
views
Extra entry in ARP table?
I am new to networking so please have mercy on my noob soul...
I hope this question is acceptable for this forum. It just got kicked out of the networkengineering.stackexchange.com forum, so I'm ...
- 1
0
votes
0
answers
90
views
Unusual amount of ARP who is on WLAN form unknown IP
I am seeing a unusual amount of ARP traffic on my Wireless network. My wireless network is on the subnet 192.168.1.0/24 but the ARPs are coming from 10.215.0.1 which is not in my subnet. It is also ...
- 139
1
vote
1
answer
682
views
Multiple ARP requests from an IP address outside my LAN using an unknown MAC address
I have a vexing recent issue on what has been, for the most part, a very reliable home network. Since it is a hobby for me, it’s probably a little more complicated than the average home, but it’s ...
- 31
1
vote
0
answers
130
views
ONT doesn't answer ARP request
I've been working with a custom linux image, based on yocto, running on an industrial tablet. During my tests, I've faced some problems to connect to a wifi network after rebooting the device.
Before ...
- 11
0
votes
1
answer
107
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
0
votes
0
answers
313
views
Why keeps my Virtual Machine sending ARP messages in internal network?
Following setup:
Windows 10 host system runs 2 Ubuntu 20.04 Virtual Machines from VirtualBox. Both the VMs have their network adapter set to "internal" mode, which means only an internal ...
- 1
1
vote
2
answers
4k
views
'Destination Host Unreachable' when pinging a printer from some hosts on local network
Problem
I have a Brother MFC-2700DW on my LAN I'm trying to access from a variety of devices. I've assigned a static hostname (ohbrother) and IP (192.168.2.135) for it in my OpenWRT router.
What's ...
- 111
6
votes
2
answers
5k
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
0
votes
1
answer
495
views
Doubts on Mac address of Guest OS configured in bridged mode
I'm running Kali ( guest OS ) in workstation pro. My host OS is windows 10. Guest OS is configured in Bridged networking mode.
Consider the following parameters of :-
Guest OS - IP_G:MAC_G
Host OS - ...
0
votes
0
answers
323
views
Arp poisoning with Ettercap makes the target unable to connect to sites
So I was messing around with Ettercap on my kali Linux and doing arp spoofing with my target machine being a mac laptop. After successfully poisoning the machine (checked with chk_poison) the machine ...
- 1
1
vote
2
answers
802
views
Is it safe to use ARP Poisoning + DNS Spoofing for a PiHole instead of setting it as a DNS Server?
Let's say I have a techno-illiterate friend I would like to set up with a PiHole (DNS Blackhole). Would it be possible (and relatively secure) to configure a Raspberry Pi to be a plug and play device ...
- 13
1
vote
1
answer
455
views
Retrieving MAC address via tunnel
Currently I'm working on adding my own software to provide internet support to an old MS-DOS game. Because my primary environment is Linux, I use DOSBOX from within Linux and feed my internet ...
Mike St
0
votes
1
answer
159
views
why is "arp -a" showing inconsistent outputs that are vastly different?
I have newly set up a computer with Ubuntu 18.04 and connected to my home wifi. When I try arp -a command to scan other devices connected to the same network, I see some very weird outputs.
First, the ...
- 101
1
vote
0
answers
119
views
Send multiple ARP requests with different source MAC
Can I send a flood of ARP requests with multiple random source MAC addresses using Ubuntu 20.04 to a single destination IP address?
1
vote
1
answer
305
views
ARP IP addresses. Am I in trouble somehow?
I recently got a message from Norton Antivirus: New network detected and saved which confused me. I found out that I can check that with arp -a so I did. I noticed about 100 different IP addresses. Is ...
- 13
0
votes
1
answer
654
views
Windows 10 sends ARP request only on 2nd attempt to reach the IP
When I try to open a TCP connection from my Windows 10 laptop to an IP on my LAN that is not present in the ARP cache (eg. when the laptop comes back from sleep), the connection fails on the first ...
- 335