Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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).

0
votes
0answers
15 views

network issue when pinging hosts of the same lan

I have two hosts on the same network: Kali which is on VirtualBox as guest; eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 ether 08:00:27:48:45:25 txqueuelen 1000 (Ethernet) ...
0
votes
1answer
21 views

FreeDOS does not answer ARP

I have 2 VirtualBox virtual machines with freeDOS (1.2) as guests, and I am trying to have network connection between them. For a start I am trying to have connectivity between one of the machines ...
0
votes
1answer
62 views

ARP incomplete on the router connected to the gateway

Here in my office we have a network consisting of the gateway (router) from the ISP, and less than 15 clients (computers). I noticed the network slowed down a lot, even when there was only 1 client ...
0
votes
0answers
21 views

Make an ARp table using fake IP and Fake MAC

Using arping command I can fake an IP in the ARP table of the client sudo arping -c 1 -U -s 192.168.1.5 -I eth1 192.168.1.10 So using this I can fake an IP of 192.168.1.5 having the MAC address of ...
4
votes
1answer
60 views

Why does the 2nd ARP request wait until the pings are over to show up?

This problem was presented to me by one of my professors because it only happened after switching from 100Mb cards to Gigabit NICs. The second arp request that comes from the computer being pinged (to ...
0
votes
0answers
169 views

How to install OpenWRT opkg packages without an internet connection?

I have a TP-Link router. TL-WDR4300. I have setup OpenWrt environment in it. Version details is as follows: Linux version 4.4.14 (alex@AlexPC) (gcc version 5.3.0 (OpenWrt GCC 5.3.0 50108) ) This ...
0
votes
0answers
64 views

ARP Offload on Linux

My router does not support static ARP entries. Nonetheless, I need to wake up my Linux box from the Internet. One can do this by enabling ARP offload. On windows, you have an explicit Network adapter ...
0
votes
0answers
36 views

Wireless networked device not receiving packets

I'm using create_ap (based on hostapd) to use an old desktop Linux computer as a wireless router. This works fine for my Android smartphone, but not for my two Linux laptops. The connection will stop ...
0
votes
1answer
148 views

What is the default cache refresh rate of Windows 8 and Ubuntu?

0 down vote favorite Since sending an ARP request/reply for each IP data-gram is inefficient, hosts maintain a cache (ARP Cache)of current entries. The entries expire after What is the default ARP ...
0
votes
1answer
43 views

Is it normal to have a device on the home network broadcasting ARP all the IPs on the network?

I'm using Shark to scan my home network, and i noticed that a tablet is broadcasting, ARP protocol to all available IP on my network. Would this be a malicious attack from an app that i installed?
0
votes
1answer
2k views

Getting IP address of all device in local network , windows 7

There are multiple posts of this in many forums including this one, some of them involve using a third party app, and some involves using arp-scan or arpping tool in linux. I am trying to get an idea ...
0
votes
1answer
41 views

Is there a possibility to change protocol type in ARP packet?

I'm sniffing ARP packets in Wireshark and wondering what exactly means filed protocol type. The field is always 0x0800 for IPv4. Is it the same for IPv6? Is there a possibility to change the value ...
1
vote
0answers
135 views

WiFi Range Extenders, and Failing ARP requests

I'm working on a network, as outlined below - a BT HomeHub 5, and a Netgear EX6150 WiFi extender. There are other points on the network though I've left them out for brevity, and all of the pink ...
1
vote
2answers
157 views

How to debug an unstable connection in a P2P configuration

have a setup where I have two computers connected to each other (C1 and C2). Both have a static IP and they know each others IP. C2 sends UDP packets to C1 and C1 receives and logs them. Seems simple ...
0
votes
0answers
406 views

APC UPS SUA 2200 + AP9617, cannot set arp, getting access denied

I have APC UPS SUA 2200 + AP9617 NMC, and i followed this guide : https://joeit.wordpress.com/2012/07/17/assigning-an-ip-address-to-an-apc-network-management-card-without-having-the-apc-software/ ...
0
votes
1answer
160 views

Force local network traffic through the switch

I have a machine with three network cards. One card is connected to a WAN and the other two cards are connected to the same switch with the same subnet (192.168.1.0/24). What I want to do is send data ...
2
votes
1answer
650 views

Why ARP Response only when network adapter in promiscuous mode?

In my home network (10.0.0.0/24) i want to deploy a network printer, without laying a cable from the switch to it. So i used a Raspberry Pi, that connects via Wifi to my wireless network and wired it'...
0
votes
0answers
349 views

In WLAN network, does ARP always show the mac address of device's Wi-Fi interface?

Say, if some device is accessing the server in the local network, while being connected to it via WiFi, would an ARP command sent from that server always show the same mac-address, as the device ...
0
votes
0answers
79 views

After some time has passed, no ARP requests from any device get an answer over Wi-Fi

I've been having this problem for years but only today I finally found a track to pursue the solution. Basically, in my house, whenever a device is connected to any of my WiFi networks, after some ...
0
votes
1answer
325 views

How to sniff all ARP traffic on a WiFi network?

I would like to know if it's possible to sniff all ARP traffic (even if I am not the intender destination) on a WiFi network. I've tried on Wireshark and Scapy neither works. Thank you.
0
votes
2answers
756 views

How to find ipv6 addresses of connected devices to my Linux PC?

I can see all connected devices to my Linux PC with: cat /proc/net/arp But this show only the IPv4 addresses and MAC of the connected devices. There is no IPv6 addresses. How to find the IPv6 ...
0
votes
1answer
52 views

Getting many ARP packets from modem (5000/sec). Why?

We've been randomly having internet outages at home I've been trying to diagnose. About once a week (randomly), it becomes very unreliable for half a day. About 9/10 of packets get dropped when I ping ...
0
votes
1answer
92 views

ARP scan doesn't return waited result

I'm wondering why when I execute arp-scan, netdiscover, nmap or different ARP discover tools I don't get any result regarding my other NIC connected to the same computer. wlan1: 192.168.0.10 wlan2: ...
0
votes
0answers
76 views

MAC address of all unresponsive IPs in my network are the same as the gateway mac address

I have problems assigning a new address to one of my servers, every time I want to add a new address it says that the address is already in use. So what I'm doing now is to use the arp tool to see ...
1
vote
0answers
53 views

Source IP is modified on UDP packets

I have a linux server S, with two netcards, one ('netA') on 192.168.1.x and the other (netB) on 192.168.2.x. netB is connected by point-to-point wifi to the rest of netB. To get netB card to find ...
0
votes
1answer
437 views

How to perform a mitm-attack in another subnet (ARP Spoofing & pivoting)

So, I have been trying around with ARP-Spoofing a little and I would like to try to perform a mitm-attack combined with pivoting from one Subnet towards another. My idea: I have two subnets. I know ...
5
votes
1answer
7k views

Where is the ARP cache on Linux?

Where, in memory, does the ARP cache exist? I tried searching it up online but didn't find anything.
0
votes
0answers
1k views

What is the default ARP cache timeout for Windows 10?

All I can find for the default time an ARP entry remains in the cache before being removed for any Windows is all the way back from Windows 2000 or XP. It seems like 10 minutes is common for Windows, ...
0
votes
1answer
183 views

“Invalid neighbor parameter” error. Trying to create static arp using netsh

I am trying to make a static arp entry for my gateway 192.168.2.1. I am using Windows 7 Ultimate 64 bit and at first I tried: arp -s 192.168.2.1 00-11-22-33-44-55 But I was getting a permission ...
0
votes
0answers
33 views

Specific arp.exe command option: Is there any option to see the gratuitous-arp?

I've read about the existance of that option but i've found nothing on the options given on the answers about arp command given here on SuperUser or ServerFault, and neither on Google, Google Academic ...
0
votes
1answer
66 views

Find out which access point devices are connected to

I work in a school and we have a multitude of access points dotted around the site. We have an open WiFi connection throughout that is locked down using a mac address filter. We are currently having ...
1
vote
0answers
213 views

ARP requests sent on different subnets

I am quite confused with an experiment I made at home. I have two computers, say A and B: A and B are connected (ethernet) to the same private network (with a gateway to the internet) 192.168.1.99/24 ...
0
votes
2answers
1k views

Why do we use MAC addresses for local communication (ARP) instead of IP addresses?

I cant understand it: If each and every device in a local network has a unique local IP address, why do we still use the MAC address (ARP) to exchange data between devices on the same local network? ...
1
vote
1answer
344 views

How to add a static arp table entry to AT&T NVG589 Gateway?

So as a bit of background, I'm attempting to set up a Wake on Wan service for a specific device. The service isn't any issue, it works in its current form. The issue arises from the arp table/cache ...
0
votes
2answers
1k views

Raspberry Pi does not show up in ARP table until connected to

I'd like to be able to connect a Raspberry Pi to a company network via Ethernet and discover its IP address using ARP. I would like to be able to do this on both Windows and *nix machines. However, ...
0
votes
1answer
513 views

Windows 10 - 'arp -d' as limited User

I have some Windows 10 PCs joined to a Samba4 domain, so most users only have a limited Account. I added the useres to the local Group 'Network Configuration Operators' so that they are allowed to ...
1
vote
2answers
77 views

OSX - Find if phone is connected to the WIFI Network

I'm trying to programmatically find whether my phone is connected to the current Network, given that I know my device's mac Address. Something like this SOMETIMES works: arp -a | grep "11:11:11:11:...
0
votes
1answer
36 views

To display current arp in second level of network

My Windows PC is connected to a router (192.168.1.1) and that router is connected to another router (192.168.2.1) like a child to it. The nodes I wish to see in the ARP listing are connected directly ...
6
votes
1answer
10k views

ARP Cache location on windows 10

I'm just a beginner in studying the command prompt in windows 10. Out of curiosity I wanted to ask: Where does the command prompt reads or writes the ARP Cache data from in windows 10? Meaning, the ...
1
vote
0answers
133 views

Two hosts can't ping themselves

I am working for a project on an embedded linux environment. I have a network made up of a gateway (192.168.1.1), two STB (Set-Top-Box: digital decoder) and a PC. The two host have IP respectively (...
1
vote
0answers
39 views

Routing is still using the main table after I configured it to use a custom routing table

I have the following situation: - - - - - - - | namespace |-------o o------ - - - - - - - vethY ppp0 vethX where: ppp0 is a PPP interface and its ip address is 192.168.100.169/...
0
votes
1answer
560 views

Almosy locked out of PfSense after setting static ARP table

So I almost locked out myself from pfsense after setting static ARP table in the dhcp severs's conf. Now, I can't access pfsense from the network (nor ssh, nor webgui) because every request times out....
-1
votes
2answers
215 views

How does ARP protocol really work

I know that if a destination host is in the other network the returned MAC address is the MAC of the router instead of the designed host. I wonder now how does it function. If my assumption is right ...
0
votes
0answers
401 views

Spoof network gateway

If I said I wanted to spoof gateway to make device 2 on LAN look like gateway when router/modem by att is really gateway, technically be man in the middle? So all devices traffic on LAN would go to ...
3
votes
1answer
79 views

Unable to send ping from host A via B to C

There is a network of three computer. Problem: Host A (192.168.1.1) can send ping to host B (10.10.0.5, also 192.168.1.2), but can not to send C (10.10.0.6, 10.10.0.7). Host A say: "10.10.0.6 = ...
3
votes
1answer
314 views

Must an ARP request gets re-send when the connection is broken or only after the cache timeout?

I have the situation that an IP address moves from one device to another and no Gratuitous ARP (Address Resolution Protocol) message gets send out to update the members on this network. There is a ...
3
votes
2answers
2k views

How does ARP handle a move of an IP address to another device?

I understand that the Address Resolution Protocol (ARP) has a cache table, which stores the MAC addresses to the according IP addresses until the entry gets removed if it gets not used anymore for ...
0
votes
1answer
593 views

Use raspberry pi to spoof dns

I wish to use a raspberry pi as a sort of man in the middle, between my laptop and the internet. I was hoping to connect to the pi by ethernet, and then use a second ether net adapter (usb) to connect ...
1
vote
1answer
75 views

Where to read the time a client connected to a hosted network or hotspot?

I have created a hotspot via netsh commands in Windows 8.1. Here are the list of commands I've used but there no details about the time in a client connected to the hosted network. > netsh wlan ...
1
vote
3answers
4k views

Bizarre caching of “dead” DNS entries; where is this cache stored?

This has really got me stumped. Advanced IP Scanner has the ability to show "dead" entries—devices that were at some point visible on the network, but which are no longer reachable. Specifically, I ...