Questions tagged [arp-spoofing]

ARP spoofing is an attack technique which sends spoofed Address Resolution Protocol (ARP) messages to Local Area Network (LAN). The idea is to identify attacker's MAC address as the address of another network host and redirect traffic intended for another IP address to the attacker's IP address instead.

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10
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3answers
11k views

Doesn't an IP conflict occur when ARP spoofing?

I am playing around with Ettercap and ARP spoofing attacks. I have noticed that the computers that are involved in my attack not are displaying any messages telling that an IP conflict has occured. ...
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4answers
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arp spoofing protection on LAN

I am a network administrator in company. I read this article eject any wifi device from network with android Some of employers are using mobile phones and company`s wireless network. Theses employers ...
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2answers
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Prevent ARP spoofing with dynamic static entry on Linux

ARP spoofing detection/prevention seems to be quite popular here. With other techniques like port stealing aside, I'm wondering if the following could work to prevent it: Whenever my Linux ...
8
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2answers
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dnsspoof not spoofing (requests and forwards real DNS packet)

I was trying to use dnsspoof but it did not work as expected. These are the steps I followed: Set IP forward in kernel to 1 arpspoof -i eth0 -t 192.168.1.39 -r 192.168.1.1 and arpspoof -i eth0 -t 192....
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2answers
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Does ARP spoofing work on *all* LANs?

I understand how ARP spoofing works on a switched network: attacker tells the router he's the victim, then tells the victim he's the router. My question is: on large networks, like corporate and ...
7
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1answer
1k views

How does WifiKill work?

How is possible for Wifi Kill to block someone from using Wi-Fi, even if you don't have access to the router settings and you even don't use MITM (I think)?
7
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1answer
258 views

Are there any situations when one can only mount a passive MITM?

This came up while discussing Web & insecure HTTP - Using RSA for encrypting passwords on the client side Is there any such situation possible when requesting an HTTP page where an attacker is ...
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2answers
2k views

Packet Checksums

I recently learned that every packet includes checksum bytes and that the computer will request the packet again if the checksums don't match. How do the following attacks defeat such a safeguard? ...
6
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2answers
9k views

How to hack a switch connected network with static ARP?

For example, if there is a network with three computers connected to the same switch, Alice, Bob, and Eve. If Alice and Bob add each other on their own ARP list as a static ARP entry, and Eve wants to ...
6
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2answers
547 views

Is ARP poisoning necessary?

Correct me if I'm wrong but isn't it possible to sniff WiFi traffic in the air? If so, what exactly is the point of ARP poisoning? In this scenario, the attacker would already be authenticated on the ...
6
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2answers
5k views

Is it possible that my home router is preventing my ARP poisoning attack?

As part of a school project I am trying to do a MITM attack on my local network using ARP poisoning. I choose a target and then I send a spoofed ARP packet to it and to the router every 100 ...
6
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4answers
3k views

ARP spoofing kills victims connection and other issues

Recently I became interested in sniffing/spoofing. I'm running Kali Linux with MITMf(9.8) and SSLstrip. To start the attack I use: python mitmf.py -i wlan0 --target X.X.X.2 --gateway X.X.X.1 --arp --...
5
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1answer
507 views

How to figure out that someone is ARP spoofing me and what to do against it?

This is a shared network with a router and 16 users sharing the internet connection. Why I think someone is arp spoofing: Suddenly, since this week, I get disconnects regularly. I cannot access the ...
5
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4answers
5k views

Unicast ARP Requests: Considered Harmful?

I'm playing around with Snort's downloadable rules and I found one which is easy to activate: sending a unicast ARP request. Okay, so I start injecting ARP requests, making sure the destination is not ...
5
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1answer
431 views

MITM attack foiled by network?

I would like to clarify that this is not aimed at being a malicious attack and is being assisted by my school's IT department and my computer science teacher. It is fully sanctioned. The primary goal ...
5
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1answer
784 views

How to prevent ARP poisoning with hostapd and iptables?

I have a raspberry pi and hostapd and iptables are running on my pi. However iptables cannot block the wifi clients from communicating with each other, thus I cannot prevent them from sending out ARP ...
5
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1answer
655 views

ARP poison on divided network (every PC in it's own subnet)

Let's say that we have a room with a router and 30 PC's plugged in. Every PC has it's own 'subnet'. If we check for available hosts via ettercap/wireshark (on any PC), it only discoveres two hosts: ...
5
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2answers
2k views

Bypassing Trustwave NAC

I'm currently doing a penetration test for a client, who are using Trustwave NAC to prevent unauthorized physical access to their network. I would like to know if there are any possible ways to ...
5
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3answers
3k views

Detect arp-cache poisioner / spoofer

The situation is: a hall full of 200-300 people, one of them is performing an arp-cache poisioning attack. Or messing with my network over wifi in any way. Is there a way how to determine the ...
5
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2answers
2k views

Can I set a fixed gateway IP and MAC address to prevent ARP spoofing?

I was wondering, can I force Windows to use a static gateway defined by the IP and MAC address (Both), to prevent ARP spoofing (e.g. NetCut)? So even if I have been spoofed Windows will ignore the ...
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3answers
3k views

What does a switch do against a packet sniffing attack?

I have heard that using switches in my network helps prevent against a packet sniffing attack but how does it help prevent the attack?
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1answer
7k views

ARP poisoning and port forward together

Suppose these assumptions: Router IP address: 192.168.1.1 Router MAC address: 00:00:00:00:00:00 My IP address: 192.168.1.2 My MAC address: 00:00:00:00:00:01 Victim IP address: 192.168.1.3 ...
4
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2answers
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ARP poisoning between a wired and wireless network

How can a ARP-Poisoning attack work in a mixed (wireless and wired) network? Assuming that the attacker is connected to the network via wireless connection and the target is a computer connected to ...
4
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1answer
2k views

ARP spoofing with Scapy. How does Scapy reroute traffic?

Background: I understand that in order to ARP spoof a victim in a network using Scapy, we need to send ARP reply packets to the victim and the gateway router with the correct destination and Source ...
4
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2answers
2k views

What is the disadvantage of using spoofing protected version of ARP protocol

I read this article about man-in-the-middle arp poisoning and how it works , it seems that arp poisoning programs exploits the fact that ARP protocols trusts any packet to be true and modify its ...
4
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2answers
5k views

Is HTTPS able to prevent ARP poison attack in LAN?

I simulate an ARP poison attack in my LAN network. In the network I have 4 devices: victim, attacker, router and a web server. The victim try to log in the website on the web server and the attacker ...
4
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1answer
1k views

Intercept DNS query packet and send spoofed response after ARP poisoning

On my network, I am able to perform ARP poisoning but only for a target machine not router. Therefore, I cannot spoof responses by intercepting router's packets and modifying them (http://...
4
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1answer
1k views

Man in the Middle Attack against NTP

So, lately I've been really into penetration testing and learning the nitty-gritty of tech. I'm dong courses on computer architecture, cryptography, surveillance law, and computer networks. I never ...
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5answers
17k views

What is the best way to run MitM attack on my wireless network?

For research purpose, I want to launch a MitM attack on computers that are connected to my wireless network. I wonder what is the best way to do so. Notice that I control the router, and do not want ...
4
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1answer
578 views

Stop DNSSpoof after login

Preface: I had an argument with a buddy the other day, he said it was impossible I disagreed. So say I have a large network of computers all visiting the same website for some reason. Then I have a ...
4
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1answer
486 views

SSL Strip on Fedora24

I want to perform a MITM attack on my own network, and followed several tutorials on how to use sslstrip, iptables and arpspoof. But every time I perform the attack, I lose the connection on the ...
4
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1answer
977 views

How does detecting promiscuous mode using an ARP test work?

I have read that we can detect whether a system is running promiscuous mode by sending out an ARP request with a fake broadcast address e.g FF:FF:FF:FF:FF:FE.This will be blocked by all NIC's ...
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0answers
722 views

ARP Spoofing Attack? Highly Suspicious Network Activity Detected in Wireshark [closed]

Wireshark detect highly suspicious network activity on my system. As you can see in the attached screen capture, broadcast traffic repeatedly sends weird packet information and suspicious requests, ...
3
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2answers
3k views

What is the role of ARP poisoning when doing a DHCP spoofing attack

My Current Background on the topic DHCP Spoofing is done by a rogue DHCP server on the network which replies to DHCP requests from hosts(Attacker can run a DHCP starvation attack on the legitimate ...
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3answers
25k views

how to prevent arp poisoning on my network?

Some users on my network using wifikill or netcut to prevent other users from accessing the internet [ ISP's router: public IP ] - [ gateway: public IP eth1 - network eth0 (NAT) ] - [ switch and ...
3
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2answers
1k views

How wireshark capture packets in LAN without arpspoof?

I created a lab environment which has Windows 7 and Kali Linux in VMware. In Kali Linux, I opened Wireshark and started to listen to traffic on eth0. After that, in my Windows 7 machine, I opened an ...
3
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4answers
706 views

I started to learn about MITM attacks, and I can't figure out few things

I just started to learn about MITM attacks, and I can't figure out few things. I have few questions and appreciate all the answers. If the attacker is already in my LAN why does he need to trp to arp ...
3
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2answers
471 views

Defence against promiscuous detection techniques

As an attacker,how do I prevent people from finding out that my NIC is in promiscuous mode? For test like ARP and DNS how do I defeat the users detection mechanism?
3
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1answer
10k views

Different between arpspoof command spoof only target and both target and gateway

Is there any different on case 1 arpspoof -i <interface> -t <target> <default gateway> case 2 arpspoof -i <interface> -t <target> <default gateway> arpspoof -i &...
3
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1answer
325 views

How ARP spoofing works when the attacker has a different IP address than target?

I am unable to understand fully how ARP spoofing attacks are successful. Assuming three PCs are connected to a single switch PC-1 - IP address 192.168.1.1, MAC: AA:AA:AA:AA:AA:AA PC-2 - IP address ...
3
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1answer
1k views

Is it possible to do arp spoofing on remote system?

I am new to Linux/ Kali but I am trying to learn as much as I can. From past 5 days I have been googling and learning it all by myself. but I got stuck on this. I saw every video on ARP spoofing ...
3
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1answer
703 views

How should this system be protected from ARP spoofing?

Background My university uses an authenticated (squid) HTTP proxy server for accessing the internet. There are a few reasons for this: They want to track misuse of the connection Our university has ...
3
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1answer
3k views

Problem with ARP-Spoofing

first of all i have a basic questions regarding network traffic: All Devices in the network are connected with WLAN and a Router. If i send a message from my computer to a other device in the network ...
3
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2answers
615 views

ARP-spoofing: why does the attacker constantly send ARP replys?

I have understood the basic concept of how arp-spoofing works. However, I am struggling with the details. Why does an attacker have to constantly send out spoofed arp-announcements to the network? ...
3
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1answer
623 views

Arpspoof on Debian - Linux isn't working [closed]

I'm using the following code: >sudo bash >echo 1 > /proc/sys/net/ipv4/ip_forward >arpspoof -i wlan0 -t [Victim IP] [Gateway IP] #on terminal num.1 >arpspoof -i wlan0 -t [Gateway IP] [...
3
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1answer
574 views

Arp replay for cracking WEP key IN Aircrack-ng

I'm pretty new to all of this so it might be a little stupid question... but why do we need to wait to capture an arp packet from a client to the AP? Can't we just send a 'fake' arp request to the AP ...
3
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2answers
678 views

Arp-spoofing local network, Devices can't see eachother

I'm a computer security student whom has recently been tasked with conducting an arp spoofing attack on a couple devices on a test network. The issue I'm facing is that none of the devices seem to be ...
3
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1answer
408 views

Is it possible to retrieve SSH v2 credentials in a username/password authentication scheme?

I'm currently analysing a compromised network(root access has been gained to a workstation and logs show that it has been used for port scanning and service brute forcing attacks on the remaining ...
3
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2answers
1k views

Why the ARP entry of the router recover so quickly after ARP poisoning?

I use Cain to ARP spoof my host and the router. Then I use arp -an to show the ARP entries on my host. For a second or two, I can see the router's MAC address is changed to the address of the ...
3
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1answer
3k views

Victim system's internet connection slow after ARP spoof?

I've been using Nemesis 1.4 to test ARP spoofing on a local victim machine. I've been spoofing both the victim machine and the default gateway to ARP redirect to my machine. Spoofing victim's source ...