Information Security

Questions tagged [arp]

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0answers
51 views

NMAP not showing all live hosts

I have a live host on 192.168.0.151 on my local network. I know it's live since I've set it up with a static IP and also if pinged, I get a reply. The weird thing is when I run nmap -sP 192.168.0....
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137 views

Why isn't there a defense system against ARP poisoning?

Wireshark can detect these kind of activites, and warn us by a 'duplicated ip address' message. Why doesn't the router act like this? The other way is to check the cache, and don't allow two different ...
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2answers
294 views

Why can't iptables drop arp requests

I was trying to hide my laptop from my phone's network scan app. The app is using arp requests to find devices on the network. I tried everything on iptables. It doesn't work, even if i set all the ...
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1answer
102 views

ARP poisoning NAC

I need some help in understanding the technique of Genians/Trustwave NAC regarding ARP poisoning. As seen here Bypassing Trustwave NAC, it looks like a good method, but I don't simply get it. With ARP ...
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1answer
408 views

ARP request replay attack - why do APs work the way they do?

ARP request replay attacks are based on the practice that wireless access points repeat ARP packets injected into the network, and since these ARP packets are encrypted, they also carry the IV with it....
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Does having a static ARP with a client offline cause a mac spoofing risk?

If you have all the IPs and MACs specified in /etc/ethers and one of the cilents specified goes offline, does that cause a risk that someone could spoof a mac address?
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1answer
301 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 ...
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259 views

What are all of these IPs addresses? Honeypots?

I was scanning my network (192.168.0.1-100) and I found many IP addresses that are not mine nor known, around 800 of them. I guess it has something to do with the ISP. After scanning the ips with nmap ...
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169 views

ARP poisoning command slows down victim internet and victim has no access

im currently enrolled in a CPEH course my 3rd lab was arp poison. command i used is echo -1 > /proc/sys/met/ipv4/ip_forward iptables -t nat -A PREROUTING -p tcp --detination-port 80 -j REDIRECT -...
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2answers
202 views

Does ARP spoofing works in case the target ARP cache has the gateway

I am trying to create a script that will do a basic ARP spoofing attack (I choose this StackExchange website because the question is more about the theoretical side), and I see no reference to the ...
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2answers
568 views

Ettercap man in the middle - ARP poison

I am experimenting a bit with Ettercap in my local Wifi Lan. I have a router (R), my pc (P) with Ettercap running on it and my smarthphone (S). In particular am testing the ARP poison MIM attack and ...
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1answer
2k 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 ...
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3answers
360 views

ARP request spoofing

I'm working on an SDN-based access/backhaul network. For some experiments I need to generate an ARP request from one of the node in my network, pretending to be another one. Essentially this ARP ...
3
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2answers
2k views

Best practice to discover network hosts?

I'm creating a python networking program and need to discover all the usable hosts on the network such as phones and desktops on Linux. What works better, NMAP, Arp-Scan, arp, or something else? I've ...
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1answer
447 views

Can't see ARP poisoning packets on Wireshark and Scapy

I'm trying to create a python script to detect ARP poisoning on WiFi networks. I'm using scapy and wireshark to check scapy's output. I'm stuck trying to see all ARP traffic on the network, I can only ...
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1answer
119 views

Why arp returns initial state after arpspoof stopped?

I'm wondering why ARP table in my laptop returns to its initial state when arpspoof tool attack is stoppped. Is there any option for the attacker to modify the victims ARP table until the default ...
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2answers
2k 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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1answer
1k views

Is it possible to Spoof Another Machine's MAC Address on LAN?

Is it possible to Spoof Another Machine's MAC Address on LAN? I know we can spoof mac address of machine that we are currently on, using macchanger or ifconfig wlan0 ether de:ad:be:ef:ca:fe. But I ...
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1answer
294 views

How to test DoS attack by sending unsolicited ARP packets over ethernet?

I want to test a system for DoS attack using ARP packets as the system only responds to ARP packets and left all ports are closed. Can nmap or arping help in this case?
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3answers
894 views

Force a device to give up its IP address?

Expanding to a previous question where I asked if it would be possible to redirect traffic on a port from another device to my local device, if a PC on my network (device A) has the IP address 192.168....
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0answers
154 views

How is ARP-spoofing of a Modular CMTS online connection via coaxial broadband even possible?

as one can see on the following screen photos / screenshots, I'm permanently getting ARP-spoofed: My router's MAC adress should be "90:5C:44:E2:8D:24", as can be seen on the screenshot of my router's ...
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0answers
354 views

Why computer answers an Arp Request made by Itself

I am studying about arp, and I want to know more about how it works. Right now, I am using Wireshark and this function that returns the mac address from a given ip address ipAddress: ...
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279 views

Arp Spoofing detection with Ruby [closed]

I am planning to develop a Ruby script that detects ARP spoofing attacks on a local network, I have a few questions about it. There are three scenarios I am taking into consideration: First idea as ...
2
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1answer
348 views

ARP poisoning attack consequences

For testing purposes, I want to apply promiscuous mode in Wireshark to capture traffic not sent to me. For this, I believe there is the need to poison the ARP table in the switch so that the attacker ...