Stack Exchange Network

Stack Exchange network consists of 175 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]

The tag has no usage guidance.

0
votes
0answers
16 views

How to run `arp-scan` on an interface that's modified by netplan?

I have a link-local address set up for an ethernet dongle via netplan: # For USB eth dongle network: version: 2 renderer: NetworkManager ethernets: enx00249b1ec202: dhcp4: no ...
0
votes
0answers
79 views

No internet access after random intervals in Ubuntu 18.04.2 LTS

I use WiFi for connecting to internet using my Ubuntu 18.04.2. It works fine. But, after some random interval of time, the internet connectivity goes down. The WiFi is still on and the device is ...
0
votes
0answers
79 views

How to Install Arpon on Ubuntu 18.10?

The instructions for Ubuntu 16.04 are out of date (the config file does not list the same settings). For example there is no DAEMON_OPTS="-q -f /var/log/arpon/arpon.log -g -D" RUN="yes" latest ...
0
votes
1answer
41 views

ip neigh display a mac address at a coffee store

I am working at a coffee store and tried command ip user@host:~$ ip neigh 192.168.1.1 dev wlp3s0 lladdr 5c:dd:70:96:80:52 REACHABLE I am aware that 192.168.1.1 is the router address, How about ...
0
votes
0answers
2k views

“no route to host”: Peer to Peer Network between laptop and Raspberry Pi not working

I've been attempting to establish a peer-to-peer network between my laptop (Ubuntu 16.04.2, Codename: Xenial) and my Raspberry Pi 3 (Raspbian, Codename: Stretch, 9.1). After attempting to connect with ...
0
votes
1answer
222 views

How to make nmap consult arp table

I want to use nmap in a subnet with the following command: nmap -T3 -F 192.168.1.0/24 My net has some interferences that make broadcast packets to be lost, so I add to my arp table the mac and ip to ...
0
votes
1answer
462 views

Policy Routing - host sending ARP requests for non-local networks

I'm in need of some assistance troubleshooting a policy routing issue. I have a linux host with multiple VLANs. I'm trying to create a unique routing table for each VLAN (20 in this example) and I ...
1
vote
0answers
122 views

ARP Cache Not Caching Virtual Host IP

I'm using a web application known as IOU-Web. This application is used to execute CISCO IOS software in a browser. Here is what topology looks like And here is what interfaces config snap Now the ...
0
votes
1answer
371 views

Which arptables rules to avoid man-in-the-middle attack?

One strategy to stop a man-in-the-middle attacker is to restrict accepted ARPs packet to only those need to the router. What are the arptables rules to restrict accepted ARPs to only my router with ...
5
votes
2answers
101 views

Problems while switching IP and MAC adresses

I've got two Ubuntu-Servers, each of them with two Ethernet cards. I'm trying to switch from one to the other for high availability purposes. Unfortunately, when querying arp I always get the MAC ...
2
votes
0answers
598 views

static mapping between ipv6 address and MAC (equivalent to static arp in ipv4) [closed]

I want to define in static mapping between ipv6 address and MAC address.(something similar to static arp in ipv4). (i need to do this because my ubuntu machine is connected by lan to interface that ...
3
votes
2answers
391 views

How to format arp -a output?

I'm trying to format arp -a output to my liking. For example at the moment it outputs: MyRouter (172.16.3.x) at XX:XX:XX:XX:XX:XX [ether] on eth0 PC1 (172.16.3.x) at XX:XX:XX:XX:XX:XX [ether] on eth0 ...
0
votes
1answer
746 views

One computer is not able to receive ARP replies (ping) in a local network

I have two computers connected via a router (modem), and I can't ping one from the other. I'm running ARP, TCP dump on both of them. The ARP requests from System 1 are getting passed on to system 2, ...
2
votes
2answers
703 views

Get the MAC address of a connected, unlabeled, unconfigured, unconfigurable ethernet device?

Suppose you have some embedded board with ethernet plugged into the ethernet port on your laptop. You know nothing about it's network configuration (yet). You know it boots, but it is headless and ...
0
votes
1answer
418 views

How to check how long specific entry in arp table will stay and when it'll be expired?

I know how to setup how long arp entry are cached. But - how to check how long specific entry will stay in arp table, and when next arp request will be made or arp entry disapear from table/ change ...
0
votes
1answer
11k views

How can I delete and ARP cache entry on Ubuntu 14.04LTS via command-line?

This is my ARP cache on Ubuntu 14.04.2 LTS 64 bits (it is in spanish, sorry): luis@Terminus:~$ arp -a Windu- (192.168.11.100) en ac:22:0b:51:dd:33 [ether] en eth0 Router- (192.168.11.1) en 00:24:a5:...
2
votes
1answer
703 views

Finding all used IP addresses within a LAN without assigning an IP address to your NIC?

Is there any way that you can find all the IP addresses within a LAN without assigning a IP address to you NIC? I know most of the tools like angryipscanner, arp-scan, nmap and others can mostly ...
0
votes
1answer
145 views

Location of arp cache

I can see my arp cache if I enter arp into the terminal. I want to know the file location of the arp cache in Ubuntu.