All Questions
12
questions
-4
votes
2
answers
313
views
If I changed my MAC address, does it effect my ethernet to internet in anyway?
I'm on a public network and I can connect to WiFi for free but to use internet I need to put username and password.
And when my card ended I usually see who's the network with me like I'm doing right ...
0
votes
1
answer
140
views
Why all the MAC addresses on my network is the same?
When I write arp -a on CMD I found all the devices that connected to me network. But the problem is they all have the same MAC addresses?
How can I get the MAC addresses for all of them? Is there any ...
0
votes
2
answers
2k
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
1
vote
0
answers
519
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 ...
- 2,885
1
vote
0
answers
123
views
Iputils arping works good with ethernet devices but not with wifi devices
I am developing an application for an embedded device to check whether a particular network device present in the local network (192.168.1.1 - 192.168.1.254) is alive.
Initially I was using ping to ...
- 11
3
votes
3
answers
4k
views
How does a router find it's default gateway?
I understand Address Resolution Protocol and how it broadcasts to all devices on the subnet to find the MAC address of the destination. I know when a computer is unable to find the destination ...
- 161
0
votes
1
answer
64
views
Working around IP Conflicts with ARP meddling or custom TCP/IP stack
Slightly interesting conundrum, I have a network of 15-20 embedded devices that are effectively hard coded with the same static IP address, but they all have different MAC ID's. I need to address ...
- 893
0
votes
0
answers
25
views
withdraw MAC address assignment
Is it possible to un-claim ownership of a MAC address via special kinds of gratuitous ARP or possibly by sending ARP packets with special addresses (e.g. 00:00:00:00:00:00) to invalidate cache table ...
- 182
1
vote
1
answer
6k
views
Why am I not seeing ARP requests from my own machine in wireshark?
I am using Windows 7. I open up Wireshark and start a live capture with the filter: ip.src == THIS.IS.MY.IP
I then go to a command line and do an arp -d * and ping a bunch of stuff.
I see my ICMP ...
- 1,045
0
votes
1
answer
1k
views
Adjusting Ethernet Frame padding for ARP protocol in windows
Is it possible to configure the count of trailing (padded octets) used for stuffing the ARP messages created by Windows 2008?
NOTE: I hoped, but could not find any info in the TCPIP_Reg.doc from ...
- 182
1
vote
3
answers
38k
views
Two computers cannot ping one another - both connected to the same switch
I've got two physical computers which are connected to the same unmanaged switch. Said switch is connected to a server handing out IP addresses and acting as a gateway.
This works fine. Clients that ...
- 121
1
vote
1
answer
2k
views
What happens when an ARP Request arrives to an Ethernet switch?
I remember reading somewhere that switches defined "data link layer broadcast domains": that is, data link broadcasts from one network connected to the switch are not forwarded to the others.
If this ...
- 428