Consider that we are working on a Local Area (LAN). In this case, I use the mac address of the destination device for destination MAC address for ethernet header. This is working.
But, I don't know, which Mac address should be used on Global Network (WAN).
Mac address of the Router of destination device?
Mac address of the Router of source device?
Mac address of the destination device?
I draw a schema to explain my question. But I'd needed at least 10 reputation to post images.
I tried several combinations and I realized that in Wide Area, the destination Mac address in the ethernet header should be the default gateway's Mac address of the device. In my stuation, it was "Mac address of the Router of source device".
Related
I need to find out the devices IP so that I can manually set my laptops computer to the devices network and reconfigure the devices IP. I have only its MAC address which was acquired from the devices label. I am new to networking trouble shooting. I am hoping to do this using Windows PowerShell, but I also have wireshark and linux available.
This might help you if the firewall is not active on that device.
In one cmd.exe ping your broadcast address, assuming your ip is 192.168.0.X
ping -t 192.168.0.255
In another cmd.exe window type arp -A to see your ARP table aka MAC to IP address table, because you mention you have the MAC you should be able to see the IP
arp -A
How it works? This will send ping packets to the broadcast address, everybody on your broadcast domain will see the packet and respond to it, once they respond they will be added to your computer ARP table.
I try to find the IP adresse of a Raspberry PI (LINUX) that is connected to the same Network as the iOS device my code is running on.
Is there some way to "find all" ip adress in the network the device is currently joined via SWIFT?
If you ping the broadcast address, unless devices are specifically configured not to replay, they will do so. How you do that with Swift is another question.
This question+answer will work if you know your IP address, you need to probe all the probable addresses of course.
How to check Internet is working or not in ios
Does anyone know how you can perform OS fingerprinting using MAC address? What about os fingerprinting with IP address?
Thanks in advance.
for MAC address i dont know....but for ip address u can use xprobe2..but u need to be connected to the network and know their internal IP... in terminal type xprobe2 192.168.xx.xx
replace xx with the ip address.
I like to change DNS address of iPhone through my application. Is it possible ? Any one let me know how i can do it, it will be very helpful. Thanks in advance.
If by DNS address you mean the IP address of the DNS server the iPhone uses for queries to resolve the domain name you provide, then it is not possible in a non-jailbreaked device. The IP address of the DNS server is provided to the iPhone through DHCP. So you would therefore have to change the DHCP settings in the setup of the network you connect to, eg. the Wifi access point.
If you want to change the IP address assigned to the iPhone (and possibly provided to other devices through DNS) then again you would have to modify the DHCP settings on your server. This IP address is provided to the iPhone through DHCP and possibly coordinated with the DNS server in the network.
Unfortunately it's not possible from an app. Oh, and I believe you mean IP address, right?
there was a trick to reset an ip address by turning airplane mode on and off, but the ip address is assigned to you by the network you are connecting to. In the apps you don't have a way to request a "reset" like this. this is done on the system level and not exposed as a method an app can use
google up netinfo+ its an app for setting dns on iphone
I have been looking for the answer to this question for some time. I am doing network programming for the iPhone and it is necessary for me to use the IP address of the device. This isn't a problem on the physical device as it has its own IP address on the network. However I was wondering what was the case with it on the simulator. Does it get assigned an IP address to be used?
The ip address of the machine you are running it on
should be 127.0.0.1