In the tip Vista Firewall blocks a ping from the network wrote how to set the Vista firewall to block pings from the network. This article asks whether there is any use in not being found in the network.
The Windows firewall allows ping requests to be blocked. Is it possible to hide a computer in the network like this? The answer is "No". Here, for example, there is the ARP protocol.
Address Resolution Protocol (ARP)
The protocol is used for address resolution from network addresses to hardware addresses. ARP runs automatically in the Windows background. The ARP has its own cache here, Mac addresses and the associated IP address are saved in the network when the computer is restarted, the cache is deleted.
It takes a while, but after a while you can display all devices in the network with the following command.
(C) Copyright 1985-2001 Microsoft Corp.
C: \> arp -a
Interface: 192.168.0.10 --- 0x2
Internet address physical. Address type
192.168.0.20 00-10-1c-e0-9f-f1 dynamisch
So it is not Pointless to block the ping through the firewall in order to hide in the network. Every computer in the network (Internet) must respond to ARP requests, otherwise it would not be able to participate in network traffic.
With the command arp /? you can display parameters and information about the command.
(C) Copyright 1985-2001 Microsoft Corp.
C: \> arp /?
| Transparency: | This article may contain affiliate links. These lead directly to the provider. If a purchase is made through this, we receive a commission. There are no additional costs for you! These links help us to refinance the operation of win-tipps-tweaks.de. |
This tip comes from www.win-tipps-tweaks.de
© Copyright Michael Hille
Warning:
Using Registry Editor or its tips incorrectly can cause serious system problems that may require you to reinstall your operating system. Tampering with the registry files and using the tips is at your own risk.