If you need to look up more than one piece of data, you can use interactive mode. If you omit the second argument, nslookup uses the default DNS name server. For the second parameter, type the name or IP address of a DNS name server. For the first parameter, type the name or IP address of the computer that you want to look up. If you need to look up only a single piece of data, we recommend using the non-interactive mode. The nslookup command-line tool has two modes: interactive and noninteractive. The nslookup command-line tool is available only if you have installed the TCP/IP protocol.
Before using this tool, you should be familiar with how DNS works. In order to avoid the detection process itself being detected, typically tools will avoid sending mass amounts of ICMP packets that clearly show anyone monitoring the network the intentions of the attacker but instead try other methods (such as attempting connections on well-known ports).Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012ĭisplays information that you can use to diagnose Domain Name System (DNS) infrastructure.
The third thing that may be happening is that it is not a standard ICMP ping being used to detect hosts and the remote firewall is blocking detection. You may have been scanning on an interface that only contains your machine (maybe a virtual interface). This network range may have been detected by looking at the interface address as it can be calculated from the machine's IP and the netmask. Typically a home network will go from 192.168.1.1 to 192.168.1.254 which can also be represented as 192.168.1.0/24 in CIDR format. If you've specified this yourself, you may have specified it incorrectly. It is not really feasible to ping every possible address in order to discover machines, hence the address range of your local network must be known. There are a few things that might be happening here.
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