Discovery > Discovery Modules > Network Infrastructure > DNS Zone Discovery > Hosts by Shell using nslookup on DNS Server Job

Hosts by Shell using nslookup on DNS Server Job

This job discovers hosts by querying all available DNS servers.

ClosedAdapter

ID: NSLOOKUP_on_DNS_Server

ClosedTrigger TQL

Node Name Condition
IpAddress NOT IP Probe Name Is null
Shell NOT Reference to the credentials dictionary entry Is null
ClosedParameters
Name Description
DNSServerDomain The DNS Server Domain.
DNSServerName The DNS Server Name.
discoverUnknownIPs This flag determines whether to discover IPs that are out of the probe range.
ClosedDiscovery Flow
  1. Establish a connection with the DNS server.

  2. Determine target DNS server and domain to transfer by checking the input parameters DNSServerName and DNSServerDomain respectively, and running the nslookup command to request the default server name and its domain.

  3. List and process all IPv4 (A) DNS records.

  4. Report hosts based on listed IP addresses.