While enumerating acme.local you obtain a successful zone transfer from ns1.acme.local; the records include: acme.local. 3600 IN MX 10 mail.acme.local. _mail._tcp.acme.local. 3600 IN SRV 0 0 25 mail.acme.local. _ldap._tcp.dc._msdcs.acme.local. 3600 IN SRV 0 100 389 dc01.acme.local. www 3600 IN A 10.10.5.20 Which host should you target next for LDAP enumeration to harvest directory information?
The SRV record that begins with _ldap._tcp.dc._msdcs advertises the host that offers the LDAP service for the domain-in this case dc01.acme.local listening on port 389. A domain controller running LDAP commonly exposes user and group objects that can be queried with tools like ldapsearch or enum4linux. The mail server and web server provide SMTP and HTTP services respectively, and the authoritative name server primarily answers DNS queries; neither is the optimal choice for LDAP-specific reconnaissance.
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