Section 01: Enumeration Concepts

Enumeration

Enumeration

Enumeration is defined as the process of extracting user names, machine names, network resources, shares and services from a system.

Techniques used for enumeration

• Retrieving usernames for emails or vice versa

• Extract information from default credentials

• Extract information from brute forcing

• Extract information during data transfer

Services to Enumerate

A list of services to enumerate is listed below

• TCP/UDP 53 DNS (Domain Name System)

• TCP/UDP 135 Microsoft RPC (Remote procedure call)

• TCP/UDP 137 NetBIOS

• TCP 139 NetBIOS (SMB over NetBIOS)

• TCP/UDP 445 SMB (Server message block)

• UDP 161 SNMP (Simple network management protocol)

• TCP/UDP 389 LDAP (Lightweight Directory Access Protocol)

• TCP 2049 NFS (Network File System)

• TCP 25 SMTP (Simple mail transfer protocol)

• TCP 22 SSH (Secure Shell)

• TCP 20/21 FTP (File transfer protocol)

• UDP 69 TFTP (Trivial File Transfer Protocol)

• TCP 179 BGP (Border gateway protocol)

• UDP 123 NTP (Network Time Protocol)

Links

• https://en.wikipedia.org/wiki/Domain_Name_System

• https://en.wikipedia.org/wiki/Microsoft_RPC

• https://en.wikipedia.org/wiki/NetBIOS

• https://en.wikipedia.org/wiki/Server_Message_Block

• https://en.wikipedia.org/wiki/Simple_Network_Management_Protocol

• https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol

• https://en.wikipedia.org/wiki/Network_File_System

• https://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol

• https://en.wikipedia.org/wiki/File_Transfer_Protocol

• https://en.wikipedia.org/wiki/Telnet

• https://en.wikipedia.org/wiki/Trivial_File_Transfer_Protocol

• https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers

• https://en.wikipedia.org/wiki/Border_Gateway_Protocol

• https://en.wikipedia.org/wiki/Network_Time_Protocol