learning

Open port for Domain Controllers

The following is the list of services and their ports used for Active Directory communication: UDP Port 88 for Kerberos authentication UDP and TCP Port 135 for domain controllers-to-domain controller and client to domain controller operations. TCP Port 139 and UDP 138 for File Replication Service between domain controllers. UDP Port 389 for LDAP to [...]


Understanding space reservation for volumes and LUNs

Form Netapp Data ONTAPĀ® 7.2 – Updated for Data ONTAP 7.2.3: Good to remember: What space reservation is Data ONTAP uses space reservation to guarantee that space is available for completing writes to a LUN or for overwriting data in a LUN. When you create a LUN, Data ONTAP reserves enough space in the traditional [...]


Using Nmap – Nmap command

Nmap is a tool used for determining the hosts that are running and what services the hosts are running. Nmap can be a valuable diagnostic tool for network administrators while they can be also a potent reconnaissance tool for the Black-hat community (Hackers, Crackers, Script Kiddies, etc). Once the network is charted out using tools [...]