Packet filtering

On the Internet, packet filtering is the process of passing or blocking packets at a network interface based on source and destination addresses, ports, or protocols. The process is used in conjunction withpacket mangling and Network Address Translation (NAT). Packet filtering is often part of a firewall program for protecting a local network from unwanted intrusion. In a software firewall, packet … Continue reading →

Firewall

Firewall can either be software-based or hardware-based and is used to help keep a network secure. Its primary objective is to control the incoming and outgoing network traffic by analyzing the data packets and determining whether it should be allowed through or not, based on a predetermined rule set. A network’s firewall builds a bridge between … Continue reading →

How to fix “HostDatastoreSystem.CreateNasDatastore” for object “ha-datastoresystem” error when setting up VMware ESXi NFS data store

If you try to add a remote NFS data store forVMware Esxi, you may encounter this error: Call “HostDatastoreSystem.CreateNasDatastore” for object “ha-datastoresystem” on ESX “{ESX server}” failed: This is often a firewall issue, and the very first place you should look. Browse to Configuration/Software/Security Profile and verify that the  “NFS Client” is listed under “Outgoing … Continue reading →