Explanation:
This command allows you to display the current firewall ruleset configuration on an ESXi host.
It will show the ruleset names, whether they are enabled or disabled, and the services and ports that the ruleset applies to.
For example, you can use the command "esxcli network firewall ruleset list" to list all the firewall rulesets on the host.
You can also use the command "esxcli network firewall ruleset rule list -r <ruleset_name>" to display detailed information of the specific ruleset, where <ruleset_name> is the name of the ruleset you want to display.
It's important to note that you need to have access to the ESXi host's command-line interface (CLI) and have appropriate permissions to run this command.
https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vcli.ref.doc/esxcli_network_firewall_ruleset.html

Explanation:
The two prerequisites before configuring the VMware Identity Manager (vIDM) service for NSX-T Data Center are Configure vIDM Integration and Certificate Thumbprint from vIDM. In order to use vIDM for authentication, it must be integrated with NSX-T Data Center, which will involve configuring the vIDM integration service. Additionally, a certificate thumbprint from vIDM must be provided to NSX-T Data Center to enable secure communication between the two services. Time synchronization and assigning roles to users are not necessary prerequisites for configuring the vIDM service.
References: [1] https://docs.vmware.com/en/VMware-NSX-T/3.0/vmware-nsx-t-30-administration-guide/GUID-1B4EA3C9-8F43-4C4F-A86A-BFB0DB6D1A6C.html [2] https://docs.vmware.com/en/VMware-Identity-Manager/3.3/com.vmware.identity.install.doc/GUID-D56A0C0A-52F

Explanation:
To use URL Analysis, you will need to have a Tier-1 gateway and a Layer 7 DNS firewall rule on the NSX Edge cluster. Additionally, you will need to configure an OFW rule allowing traffic OUT to the Internet. Lastly, a medium-sized edge node (or higher), or a physical form factor edge is also required as the URL Analysis service will run on the edge node. For more information, please see this VMware Documentation article[1], which explains how to configure URL Analysis on NSX.
[1] https://docs.vmware.com/en/VMware-NSX-T-Data-
Center/3.1/nsxt_31_url_analysis/GUID-46BC65F3-7A45-4A9F-B444-E4A1A7E0AC4A.html

Explanation:
Zero-Trust with segmentation is a security strategy that uses micro-segmentation to protect a network from malicious actors. By breaking down the network into smaller segments, the NSX Distributed Firewall can create a zero-trust architecture which limits access to only users and devices that have been authorized. This reduces the risk of a malicious actor gaining access to sensitive data and systems.
Lateral Movement of Attacks prevention is another use-case for the NSX Distributed Firewall. Lateral movement of attacks are when an attacker is already inside the network and attempts to move laterally between systems. The NSX Distributed Firewall can help protect the network from these attacks by controlling the flow of traffic between systems and preventing unauthorized access.
References: https://www.vmware.com/products/nsx/distributed-firewall.html https://searchsecurity.techtarget.com/definition/zero-trust-network

Explanation:
The dot color that indicates an on-going attack of medium severity in the IDS/IPS events tab of NSX-T Data Center is a solid orange dot. This indicates that the attack has been detected and is ongoing at a medium severity level.
References: https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.1/nsxt_31_admin_guide/GUID-A8FAC8A1-F9F9-43EC-A822-F2F2CB5C5E5A.html#GUID-A8FAC8A1-F9F9-43EC-A822-F2F2CB5C5E5A
In the IDS/IPS events tab of NSX-T Data Center, different colors of dots are used to indicate the severity of an attack.
✑ A solid red dot indicates a critical attack, which is the highest severity level.
✑ A solid orange dot indicates a medium attack, which is a moderate severity level.
✑ A solid yellow dot indicates a low attack, which is the lowest severity level.
In this case, a solid orange dot is used to indicate an on-going attack of medium severity in the IDS/IPS events tab of NSX-T Data Center.
It's worth noting that there is no blinking dots in this context, all the dots are solid.
References:
✑ VMware NSX-T Data Center documentation https://docs.vmware.com/en/VMware-NSX-T-Data-Center/index.html
✑ VMware NSX-T Data Center Intrusion Detection and Prevention documentation https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.1/com.vmware.nsxt.ids.doc/GUID-C4ED1F4D-4E4B-4A9C-9F5C-7AC081A5C5D5.html