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Windows Firewall helps prevent unauthorized access to computers in a network. The Windows Firewall is turned ON after the operating system is installed. If a firewall is turned ON but is not configured correctly, attempts by the users to connect to SQL Server and Velocity are blocked. To access an instance of SQL Server behind a firewall, the database administrator needs to configure the firewall on the computer that is running SQL Server to allow users accessoperating system has built-in Firewall settings that allow users to control which applications can connect to the internet. By default, Windows will automatically enable connections for known applications. The users can also manually configure the firewall to add inbound or outbound rules to specific applications.

Some networks use the software firewall provided by Microsoft Windows, others use a software firewall provided by a different vendor (as shown in the following image), and high-security networks include hardware firewalls.

To turn Microsoft Defender Firewall on or off, refer https://support.microsoft.com/en-us/windows/turn-microsoft-defender-firewall-on-or-off-ec0844f7-aebd-0583-67fe-601ecf5d774f#ID0EFD=Windows_10 .

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Here is a table that lists the Ports, TCP, UDP and their corresponding service used in Velocity.

Port

TCP

UDP

Service

Description

2025

X

Velocity Client

Velocity Client uses this port

X

Velocity SD

Velocity SD uses this port

X

DIGITRAC

Velocity DIGITRAC uses this port

X

Extension Service

Velocity Extension Service uses this port

X

Web Service (Velocity4.Service.Host.exe)

Velocity Web Service uses this port

X

IDS Integration service

Velocity IDS Integration uses this port

X

Video Service

Velocity Video Service using this port

X

Velocity SDK

Velocity SDK using this port

4056

X

Velocity Cert Check Service Enrollment Listener

VCCS Enrollment Listener using this port

4997

X

Velocity SQL Writer Client

Velocity SQL Writer Client using this port

4998

X

Velocity SQL Writer Server

Velocity SQL Writer Server using this port

4070

X

Edge service

Velocity Edge service uses this port

8000

X

Velocity Video Service

Velocity Video service uses this port

9096

X

Velocity Video Real.exe

Velocity Video Real application uses this port

11000

X

Velocity IDS Service

Velocity IDS service uses this port

80

X

HTTP

HTTP service uses this port

161, 465

X

SNMP

SNMP service uses this port

162

X

SNMP Trap

SNMP Trap messages uses this port

1433, 1434

X

MS SQL

MS SQL uses this port

53

X

X

DNS

DNS uses this port

9910

X

MS Discovery Protocol

MS Discovery Protocol uses this port

123

X

NTP Time Service

NTP time service uses this port

443

X

SSL/SCVP Certificates Status Requests

SSL/SCVP Certificates uses this port

389

X

X

LDAP / Issuer Certificate and CRL downloads

LDAP / Issuer Certificate and CRL downloads use this port

135

X

Remote Procedure Call (RPC)

RPC uses this port

10001

X

X

DIGITRAC Hardware

DIGITRAC

Hardware

uses this port

445

X

SMB

SMB uses this port

133- 139

X

NetBIOS

NetBIOS uses this port

25

X

SMTP

SMTP uses this port

19001

X

SNIB Config

SNIB Config Tool uses this port for discovery process

19002

X

SNIB Config

SNIB Config Tool uses this port for discovery process

-19003

X

SNIB

Config

Configuration

SNIB Config Tool uses this port for discovery process