How to Whitelist ATAS Data Feeds on Your VPS

Whitelisting ATAS ports and IPs in your Windows VPS firewall can help improve connection stability and reduce interruptions, especially during high-volume trading hours. Follow the steps below to create both inbound and outbound rules using Windows Defender Firewall with Advanced Security.

IPs and ports last verified: July 2026.

Step 1: Open Windows Defender Firewall

1. On your VPS, search for and open:

   Windows Defender Firewall with Advanced Security

2. In the left sidebar, you’ll see options for Inbound Rules and Outbound Rules

Step 2: Whitelist Ports 6450

1. Go to Inbound Rules
2. Click New Rule → choose Port → click Next

3. Select TCP and enter:

   6450

4. Select Allow the connection → click Next
5. Apply to all profiles (Domain, Private, Public)
6. Name the rule: ATAS Ports
7. Click Finish

Step 3: Outbound Rule (Ports)

Repeat the same steps above under Outbound Rules

→ Name the rule: ATAS Ports (Outbound)

Step 4: Whitelist ATAS IP Addresses (Inbound Rule)

1. Still under Inbound Rules, click New Rule
2. Select Custom, then click Next

3. Navigate to the Scope tab

   • Under “Remote IP address,” select These IP addresses

   • Click Add, and input each of the following IPs one by one:

     51.178.130.10
     142.132.201.231
     65.21.32.251
     135.181.115.236

4. Under Protocol and Ports, leave default (Any) → click Next
5. Under Action, select Allow the connection → click Next
6. Apply to all profiles → click Next
7. Name the rule: ATAS - Inbound IPs
8. Click Finish

Here is the matching Outbound Rule section for whitelisting ATAS IPs:

Step 5: Whitelist ATAS IP Addresses (Outbound Rule)

1. Go to Outbound Rules, click New Rule
2. Select Custom, then click Next

3. Go to the Scope tab

   • Under “Remote IP address,” select These IP addresses

   • Click Add, and enter each of the following IPs one by one:

     51.178.130.10
     142.132.201.231
     65.21.32.251
     135.181.115.236

4. Under Protocol and Ports, leave as default (Any) → click Next
5. Under Action, choose Allow the connection → click Next
6. Apply to all profiles → click Next
7. Name the rule: ATAS - Outbound IPs
8. Click Finish

Step 6: Confirm Rules Are Active

After adding the rules:

• Open the Firewall rule list under Inbound and Outbound Rules.
• Ensure the new rules are listed and enabled (green checkmarks).
• Restart your platform and test connectivity to confirm improvements.

Pro Tip: Use This PowerShell Script to Automate the Entire Process

# ===============================
# ATAS Firewall Whitelist Script
# ===============================

# Run as Administrator

Write-Host "Creating Windows Firewall rules for ATAS..." -ForegroundColor Cyan

# --- Step 2: Inbound Port 6450 ---
New-NetFirewallRule -DisplayName "ATAS Port (Inbound)" `
    -Direction Inbound -Action Allow -Protocol TCP -LocalPort 6450 `
    -Profile Domain,Private,Public

# --- Step 3: Outbound Port 6450 ---
New-NetFirewallRule -DisplayName "ATAS Port (Outbound)" `
    -Direction Outbound -Action Allow -Protocol TCP -LocalPort 6450 `
    -Profile Domain,Private,Public

# --- Step 4 & 5: Whitelist ATAS IP (Inbound & Outbound) ---
$atasIPs = @(
    "51.178.130.10",
    "142.132.201.231",
    "65.21.32.251",
    "135.181.115.236"
)

foreach ($ip in $atasIPs) {
    # Inbound IP rule
    New-NetFirewallRule -DisplayName "ATAS - Inbound IP $ip" `
        -Direction Inbound -Action Allow -RemoteAddress $ip `
        -Profile Domain,Private,Public -Protocol Any

    # Outbound IP rule
    New-NetFirewallRule -DisplayName "ATAS - Outbound IP $ip" `
        -Direction Outbound -Action Allow -RemoteAddress $ip `
        -Profile Domain,Private,Public -Protocol Any
}

Write-Host "ATAS Firewall Rules have been successfully created." -ForegroundColor Green

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