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To securely allow your **Dev environment** to access files from **Prod** in your **on-prem Kiteworks Managed File Transfer (MFT)** setup, you need a **segregated, auditable, and policy-controlled** design. Here's a secure and scalable design approach:

---

## 🔒 **1. Principles to Follow**

* **Environment Isolation**: Never allow direct Dev access to Prod systems.
* **Controlled Transfer**: Pull data from Prod via intermediaries or APIs with limited scope.
* **Auditability**: Log all file movement across environments.
* **Least Privilege**: Use the minimum access needed for the transfer.

---

## 🧱 **2. Design Pattern Overview**

```
Prod → Controlled Export Node → Sanitization → Dev
```

---

### ✅ **3. Steps to Implement**

### Step 1: **Export Node or Drop Zone in Prod**

* Set up a **Kiteworks shared folder** (or SFTP drop-zone) in Prod for export.
* Only certain Prod users/applications can **write to** this folder.
* Example: `/export/dev-dumps/`

### Step 2: **Automation for Export**

* Use a **scheduled job** or **event-triggered workflow** in Prod to:

  * Sanitize or redact sensitive info (if needed).
  * Package and push data to the shared folder.
  * Apply retention (e.g., delete after 7 days).

### Step 3: **Intermediary Secure Account or Gateway**

* Create a **“Transfer Account”** (service account) with read-only access to the Prod export folder.
* Use a **dedicated MFT gateway** (or intermediate file mover, such as a secure DMZ jump server) to:

  * Pull files from Prod export location.
  * Log and checksum them.
  * Transfer to a UAT-approved location in Dev.

### Step 4: **Inbound Folder in Dev**

* In Dev, configure a Kiteworks folder or internal SFTP server that accepts files only from the secure intermediary.
* Apply:

  * AV scanning.
  * Integrity check (hash validation).
  * Access control (only Dev leads can read).

### Step 5: **Monitoring & Alerts**

* Enable logging/auditing in Kiteworks for:

  * File access.
  * User activity.
  * File movement across environments.
* Set up email/SIEM alerts for cross-env file transfers.

---

## ⚙️ **4. Optional Enhancements**

* **Data Tokenization**: Replace sensitive values in the data before exporting from Prod.
* **Approval Workflow**: Use Kiteworks’ approval mechanism before files go to Dev.
* **Encryption at Rest + In Transit**: Ensure TLS + encryption policies are enforced throughout.
* **Immutable Logs**: Forward logs to a secure SIEM or log vault.

---

## ✋ **5. What *Not* to Do**

* ❌ Never give Dev users access to Prod folders.
* ❌ Don’t hardcode credentials for transfer – use vault-managed secrets or SSH keys.
* ❌ Don’t bypass logging/alerting – everything should be auditable.

---

## 📄 Example Policy in Kiteworks

```yaml
Policy:
  - Name: Cross-Env Transfer
    Source: /prod/export/dev-dumps/
    Destination: /dev/inbound/prod-data/
    Allowed Users: [svc-transfer]
    Time Window: "2am-4am UTC"
    Notification: On Transfer Success & Failure
    Retention: 7 days
```

---

## 🚀 Summary

| Element        | Approach                                         |
| -------------- | ------------------------------------------------ |
| Access Control | Use service account, never personal logins       |
| Transfer Path  | Prod Export → Intermediary → Dev Inbound         |
| Logs           | Enable end-to-end audit in Kiteworks             |
| Security       | Encryption, AV scan, and redaction if needed     |
| Automation     | Scheduled or triggered jobs, not manual movement |

Would you like help drafting a sample architecture diagram or shell script to automate this process?



Great — here’s a full solution including a **diagram description**, a **script example**, and a **high-level architecture** you can present or implement.

---

## 🧱 1. **Architecture Diagram Description**

We’ll walk through this verbally first — you can visualize or draw this later (or I can generate a diagram for you too).

### **ENVIRONMENTS**

```
        ┌─────────────┐                ┌────────────┐
        │   PROD MFT  │                │   DEV MFT  │
        │ (Kiteworks) │                │ (Kiteworks)│
        └─────┬───────┘                └─────┬──────┘
              │                                  │
        ┌─────▼─────┐                     ┌──────▼──────┐
        │ Export Dir│                     │  Import Dir │
        │ /export/dev│<────────┐   ┌──────│/import/prod │
        └────────────┘         │   │      └─────────────┘
                               ▼   ▼
                       ┌─────────────────┐
                       │ Intermediary VM │
                       │ (Secure Gateway)│
                       └─────────────────┘
```

**Roles:**

* **Prod MFT:** Hosts an export directory. Only app or automation writes here.
* **Intermediary VM:** Pulls from Prod, pushes to Dev. No users log in. Keys only.
* **Dev MFT:** Only receives — cannot push to Prod. Read-only access by dev team.

---

## ⚙️ 2. **Script for Intermediary File Transfer**

Assuming:

* You use `scp` or `sftp` with SSH keys.
* The intermediary has keys to access both environments.
* You’re transferring files with integrity checks.

```bash
#!/bin/bash

# CONFIG
PROD_HOST="prod-kiteworks.example.com"
DEV_HOST="dev-kiteworks.example.com"
PROD_USER="svc_transfer"
DEV_USER="svc_transfer"
EXPORT_DIR="/export/dev-dumps/"
IMPORT_DIR="/import/prod-files/"
TMP_DIR="/tmp/kiteworks-transfer"
SSH_KEY="/opt/keys/kiteworks_transfer.key"

# STEP 1: Create working dir
mkdir -p "$TMP_DIR"
cd "$TMP_DIR" || exit 1

# STEP 2: Pull files from PROD
scp -i "$SSH_KEY" "${PROD_USER}@${PROD_HOST}:${EXPORT_DIR}*" .

# STEP 3: Verify integrity (basic check — improve with hash if needed)
for file in *; do
  if [[ -f "$file" ]]; then
    echo "Transferring: $file"
    
    # STEP 4: Push to DEV
    scp -i "$SSH_KEY" "$file" "${DEV_USER}@${DEV_HOST}:${IMPORT_DIR}"
    
    if [[ $? -eq 0 ]]; then
      echo "Success: $file"
    else
      echo "FAILED: $file"
    fi
  fi
done

# STEP 5: Clean up
rm -rf "$TMP_DIR"
```

You can make this script run on a **cron schedule** or triggered by an API/event.

---

## 🔐 3. **Security Controls to Enforce**

| Area           | Control                                    |
| -------------- | ------------------------------------------ |
| Authentication | Use SSH keys (rotate every 90 days)        |
| Transfer Host  | Hardened Linux VM with no user login       |
| Logs           | Send to centralized SIEM (Splunk, etc.)    |
| File Retention | Auto-delete after X days                   |
| Permissions    | RO on source, RW on dest, no bidirectional |
| Sanitization   | Use a pre-transfer job in Prod if needed   |

---

## 📄 4. Optional Audit Logging Script

Add this to the script to log each event to a file or syslog:

```bash
LOG_FILE="/var/log/kiteworks-transfer.log"
echo "$(date): Transferred $file from $PROD_HOST to $DEV_HOST" >> "$LOG_FILE"
```

---

## 🧩 Want a Diagram?

I can generate a visual architecture diagram now — would you like it:

* Simple (overview)
* Detailed (with ports, protocols, IP zones)
* Or stylized for presentation?

Let me know your preferred style or format (PNG, SVG, PDF).





You're absolutely right — and great catch.

In the original diagram I described, the **sanitization step was implied**, but **not clearly shown as an explicit component**. Let me fix that for you with a clean, security-aware architecture that **explicitly shows where and how sanitization happens** in a Prod-to-Dev file transfer pipeline using Kiteworks.

---

## ✅ Updated Secure MFT Architecture with Explicit Sanitization

### 🔄 Data Flow with Sanitization Step:

```
    ┌──────────────────────┐
    │     PROD SYSTEMS     │
    └────────┬─────────────┘
             │
             ▼
    ┌──────────────────────┐
    │ Prod Export Job or   │
    │ App Dump Generator   │
    └────────┬─────────────┘
             │
             ▼
    ┌──────────────────────┐
    │  SANITIZATION SCRIPT │   ←── (Bash, Python, ETL, or DLP Preprocessor)
    │  (Redacts PII/PHI)   │
    └────────┬─────────────┘
             │
             ▼
    ┌────────────────────────────┐
    │  PROD KITEWORKS EXPORT DIR │
    │   (e.g. /export/dev)       │
    └────────┬───────────────────┘
             │ (SFTP/SCP)
             ▼
    ┌──────────────────────┐
    │  INTERMEDIARY HOST   │   ← Secure VM in Transfer Zone
    └────────┬─────────────┘
             │
             ▼
    ┌────────────────────────────┐
    │  DEV KITEWORKS IMPORT DIR  │
    │   (e.g. /import/prod-data) │
    └────────────────────────────┘
```

---

## 🛡️ Where Sanitization Happens

### ✅ **Before** the file reaches Kiteworks:

* **This is the ideal and recommended place.**
* Ensures **sensitive data never leaves Prod in raw form.**
* You have **full control** (e.g., masking emails, redacting PII, filtering logs).

---

## 💡 Why Not Inside Kiteworks?

* Kiteworks is designed as a **secure file transfer and compliance platform**, not a content transformation system.
* Sanitizing inside Kiteworks would mean **the sensitive data already left Prod** — violating most compliance standards (e.g., GDPR, HIPAA, ISO 27001 segregation of environments).

---

## 🔧 Example Sanitization Point

If your team exports CSV, JSON, logs, or XML, you can add this job in the export process:

```bash
# sanitize.sh
sed -E 's/[0-9]{3}-[0-9]{2}-[0-9]{4}/[REDACTED_SSN]/g' "$1" \
  | sed -E 's/[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+/\[REDACTED_EMAIL]/g' \
  > /kiteworks/export/dev/$(basename "$1")
```

Then schedule:

```bash
crontab -e
*/15 * * * * /opt/scripts/sanitize.sh /prod/data/dump.csv
```

---

## ✅ Summary: Fix in the Diagram

| Layer                     | Sanitization?                   | Notes |
| ------------------------- | ------------------------------- | ----- |
| App → File Export         | ❌ Raw                           |       |
| **Sanitizer**             | ✅ Yes — must be explicit        |       |
| Kiteworks Prod Export Dir | ✅ Only sanitized files          |       |
| Intermediary VM           | ✅ Trusted channel only          |       |
| Dev Kiteworks             | ✅ No raw sensitive data arrives |       |

---

Would you like me to generate a **diagram image** of this architecture showing all key steps?