SASE Framework Agile Scrum Kanban

SASE Framework Agile

SASE Secure Access Service Edge SD-WAN CASB SWG ZTNA FWaaS Zero Trust Agile Scrum Kanban Sprint Backlog WIP Limit Board Network Security Cloud Edge

SASE Implementation

# === SASE Architecture & Configuration ===

# Cloudflare Zero Trust Setup
# cloudflared tunnel create sase-tunnel
# cloudflared tunnel route dns sase-tunnel internal.example.com
#
# # config.yml
# tunnel: sase-tunnel-id
# credentials-file: /etc/cloudflared/credentials.json
# ingress:
#   - hostname: internal.example.com
#     service: http://localhost:8080
#   - hostname: api.example.com
#     service: http://localhost:3000
#   - service: http_status:404

# Zero Trust Policy (Terraform)
# resource "cloudflare_access_policy" "internal_app" {
#   application_id = cloudflare_access_application.app.id
#   zone_id        = var.zone_id
#   name           = "Allow Internal Users"
#   precedence     = 1
#   decision       = "allow"
#
#   include {
#     email_domain = ["example.com"]
#     group        = [cloudflare_access_group.engineers.id]
#   }
#
#   require {
#     device_posture = [cloudflare_device_posture_rule.corp_device.id]
#   }
# }

from dataclasses import dataclass
from typing import List

@dataclass
class SASEComponent:
    name: str
    category: str
    status: str
    coverage: str
    vendor: str

components = [
    SASEComponent("SD-WAN", "Network", "Deployed", "100%", "Cisco Viptela"),
    SASEComponent("ZTNA", "Access", "Deployed", "85%", "Cloudflare Access"),
    SASEComponent("CASB", "Cloud Security", "In Progress", "60%", "Netskope"),
    SASEComponent("SWG", "Web Security", "Deployed", "95%", "Zscaler"),
    SASEComponent("FWaaS", "Firewall", "Planning", "0%", "Palo Alto"),
    SASEComponent("DLP", "Data Protection", "In Progress", "40%", "Netskope"),
]

print("=== SASE Implementation Status ===")
for c in components:
    print(f"  [{c.status}] {c.name} ({c.category})")
    print(f"    Vendor: {c.vendor} | Coverage: {c.coverage}")

Agile Scrum Sprint Planning

# === Scrum for SASE Project ===

# Sprint Planning
# Product Backlog:
# 1. [HIGH] Deploy SD-WAN to all branches (13 pts)
# 2. [HIGH] Configure ZTNA policies (8 pts)
# 3. [HIGH] Setup CASB for SaaS apps (8 pts)
# 4. [MED]  Deploy SWG with URL filtering (5 pts)
# 5. [MED]  Configure DLP policies (5 pts)
# 6. [LOW]  Setup monitoring dashboard (3 pts)
# 7. [LOW]  Documentation (2 pts)

# Sprint Velocity: 25 points per sprint
# Sprint Duration: 2 weeks

@dataclass
class SprintItem:
    id: str
    title: str
    points: int
    priority: str
    status: str
    sprint: int

backlog = [
    SprintItem("S1-1", "SD-WAN Branch 1-5", 8, "High", "Done", 1),
    SprintItem("S1-2", "ZTNA Policy Design", 5, "High", "Done", 1),
    SprintItem("S1-3", "SWG Basic Setup", 5, "Med", "Done", 1),
    SprintItem("S1-4", "Monitoring Setup", 3, "Low", "Done", 1),
    SprintItem("S2-1", "SD-WAN Branch 6-10", 8, "High", "In Progress", 2),
    SprintItem("S2-2", "ZTNA Deploy Phase 1", 8, "High", "In Progress", 2),
    SprintItem("S2-3", "CASB Discovery", 5, "High", "To Do", 2),
    SprintItem("S3-1", "CASB Policy Deploy", 8, "High", "Backlog", 3),
    SprintItem("S3-2", "DLP Configuration", 5, "Med", "Backlog", 3),
]

print("\n=== Sprint Board ===")
for sprint_num in [1, 2, 3]:
    items = [i for i in backlog if i.sprint == sprint_num]
    total_pts = sum(i.points for i in items)
    print(f"\n  Sprint {sprint_num} ({total_pts} pts):")
    for i in items:
        print(f"    [{i.status}] {i.id}: {i.title} ({i.points} pts)")

Kanban Board

# === Kanban for Security Operations ===

# Kanban Board Columns:
# Backlog | To Do | In Progress (WIP: 3) | Review | Done

# WIP Limits prevent overload
# Cycle Time = time from To Do to Done
# Lead Time = time from Backlog to Done

@dataclass
class KanbanCard:
    title: str
    column: str
    assignee: str
    priority: str
    age_days: int

cards = [
    KanbanCard("Investigate Alert #452", "Done", "Alice", "High", 1),
    KanbanCard("Update Firewall Rules", "Review", "Bob", "Med", 2),
    KanbanCard("CASB Policy for Slack", "In Progress", "Charlie", "High", 1),
    KanbanCard("VPN Certificate Renewal", "In Progress", "Alice", "High", 0),
    KanbanCard("Patch CVE-2024-1234", "In Progress", "Bob", "Critical", 0),
    KanbanCard("DLP Rule for PII", "To Do", "—", "Med", 3),
    KanbanCard("Access Review Q1", "To Do", "—", "Low", 5),
    KanbanCard("SIEM Dashboard Update", "Backlog", "—", "Low", 10),
]

columns = ["Backlog", "To Do", "In Progress", "Review", "Done"]
wip_limits = {"In Progress": 3, "Review": 2}

print("Kanban Board:")
for col in columns:
    col_cards = [c for c in cards if c.column == col]
    wip = f" (WIP: {wip_limits[col]})" if col in wip_limits else ""
    print(f"\n  [{col}{wip}] — {len(col_cards)} cards")
    for c in col_cards:
        print(f"    [{c.priority}] {c.title} ({c.assignee}, {c.age_days}d)")

# Metrics
metrics = {
    "Avg Cycle Time": "1.5 days",
    "Avg Lead Time": "3.2 days",
    "Throughput": "8 cards/week",
    "WIP Violations": "1 this week",
    "Blocked Items": "0",
}

print(f"\n\nMetrics:")
for k, v in metrics.items():
    print(f"  {k}: {v}")

เคล็ดลับ

• SASE: เริ่มจาก SD-WAN + ZTNA ก่อน ค่อยเพิ่ม CASB SWG
• Sprint: ใช้ Sprint 2 สัปดาห์ สำหรับ SASE Implementation
• Kanban: ใช้ Kanban สำหรับ Security Operations ทำงานต่อเนื่อง
• WIP: จำกัด WIP 3 งาน ป้องกัน Multitasking
• Retro: Sprint Retrospective ทุก 2 สัปดาห์ ปรับปรุง Security

การนำไปใช้งานจริงในองค์กร

สำหรับองค์กรขนาดกลางถึงใหญ่ แนะนำให้ใช้หลัก Three-Tier Architecture คือ Core Layer ที่เป็นแกนกลางของระบบ Distribution Layer ที่ทำหน้าที่กระจาย Traffic และ Access Layer ที่เชื่อมต่อกับผู้ใช้โดยตรง การแบ่ง Layer ชัดเจนช่วยให้การ Troubleshoot ง่ายขึ้นและสามารถ Scale ระบบได้ตามความต้องการ

เรื่อง Network Security ก็สำคัญไม่แพ้กัน ควรติดตั้ง Next-Generation Firewall ที่สามารถ Deep Packet Inspection ได้ ใช้ Network Segmentation แยก VLAN สำหรับแต่ละแผนก ติดตั้ง IDS/IPS เพื่อตรวจจับการโจมตี และทำ Regular Security Audit อย่างน้อยปีละ 2 ครั้ง

สรุป

SASE Framework SD-WAN CASB SWG ZTNA FWaaS Zero Trust Cloud Edge Agile Scrum Sprint Kanban WIP Limit Board Velocity Cycle Time Lead Time Security Operations