implementing-conduit-security-for-ot-remote-access

Implement secure conduit architecture for OT remote access following IEC 62443 zones and conduits model, deploying jump servers, MFA-enabled gateways, session recording, and approval-based workflows to control vendor and engineer access to industrial control systems without exposing OT networks directly.

Jump to install

Repository: AgentFlocks/flocks
Last source activity: May 5, 2026 at 05:45
Detected SKILL.md language: English
Stars: 445
Forks: 83

Install options

The review-first prompt is selected by default. You can switch to a direct command or download a local copy.

Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.

A direct command skips the review prompt. Inspect the source before running it.

npx skills add https://github.com/AgentFlocks/flocks --skill implementing-conduit-security-for-ot-remote-access

The command stays on one line. Scroll horizontally to inspect it before copying.

Prefer a local copy? Download the files currently available to SkillsMP.

Review the source files

Read SKILL.md and any companion files shown by SkillsMP before deciding whether to install.

File Explorer

5 files

SKILL.md

Source instructions · Read-only preview

Back to search Back to installation

sangfor-edr-use

深信服 EDR 登录态管理、首页仪表盘、威胁资产分析和资产清点分类统计 API 采集。用户提到深信服 EDR、EDR、资产清点或 sangfor EDR 时必须先加载本 skill。

2026-08-11

browser-use

统一处理浏览器使用任务，支持可见浏览器 CDP 直连、专用 headless CDP、agent-browser。Use when the user asks to browse websites, interact with pages, fill forms, capture screenshots, reuse an existing Chrome/Chromium/Edge login session, work with an already-open browser/sidebar browser, access login-only/internal/dynamic pages, or automate browser actions.

2026-08-07

onesec-use

用于处理 OneSEC/OneDNS 终端安全平台相关任务，支持通过API或者结合浏览器进行操作。只要用户提到 OneSEC、微步 EDR等相关操纵需求时，必须先加载本 skill。本 skill 是 OneSEC 平台操作的唯一决策入口：在未阅读本 skill 并完成模式判断前，不要直接调用任何 `onesec_*` tool。

2026-08-07

View all from this repository

Implementing Conduit Security for OT Remote Access

When to Use

When replacing direct VPN connections from IT or vendors into OT control networks

When implementing IEC 62443-compliant conduit architecture for remote access paths

When deploying secure remote access for third-party vendor maintenance of ICS equipment

When building approval-based access workflows for privileged OT system access

When remediating audit findings about uncontrolled remote access to SCADA systems

Do not use for designing the overall Purdue Model segmentation (see implementing-purdue-model-network-segmentation), for deploying IT-only remote access solutions, or for configuring local console access to PLCs.

Prerequisites

IT/OT DMZ (Level 3.5) deployed with dual-firewall architecture

Jump server or privileged access management (PAM) platform (CyberArk, BeyondTrust)

Multi-factor authentication (MFA) infrastructure for OT remote access users

Session recording capability for compliance and forensic purposes

Approval workflow system (ServiceNow, ticketing) for access requests

Workflow

Step 1: Design Conduit Architecture for Remote Access

# IEC 62443 Conduit Security Architecture for OT Remote Access # All remote access terminates in DMZ - never passes through to OT directly conduit_architecture: remote_access_conduit: conduit_id: "RA-001" source_zone: "Enterprise IT (Level 4)" destination_zone: "OT DMZ (Level 3.5)" security_level_target: "SL3" components: external_gateway: type: "VPN Concentrator" location: "Enterprise DMZ" ip: "10.200.1.10" protocols: ["IPsec", "SSL-VPN"] authentication:

Implementing Conduit Security for OT Remote Access

When to Use

When replacing direct VPN connections from IT or vendors into OT control networks

When implementing IEC 62443-compliant conduit architecture for remote access paths

When deploying secure remote access for third-party vendor maintenance of ICS equipment

When building approval-based access workflows for privileged OT system access

When remediating audit findings about uncontrolled remote access to SCADA systems

Prerequisites

IT/OT DMZ (Level 3.5) deployed with dual-firewall architecture

Jump server or privileged access management (PAM) platform (CyberArk, BeyondTrust)

Multi-factor authentication (MFA) infrastructure for OT remote access users

Session recording capability for compliance and forensic purposes

Approval workflow system (ServiceNow, ticketing) for access requests

Workflow

Step 1: Design Conduit Architecture for Remote Access

#!/usr/bin/env python3 """OT Remote Access Conduit Manager. Manages approval-based remote access to OT systems through secure conduit architecture with session recording, MFA enforcement, and time-limited access windows. """ import json import sys from datetime import datetime, timedelta from typing import Dict, List, Optional from enum import Enum class AccessRequestStatus(Enum): PENDING = "pending" APPROVED = "approved" REJECTED = "rejected" ACTIVE = "active" EXPIRED = "expired" REVOKED = "revoked" class RemoteAccessRequest: """Represents an OT remote access request.""" def __init__(self, requestor: str, requestor_type: str, purpose: str, target_systems: List[str], duration_hours: int, requested_start: str): self.id = f"OT-RA-{datetime.now().strftime('%Y%m%d-%H%M%S')}" self.requestor = requestor self.requestor_type = requestor_type # "internal_engineer" or "vendor" self.purpose = purpose self.target_systems = target_systems self.duration_hours = duration_hours self.requested_start = requested_start self.status = AccessRequestStatus.PENDING self.created = datetime.now().isoformat() self.approved_by = None self.session_id = None self.audit_trail = [] def approve(self, approver: str, conditions: str = ""): """Approve the access request.""" self.status = AccessRequestStatus.APPROVED self.approved_by = approver self.audit_trail.append({ "timestamp": datetime.now().isoformat(), "action": "APPROVED", "actor": approver, "conditions": conditions, }) def reject(self, rejector: str, reason: str): """Reject the access request.""" self.status = AccessRequestStatus.REJECTED self.audit_trail.append({ "timestamp": datetime.now().isoformat(), "action": "REJECTED", "actor": rejector, "reason": reason, }) class OTConduitManager: """Manages OT remote access conduit security.""" def __init__(self): self.access_requests: Dict[str, RemoteAccessRequest] = {} self.active_sessions: Dict[str, dict] = {} self.policy = self._load_policy() def _load_policy(self) -> dict: """Load remote access policy.""" return { "max_session_hours": 4, "idle_timeout_minutes": 15, "mfa_required": True, "session_recording": True, "clipboard_transfer": False, "file_transfer": "scan_required", "advance_notice_hours": 24, "vendor_escort_required": True, "prohibited_targets": ["SIS-*", "SAFETY-*"], "allowed_protocols": ["RDP", "SSH", "VNC"], "blocked_protocols": ["Telnet", "FTP", "SMB"], } def submit_request(self, request: RemoteAccessRequest) -> str: """Submit a new remote access request.""" # Validate against policy violations = [] if request.duration_hours > self.policy["max_session_hours"]: violations.append( f"Duration {request.duration_hours}h exceeds maximum {self.policy['max_session_hours']}h" ) for target in request.target_systems: for prohibited in self.policy["prohibited_targets"]: pattern = prohibited.replace("*", "") if target.startswith(pattern): violations.append(f"Target {target} is in prohibited list (safety systems)") if violations: print(f"[!] Policy violations found:") for v in violations: print(f" - {v}") return "" self.access_requests[request.id] = request print(f"[+] Access request {request.id} submitted for approval") return request.id def list_pending_requests(self): """List all pending access requests for approval.""" pending = [r for r in self.access_requests.values() if r.status == AccessRequestStatus.PENDING] print(f"\n{'='*65}") print("PENDING OT REMOTE ACCESS REQUESTS") print(f"{'='*65}") if not pending: print(" No pending requests") return for req in pending: print(f"\n Request: {req.id}") print(f" Requestor: {req.requestor} ({req.requestor_type})") print(f" Purpose: {req.purpose}") print(f" Targets: {', '.join(req.target_systems)}") print(f" Duration: {req.duration_hours} hours") print(f" Start: {req.requested_start}") print(f" Submitted: {req.created}") def generate_audit_report(self): """Generate audit report of all remote access activity.""" print(f"\n{'='*65}") print("OT REMOTE ACCESS AUDIT REPORT") print(f"{'='*65}") print(f"Report Date: {datetime.now().isoformat()}") print(f"Total Requests: {len(self.access_requests)}") status_counts = {} for req in self.access_requests.values(): status = req.status.value status_counts[status] = status_counts.get(status, 0) + 1 print(f"\nRequest Status:") for status, count in status_counts.items(): print(f" {status}: {count}") print(f"\nDetailed Audit Trail:") for req in self.access_requests.values(): print(f"\n {req.id} - {req.requestor} ({req.requestor_type})") print(f" Status: {req.status.value}") print(f" Targets: {', '.join(req.target_systems)}") for entry in req.audit_trail: print(f" [{entry['timestamp']}] {entry['action']} by {entry['actor']}") if __name__ == "__main__": manager = OTConduitManager() # Vendor access request vendor_req = RemoteAccessRequest( requestor="John Smith - Siemens Field Service", requestor_type="vendor", purpose="Annual PLC firmware update for S7-1500 controllers", target_systems=["PLC-REACTOR-01", "PLC-REACTOR-02"], duration_hours=3, requested_start="2025-03-15T08:00:00", ) req_id = manager.submit_request(vendor_req) if req_id: manager.list_pending_requests() # Simulate approval manager.access_requests[req_id].approve( approver="Plant Manager - Jane Doe", conditions="OT engineer must shadow the vendor session", ) manager.generate_audit_report()

name	implementing-conduit-security-for-ot-remote-access
description	Implement secure conduit architecture for OT remote access following IEC 62443 zones and conduits model, deploying jump servers, MFA-enabled gateways, session recording, and approval-based workflows to control vendor and engineer access to industrial control systems without exposing OT networks directly.
domain	cybersecurity
subdomain	ot-ics-security
tags	["ot-security","ics","remote-access","iec62443","jump-server","zero-trust","conduit","mfa"]
version	1.0
author	mahipal
license	Apache-2.0
nist_csf	["PR.IR-01","DE.CM-01","ID.AM-05","GV.OC-02"]

name	implementing-conduit-security-for-ot-remote-access
description	Implement secure conduit architecture for OT remote access following IEC 62443 zones and conduits model, deploying jump servers, MFA-enabled gateways, session recording, and approval-based workflows to control vendor and engineer access to industrial control systems without exposing OT networks directly.
domain	cybersecurity
subdomain	ot-ics-security
tags	["ot-security","ics","remote-access","iec62443","jump-server","zero-trust","conduit","mfa"]
version	1.0
author	mahipal
license	Apache-2.0
nist_csf	["PR.IR-01","DE.CM-01","ID.AM-05","GV.OC-02"]

Term	Definition
Conduit	IEC 62443 controlled communication path between security zones with defined security policies
Jump Server	Hardened intermediary server in the DMZ through which all remote OT access must transit
Session Recording	Capture of all screen activity, keystrokes, and commands during a remote access session for audit
Approval-Based Access	Workflow requiring plant operations manager authorization before remote access credentials are activated
Vendor Escort	Practice of having an internal OT engineer monitor vendor remote sessions in real time
Break-Glass Access	Emergency access procedure bypassing normal approval workflow for critical situations

implementing-conduit-security-for-ot-remote-access

Install options

Review the source files