---
title: ADP
description: "#### Summary SecureSchool supports NTLM authentication, allowing your users to log in to their Windows domain accounts and automatically inherit the correct SecureSchool filter set. #### Procedure Go to \"Firewall\" -> \"Protocol Rules\" -> \"Add a rule\".  Fill in the…"
url: "https://www.k12usa.com/docs/adp/"
updated: "2025-11-10"
category: SecureSchool
tags:
  - ISBossBox
  - LibraryDoor
  - SecureSchool
---

# ADP

#### Summary

SecureSchool supports NTLM authentication, allowing your users to log in to their Windows domain accounts and automatically inherit the correct SecureSchool filter set.

#### Procedure

Go to "Firewall" -> "Protocol Rules" -> "Add a rule".  Fill in the form with these values:

- Name: "ADP"
- Log Packets: "None"
- Type: "Allow"
- Protocol: "TCP"
- Direction: "From Inside"
- Source Address: "0.0.0.0/0"
- Source Port: Leave blank
- Destination Address: "170.146.0.0/16"
- Destination Port: Leave blank