---
title: Unblocking the Caimber Testing Site
description: "#### Summary Some schools need to reach the Caimber testing site. If access is blocked, add two hostnames to your allow list so the site and its file uploads work correctly. #### Domains to Allow Add **both** of the following…"
url: "https://www.k12usa.com/docs/unblocking-the-caimber-testing-site/"
updated: "2025-12-02"
category: SecureSchool
tags:
  - ISBossBox
  - LibraryDoor
  - SecureSchool
---

# Unblocking the Caimber Testing Site

#### Summary

Some schools need to reach the Caimber testing site. If access is blocked, add two hostnames to your allow list so the site and its file uploads work correctly.

#### Domains to Allow

Add **both** of the following entries:

- caimber.com
- caimber-incoming.s3.us-west-2.amazonaws.com

Why two?
 caimber.com serves the main site; caimber-incoming...amazonaws.com is an S3 endpoint Caimber uses (e.g., for uploads/attachments).

#### Steps (SecureSchool)

1. Log in to the **SecureSchool Administrator** interface.
2. Go to **Website Filtering → Website Access.**
3. In **Add a Site,** create the first entry:
   - **Site/Domain:** caimber.com
   - **Action: Allow**
   - *(Optional)* **Applies To:** choose **All Users** or select the specific Group(s) that need access
   - **Notes:** Caimber testing – main domain
   - Click **Save.**
4. Repeat step 3 for:
   - **Site/Domain:** caimber-incoming.s3.us-west-2.amazonaws.com
   - **Action:** Allow
   - **Notes:** Caimber testing – S3 endpoint
5. Navigate to **Commit/Restart,** select **Services,** and apply the changes.

#### Validate

- From a student or test device, visit [https://caimber.com/](https://caimber.com/) and perform a sample action that previously failed (e.g., sign-in or upload).
- Confirm pages load without block pages or timeouts.

#### Notes & Best Practices

- Be precise: Add the exact hostnames above—no wildcard is needed.

#### Troubleshooting

- Still blocked? Check **Logs & Reports → Web Logs** for any additional blocked hostnames related to Caimber and allow as needed.
- If issues persist after allowing both domains and committing, contact **K12USA Support** with the time of the test and the user/group involved.