---
title: "gdmf.apple.com: what it is and what breaks if you block it · Kilobat"
url: "https://kilobat.app/hosts/gdmf-apple-com"
description: "gdmf.apple.com hosts Apple's software update catalog and tells device management which updates exist. What it does, and what breaks if you block it."
---

Updates and downloads

# gdmf.apple.com

`gdmf.apple.com` is an Apple host for the software update catalog. Device management services use it to find which updates are available. `gdmf-ados.apple.com` does the same for additional components.

Run by Apple · Ports: 443 TCP · Checked: 1 November 2026

## Short answer

Apple's software update catalog host. Device management services also ask it which updates are available.

Don’t block

Don't block it. Software Update and device management can't see which updates exist.

Matches

`gdmf.apple.com` `gdmf-ados.apple.com`

A name with `*.` covers every name under it: `*.push.apple.com` matches `1-courier.push.apple.com`.

## What it serves

Apple's enterprise host list names `gdmf.apple.com` in its Software updates section, as the “Software update catalog”, for iOS, iPadOS, tvOS, watchOS and macOS.

In its Device management section, Apple says that management services use it to find which software updates are available to managed devices.

`gdmf-ados.apple.com` is listed as the “Software update catalog for additional components”, for iOS, iPadOS and macOS, and it supports proxies.

## Processes that use it

- [softwareupdated](https://kilobat.app/processes/softwareupdated): Part of macOS. It checks for and downloads macOS updates, security responses and system files.

## What breaks if you block it

Don’t block

Don't block it. Software Update and device management can't see which updates exist.

What breaks if you block it

- macOS may not find software updates.
- On a managed Mac, the management service may not see or enforce updates.
- Updates for additional components may not be found.

With Kilobat Pro and the network filter, you can block a host for every app or for one app: in Connections, select a connection and choose Block. Apple’s own services are never blocked by Kilobat’s [Protection](https://kilobat.app/docs/blocking#protection) lists.

## Notes

To delay updates on a hotspot, turn off automatic downloads in Software Update. Blocking the catalog stops all updates.

## Apple’s rules for its hosts

Apple’s list, [Use Apple products on enterprise networks](https://support.apple.com/en-us/101555), says that devices open these connections, not Apple’s servers. Apple services fail any connection that uses HTTPS interception, so a proxy that inspects TLS should leave Apple’s hosts alone.

If a firewall allows hosts by name, allowing `*.apple.com` covers most Apple services, Apple says. A firewall that works only with addresses can allow `17.0.0.0/8` for IPv4, and `2403:300::/32`, `2620:149::/32` and `2a01:b740::/32` for IPv6.

To see which app on your Mac opened a connection to this host, use Kilobat’s Connections tab, or the [agent network log](https://kilobat.app/docs/agents#agent-network-log) for AI agents.

## Sources

- [Apple Support: Use Apple products on enterprise networks](https://support.apple.com/en-us/101555)

Checked on 1 November 2026.

## Related

- [mesu.apple.com](https://kilobat.app/hosts/mesu-apple-com): Apple's host for software update catalogs, the lists of updates that devices check against.
- [gs.apple.com](https://kilobat.app/hosts/gs-apple-com): An Apple host that devices need during setup and for operating system updates. Apple lists it in both sections of its host list.