# \[v0.9.18\] Introducer Nodes

**URL:** https://forum.syncthing.net/t/v0-9-18-introducer-nodes/974
**Category:** Announce
**Created:** [September 21, 2014, 5:47pm UTC](https://forum.syncthing.net/t/v0-9-18-introducer-nodes/974 "2014-09-21T17:47:23Z")
**Posts on this page:** 1
**Showing post:** 6

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### Author: ![NickPyz](https://forum.syncthing.net/user_avatar/forum.syncthing.net/nickpyz/32/4025_2.png) [@NickPyz](https://forum.syncthing.net/u/NickPyz)
#### Post date: [September 25, 2014, 9:02pm UTC](https://forum.syncthing.net/t/v0-9-18-introducer-nodes/974/6 "2014-09-25T21:02:41Z")

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Not sure I understand how to use this. To illustrate, I created a diagram for a hypothetical case:

![](https://forum.syncthing.net/uploads/default/417/4391fc3561858d3c.jpg)

(a) I have an existing simple cluster sharing one repo - Node 1 and Node 2. Both are trusted and I can configure them. I want to add trusted Node 3, and mesh it with Node 1 and Node 2.

(b) I want to add untrusted Node 4 and also Node 5. I do not own these nodes. I can’t edit or configure them as they are operated by other people.

© I want Node 3 to see **ONLY** Nodes 1 and 2. And Node 2 to **ONLY** see Nodes 1 and 3.

(d) I want Nodes 4 and 5 to **ONLY** see Node 1, and not see each other.

Pretty sure I can set this up manually, but how is this configured using the Introducer option?

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