# Link Filter

{% hint style="info" %}
**Available on all tiers** — Free tier: 10 filtered actions per day, 20 allowlisted domains. Premium: unlimited. [Compare plans →](https://securitybot.gitbook.io/securitybot-knowledge-hub/plans-and-pricing/plans-and-pricing)
{% endhint %}

SecurityBot’s Link Filter automatically removes any message containing a link to a domain that hasn’t been explicitly approved. This helps prevent users from sharing phishing sites, scam promotions, or links to untrusted content.

***

### How to Manage Allowed Domains

### Enable or disable domain filtering

You can toggle the filter using:

```
/settings block_links
```

* When **enabled**, any link not on your allowlist will be automatically deleted.
* When **disabled**, users can post links freely, unless blocked by another filter.

This command also shows:

* Whether link filtering is currently active
* The total number of domains currently allowed (your **domain whitelist size**)
* An option to **Allow Default Links**, which automatically whitelists common trusted domains used across the ecosystem (e.g., X, CardanoScan and other common DAPP's and tools)

{% hint style="info" %}
Use the **"Allow Default Links"** button if you want to quickly pre-approve frequently used safe domains.
{% endhint %}

### Allow a trusted domain

To let users post links to a specific domain:

```
/allow_domain [domain]
```

Example:

```
/allow_domain securitybot.info
```

This allows any URL from that domain, such as:

* `https://securitybot.info/checkout`
* `https://securitybot.info/search`

This command adds the domain to your allowlist. Once approved, users can share links that include this domain without being flagged or removed.

{% hint style="info" %}
**Subdomains are not included.**\
For example, allowing `securitybot.info` will **not** allow `docs.securitybot.info`. You must allow each subdomain explicitly if needed.
{% endhint %}

***

### Remove a domain from the allowlist

If you no longer trust a domain or it’s no longer relevant:

```
/remove_domain [domain]
```

Example:

```
/remove_domain securitybot.info
```

Any future links to this domain will be blocked if the filter is active.

***

### View all allowed domains

To check what domains are currently permitted:

```
/chat_filters domain view
```

Select **"Allowed Domains"** from the list to see a full embed of all domains in your allowlist.

***

### Best Practices

* Only allow domains you trust and expect your members to use
* Add any project-related services (e.g., `ipfs.io`, `jpg.store`, `yourproject.xyz`)
* Use `/chat_filters domain view` regularly to audit your allowlist
* Combine with a logging channel to track flagged attempts

{% hint style="info" %}
Only admins or users with Discord’s Administrator permission can manage domain filtering.
{% endhint %}

***

Next up: Learn how to restrict Discord invites with [Discord Invite Filter](https://securitybot.gitbook.io/securitybot-knowledge-hub/bot-guide/chat-filters/discord-invite-filter).