How to Add and Manage Egress Firewall Rules

Egress firewall rules control outbound traffic from your site to external networks. By default, Pressable restricts outbound traffic for security reasons. The firewall rules allow you to define which external IP addresses, domains, or ports your site is allowed to connect to.

This is especially important for —

• Improving security by limiting which external systems your site can access.
• Controlling data flow and preventing unwanted or risky connections
• Allowing specific services (like external APIs or payment gateways) that your site depends on

Users who have performance management permissions can create, delete, and refresh egress firewall rules directly from the site’s settings page.

Outbound Traffic Defaults

Pressable pre‑allows outbound traffic only on the following commonly used ports:

• SMTP: TCP 465, 587
• POP3: TCP 110, 995
• IMAP: TCP 143, 993
• HTTP/HTTPS: TCP 80, 443

All other outbound traffic is rejected and logged by default. If your site needs to connect to a service using a non-standard port (e.g., TCP 9000 or a private API), you must add a rule to allow it — otherwise, the connection will fail.

Adding and Managing the Egress Firewall Rules

To access and manage egress firewall rules, navigate to the site where you want to manage egress firewall rules. In the left-hand menu, click on Security. You will now see the Egress Firewall Rules management view.

Creating a New Egress Firewall Rule

1. In the Security tab, scroll to the Egress Firewall Rules section
2. Click Create Rule
3. Fill out the form fields to define your new rule
4. Click the Create button

Your new rule will appear in the list below the form.

Deleting an Existing Rule

1. Find the rule you want to remove in the list at the bottom of the Security view
2. Click the Delete button next to the rule

The rule will be removed from your site’s firewall settings and you will see a confirmation pop-up in the top right corner.

Refreshing the Rules List

If you suspect rules may have been updated outside the current session or by another user, click the Refresh Rules button at the bottom of the page. The list will update to reflect the most recent set of rules applied to the site.

Activity Logging

Every time a rule is created, deleted, or refreshed, the action is recorded in the Site Activity Log.

You can use the filter to set Action = Firewall Rule to narrow logs down to only actions related to egress rules.

This includes actions made by both customers and administrators.