---
title: "_pro release 4.12.18"
slug: "pro-release-4-12-18"
status: "new"
updated: 2026-10-21T07:57:25Z
published: 2026-10-21T07:57:25Z
canonical: "docs.lobstersoftware.com/pro-release-4-12-18"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lobstersoftware.com/llms.txt
> Use this file to discover all available pages before exploring further.

# _pro release 4.12.18

## Release notes - Lobster _pro 4.12.18

Release date: 2026-10-21

### Bug fixes

#### LDP-9226

ACME/Certbot validation now works on Lobster _pro DMZ instances with `enableTransportGuarantee` enabled. Previously, validation could fail in this configuration.

A client integrated into the Lobster Data Platform for the automatic issuance and renewal of TLS certificates via Let's Encrypt. Certbot uses the ACME protocol and runs directly on the Integration Server.

An optional security layer between the internet and the Integration Server. The DMZ receives incoming traffic, forwards it in a controlled manner, and protects the internal system from direct external access. When the Integration Server restarts, it buffers incoming requests.