.. Copyright 2018 AT&T Intellectual Property. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. .. warning:: This repository is being deprecated. Project documentation has moved to the `Airship Docs`_ project, and Airship-in-a-Bottle environment will be merged into the `Airship Treasuremap`_ project. .. _haproxy_security_guide: HAProxy Security Guide ====================== Updated: 13-AUG-2018 This guide covers configurations for HAProxy. Specifically, in ``mode tcp``. .. contents:: :depth: 2 Security Item List ------------------ TCP Mode ^^^^^^^^ The instance will work in pure TCP mode. A full-duplex connection will be established between clients and servers, and no layer 7 examination will be performed. This is the default mode. It should be used for TLS. Max Connections ^^^^^^^^^^^^^^^ Set ``maxconn`` in ``global`` to a reasonable level. HAProxy will queue requests beyond that value. Set Headers ^^^^^^^^^^^ "set-header" does the same as "add-header" except that the header name is first removed if it existed. This is useful when passing security information to the server, where the header must not be manipulated by external users. Note that the new value is computed before the removal so it is possible to concatenate a value to an existing header. References ---------- `HAProxy Configuration Guide `_ .. _Airship Docs: https://airship-docs.readthedocs.org .. _Airship Treasuremap: https://opendev.org/airship/treasuremap/