Data Control and DLP
Endpoint Security and Control
Sophos UTM 9
Amazon Web Services (AWS)
Definitions & Users
Logging & Reporting
Other Astaro/Sophos Products
Tweets by SophosSupport
Sophos UTM: Certificate validation failed for sites signed by Sectigo root CA
Created: 2 Jun 2020
The issue occurs because OpenSSL checks the certificate chain path which leads to an expired 'AddTrust External CA'.
Sophos UTM: HTTPS Scanning CA Install
Created: 27 Aug 2018
This article explains how to install the UTM's Certificate Authority (CA) on Microsoft Windows.
Sophos UTM: Advanced Deployment - High-Performance Scenarios Configuration
Created: 11 Jul 2018
This article describes the steps to deploy a Sophos UTM in high-performance environments/scenarios to maximize throughput and is designed for high-end appliances, although most of the operations can be performed on mid-end ones.
Sophos UTM: How to change the outgoing interface for Web Filtering
Created: 2 Jun 2017
This article explains how to enable a GUI option that can change which external interface traffic from the Web Filter use.
Sophos UTM: How to add Sophos Central domains
Created: 20 Oct 2016
This article shows you how to add Sophos Central domains on UTM to allow endpoints to communicate with Sophos.
How to control YouTube videos through the UTM
Created: 22 Jun 2016
How to control YouTube videos after the YouTube for Schools on 01-July-2016
Sophos UTM: Use of HTTPS Decrypt and Scan
Created: 27 Nov 2015
An overview of Asymmetric and Symmetric Key Encryption, Public Key Infrastructure and SSL connections used in the UTM
UTM Block Messages for Web Requests
Created: 21 May 2015
What to do if you receive a blocked message from the Sophos UTM
Sophos UTM: Netflix iOS app does not work when the WebProxy is in transparent mode
Created: 12 Nov 2014
This article explains the workaround for the Netflix app not working on iOS when using the WebProxy in transparent mode.
Sophos UTM: Enforcing Safe Search with Web Protection
Created: 27 Jun 2014
This article explains how to properly enforce Google Yahoo, and Bing Safe Search using UTM Web Protection.