Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.

  • Sophos Firewall: How to protect against TearDrop/LAND/WinNuke/Smurf attacks

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview Smurf Teardrop LAND and…

  • Sophos Firewall: What action MTA will perform on specific SPF results?

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview What to do Overview …

  • Sophos Firewall: [RED] A split network may never be in the same network as the uplink on the RED side.

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Content Overview: Scenario: What are the options…

  • Sophos Firewall: How to determine the base image version of the Sophos Firewall deployment in Azure and list the versions currently available on the Azure marketplace

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Overview Occasionally, you may be required to manually replicate…

  • Sophos Firewall : Application filter recommended settings for better application detection

    Disclaimer: This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview CLI settings IPS-Settings…

  • Sophos Firewall: Explanation why Zero-day Protection log entries are shown in Log Viewer without a Zero-day Protection license

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview Explanation Overview…

  • Sophos Firewall: Heartbeat service is not started after a fail over

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Hi Community, After restoring the backup on the HA enabled appliance…

  • Sophos Firewall: Configure Route-based VPN (RBVPN) between Sophos Firewall and Google Cloud Platform (GCP)

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. ______________________________________________________________________________________________________________________________________…

  • Sophos Firewall: Troubleshooting Guide - Email Notification not working

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    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table Of Contents Overview: Prerequisites: What To Do…

  • Sophos Firewall: Unable to access Webadmin and User Portal externally

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    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview: Scenario: Step 1: Verify…

  • Sophos Firewall: Troubleshoot a broken application in SFOS

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview Invalid Traffic Troubleshooting…

  • Sophos Firewall: How to submit an RMA case and setup the replacement firewall

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Overview This Recommended Read describes how to identify and…

  • Sophos Firewall: SSL VPN – Certificate Verification Failed

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Note: Make sure your Sophos Firewall time is correct to avoid potential…

  • Sophos Firewall: Understanding “top” and “atop” command in Sophos Firewall/UTM

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table Of Contents: Overview: Scenario Understanding …

  • Sophos Firewall: SSL VPN "IPv4 lease range" changes OR global settings update gives error "You must enter a network IP address." in SFOS v19.

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview What is the change in SFOS…

  • Sophos Firewall: SATC with Sophos Server Protection Step by Step Guide

    Disclaimer: This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. ______________________________________________________________________________________________________________________________________…

  • Sophos Firewall: Using Firewall "Rule Groups"

    Disclaimer: This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Applies to: Configuration: Steps: …

  • Sophos Firewall: Heartbeat stops showing any endpoint clients on GUI

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. ______________________________________________________________________________________________________________________________________…

  • Sophos Firewall: License Sync Failed

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview Scenario What to do …

  • Sophos Firewall: ISP Gateway Fluctuation

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview: Scenario: Required information…

  • Sophos Firewall: Steps to convert Sophos Firewall from PAYG to BYOL on Azure

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview Configuration Step 1: Take…

  • Sophos Firewall: How to Identify the communication issue with up and running IPSec tunnel

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. ______________________________________________________________________________________________________________________________________…

  • Sophos Firewall: Uninstall the SSL CA certificate

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview Untrusting & Uninstalling…

  • Sophos Firewall: Configure an L2TP connection for Windows

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. ______________________________________________________________________________________________________________________________________…

  • Sophos Firewall: Establish IPsec connection between Sophos Firewall and Check Point

    Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview Prerequisites Configuration…
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