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Sophos XG update v18.0 GA – build 339 released

Sophos has released version 18.0 GA build 339 for Sophos Firewall OS (SFOS). You can download the new firmware immediately from the MySophos portal .

We have already presented all the new features in detail in a separate article: Sophos SFOS v18: overview of new features

This update is for those who want to upgrade from version 17.5 MR10 to v18.0 GA-Build339.

Enable/disable SSL/TLS

The new build provides the ability to independently enable/disable SSL/TLS inspection rules via a new switch. This small but nice switch is for customers upgrading from SFOS version 17.5. By default, the new feature is disabled to avoid possible errors during the upgrade. Thus, customers who want to use the new DPI input must activate the function.

By enabling SSL/TLS inspection, the following features are put into effect:

  • All traffic is checked to determine if it is SSL/TLS traffic.
  • The configured SSL/TLS rules are applied.
  • The traffic is decrypted by the DPI-Enginge, which also makes the web policies work.
  • In the dashboard, the corresponding widget is activated and the values are updated.

Bug fixes

  • NNC-54339 [Config Migration Framework] v17.5 MR-10 to v18.0 GA migration support
  • NC-56550 [Policy Routing] SD-WAN policy routing screen smudge with blue strip
  • NC-56201 [RED] Backup/Restore failed from v17.5 MR to v18 with specific RED configuration
  • NC-56397 [Web] User getting certificate error

More information


Patrizio is an experienced network specialist with a focus on Sophos firewalls, switches and access points. He supports customers or their IT department in the configuration and migration of Sophos firewalls and ensures optimal network security through clean segmentation and firewall rule management.

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