I can't open my web console

Hi,

a fresh install should fix you issue.

You could try logging into the externall address.

Ian

Hello JLE,

Thank you for contacting the Sophos Community.

If you disable HTTPS and SSH access on the LAN and no other zone has this access enabled and you didn't create a Local ACL exception, then you would need to re-image the device. 

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How to reimage XG Firewall

http://docs.sophos.com/nsg/sophos-firewall/18.0/Help/en-us/webhelp/onlinehelp/nsg/learningContents/ReimagingXGFirewall.html

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Regards,

Hello and thank you for your answers.

This allowed me to see the good functioning and the speed of reaction of the community.

 Thank you all. 
See you soon

 jl