Cannot establish NTLM Authentication channel

Lots of posts about this. Here is an example. AD SSO - Cannot establish NTLM authentication channel with xxx Seems like the recommendation is to disable AD SSO in all zones. But what if we want SSO...
VPN established but XFRM Gateway down on both sides

This is an issue that I have seen with multiple customers. The VPN connection as Tunnel interface is established. The XFRM is configured to be non-overlapping in any sense with other IP subnets on the...
AD SSO operations

Hi, I’m struggling to find documentation about how Active Directory SSO operates (as opposed to how to set it up). The kind of questions I have are… Is the initial browser authentication transparent...
AD Authentication Time-out

This issue just started on Sunday, reoccurred just now. Remote VPN login times-out. I've narrowed it down to an issue with the FW connecting to AD. The "Test Connection" failed. A reboot of the FW fixes...
Radius Authentication over SD-WAN

I have radius authentication working locally from the Sophos Firewall to the local radius server for both VPN and for WiFi authentication, however I am unable to get the authentication working from the...