IPSEC connection showing this error Couldn't authenticate the local gateway. Check the authentication settings on both devices.

We are trying to setup a IPSEC tunnel between a Sophos Firewall and a ISR4300 After activating its showing error Couldn't authenticate the local gateway. Check the authentication settings on both devices...
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...
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...
Web Server Authentication Policy by other group memberships

Hello, I am trying to use Authentication Policies for one of our Web Servers to restrict access to members of three specific Active Directory groups. When the user logs in, the authentication log shows...
Site to Site VPN Authentication on reboots - Change PSK works

I have multiple Sophos site to site VPN's back to a central router. Whenever any of the sites losing connection they all re-connect except for 1. The Sophos VPN logs show "Couldn't authenticate the local...