Troubleshoot DNS rating error occurs (no available...

navellano · 05-27-2024

Description This article describes the basic troubleshooting when the SSL VPN connection is down and unable to establish the connection. The specific error 'allocSSLConn:306 sconn ' is received in the SSL VPN debug. Scope FortiGate v7.0 and above. So...

navellano · 09-19-2023

Description This article describes how to configure an IPsec VPN tunnel to connect branch offices 1 and 2 via a connection between them. Scope FortiGate v6.0 and later. Solution Diagram: The following is the IP address information of all FortiGates: ...

navellano · 07-14-2023

Description This article describes how to perform firmware upgrade on an individual 7.2 or higher device by following the upgrade path (federated update). FortiGate can adhere to the upgrade path to carry out the upgrade automatically when upgrading ...

navellano · 05-10-2023

Description This article explains how to resolve 'ERR_CONNECTION_REFUSED' errors when FortiGate cannot be accessed via the GUI or web browser. Scope FortiGate v6.2.x and upper. Solution The problem usually arises after a firmware upgrade: Follow the ...

navellano · 09-26-2022

Description This article describes the basic troubleshooting when a DNS rating error is encountered (no available FortiGuard SDNS servers). Scope FortiOS firmware 6.0 and above. Solution SDNS servers are DNS servers used by DNS filter profiles. The D...

navellano · 05-28-2024

Hi qsosan, Good day! According to the issue description, I understand you are having trouble obtaining an IP address from your DHCP server via VLAN5. When a DHCP server is unavailable, a machine system is typically assigned an APIPA address. Please s...

navellano · 05-22-2024

Hi MarcelKruder, Good day! According to the issue description, you are unable to connect to any network resources using SSL VPN; could you please clarify if the user can establish an SSL VPN connection but cannot access any internal network resources...

navellano · 05-22-2024

Hi Magnitude_8, Good day! Could you try to run below debug commands if you encounter an issue: # diag debug reset # diag debug console timestamp enable # diag debug application fnbamd -1 # diag de enable Regards,

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Troubleshooting Tip: Error 'allocSSLConn:306 sconn' is received in SSL VPN debug

Technical Tip: Establish connection between two different branches through IPsec VPN tunnel

Technical Tips: Firmware upgrade for FortiOS firmware 7.2 and later via the upgrade path (federated update)

Troubleshooting Tip: Error 'ERR_CONNECTION_REFUSED' is received while attempting to access FortiGate via a GUI or web browser

Troubleshoot DNS rating error occurs (no available FortiGuard SDNS servers)

Re: Fortiap dhcp issue

Re: SSL VPN issues after Windows Update (KB2267602)

Re: LDAP authentication for admins not working after FortiOS 7.4.4 update

Troubleshoot DNS rating error occurs (no available...

Re: LDAP authentication for admins not working aft...

Technical Tip: DNS over HTTPS/443 configuration

Re: Fortiap dhcp issue

Troubleshooting Tip: Error 'allocSSLConn:306 sconn...

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