Is the local area network affected, such as when accessing the file server (NAS), if there is downtime on the SonicWall NGFW? If not, what do I need to fix it?
Local traffic (same subnet) will never be affected by the Firewall. Do you access the NAS by hostname or IP? If the hostname gets resolved by the Firewall (Static DNS Proxy entry) then this might be the reason.
We're accessing NAS via IP. Our firewall acting as a Layer 3 gateway router between Vlans/subnets and also provide DHCP. The switch also relies on the Sonicwall for routing.
Like I said, if it's the same subnet then the SNWL should not affect the NAS connection, but if you're connecting from a different subnet (or VLAN) the SNWL will definitely affect when down.
Your only option would be to deploy the Firewall with a seperate HA appliance to avoid this single point of failure.
Answers
Local traffic (same subnet) will never be affected by the Firewall. Do you access the NAS by hostname or IP? If the hostname gets resolved by the Firewall (Static DNS Proxy entry) then this might be the reason.
—Michael@BWC
We're accessing NAS via IP. Our firewall acting as a Layer 3 gateway router between Vlans/subnets and also provide DHCP. The switch also relies on the Sonicwall for routing.
Like I said, if it's the same subnet then the SNWL should not affect the NAS connection, but if you're connecting from a different subnet (or VLAN) the SNWL will definitely affect when down.
Your only option would be to deploy the Firewall with a seperate HA appliance to avoid this single point of failure.
—Michael@BWC