Sophos utm SG 320, when I change from Ethernet interface to Ethernet VLAN I lost the connection to admin web interface

Question

Hello Community, 
 I have a Sophos utm SG 320, when I change the internal interface from Ethernet interface to Ethernet VLAN I lost the connection to admin web interface 
 
 So right now I&acute;m conencted with a ethernet cable from my pc to E0/LAN (sophos interface) and this interface is set as Ethernet and its working, but when I change it to Ethernet Vlan, I connect that interface to My switch and I tagged that interface to my vlan 2, and I connect my pc to the same switch on the same vlan but as untagged, and I can ping sophos ip address but I cannot user web admin portal:

I also created a DHCP for this interface:

On my Switch I have created vlan 2 with IP 192.68.X.X /24 and I&acute;m connected to that VLAN, I can ping the IP address of the Sophos FW, but I cannot connect to the web Admin interface. 
 
 Any idea of this? 
 
 Thanks.

Badrobot · Answer

Hmmm, I would look into the switch model or manufacturer to see if there is something more needed to get the vlan to work. I have seen switches were they do some funky version of VLANS and you have to have both tagged as well or some other option in the switch enabled. Also some switches use certain vlans for management as well, the UTM actually reserves VLAN 1 for wireless protection. My point is that there is always manufacturer specifics to consider so I would look there first.