SSL VPN destination not allowed by access control
I am currently supporting 20-25 users on both GVC and SSL VPN. I am noticing in the event logs that I am frequently receiving
Category: SSL VPN
Message: "destination for 255.255.255.255 is not allowed by access control"
I am not experiencing any major issues that I am aware of.
I have checked in the Manage-->Connectivity--> SSL VPN --> Client Settings -->Default Device Profile--> Configure --> Client Settings and there are no entries for 255.255.255.255
Where could this be coming from? Is this from an individual client computer requesting 255.255.255.255?
I am on a NSa2600 on SonicOS Enhanced 126.96.36.199-53n
Any info would be greatly appreciated.
Welcome to SonicWall community.
Usually that destination IP is used for NetBIOS traffic. You can probably set up a packet capture and check if there are drops for TCP/UDP 137 and 138.
This is netbios traffic. default behavior is to drop this traffic. If it is not causing issues you can do nothing or you can following this kb which shows you how to enabled it.