Configure firewall to block applications.

Douglas

I have an uplink between two layer 2 switches and I need to add a firewall into the link to allow me to restrict the traffic between them. The uplink is on a single class C subnet with no vlan tagging. I need to limit things like who can RDP to/from devices on this subnet.

I have a SonicWall SOHO 250 firewall and would like some suggestions on the best way to configure it.

Saravanan

Hi @DOUGLAS,

Welcome to SonicWall Community.

It looks like you wanted to insert the firewall between two layer 2 switches. Both the switches are in same class C subnet and you wanted to restrict traffic between the same subnet devices using the firewall. If I sound right, possibly if the traffic between these switches passes via the SonicWall, we can have your goal achieved using Firewall Access Rule feature based on source or destination IP address and service (RDP, HTTS, etc,.) restriction.

Please take a look at the below KB article for access rule blocking.

https://www.sonicwall.com/support/knowledge-base/using-firewall-access-rules-to-block-incoming-and-outgoing-traffic/170503532387172/

Please let us know for clarifications.

Ajishlal

Hi @Douglas

If you want control applications such as rdp / teamviewer accsss,
You can use below KB to achieve that.
https://www.sonicwall.com/support/knowledge-base/how-can-i-block-teamviewer-using-application-control-advanced/170505625393025/