topic Re: How security policy - intrazone works? in General Topics

How security policy - intrazone works?

jeremylo — Fri, 13 Jul 2018 02:05:45 GMT

Trying to use a Security policy with type intrazone and action is Deny (any application & service).

Target is to block all communication within the same zone (subnet). Such as ping, file share (smb), ftp, etc.

The layer3 interface and the computers were connected to a unmanaged switch.

But the outcome is only the gateway (layer3 interface) cannot be contact. All the computers can still comunicate with each other.

Mick_Ball — Fri, 13 Jul 2018 04:55:32 GMT

Your devices are on the same broadcast domain so they do not need to pass through the PA interface to communicate with each other.

search this site for “intrazone”.

Mick_Ball — Fri, 13 Jul 2018 04:58:10 GMT

Nice pop from Mr Reaper...

RobinClayton — Fri, 13 Jul 2018 15:27:51 GMT

Hosts on the same subnet never see the firewall.

Intrazone seperates different subnets from each other, and requires that the firewall is the Gateway for these subnets.

JoeAndreini — Fri, 13 Jul 2018 16:12:17 GMT

You could segregate traffic within the same subnet using L2 or vwire interfaces and inspect the traffic using intra-zone rules.

jeremylo — Mon, 16 Jul 2018 01:35:03 GMT

@JoeAndreini wrote:
You could segregate traffic within the same subnet using L2 or vwire interfaces and inspect the traffic using intra-zone rules.

Hello JoeAndreini,

This seems impractical. I'll have huge workload to assign each computer to has its own L2 interface.