Firewall management


New Member
Sep 11, 2019
Hi everybody.
Say, we have many VM in 10.42.x.y
One is on 10.42.a.b
Host is on 10.42.1.z and gateway is on

We need to reject all traffic from/to 10.42.a.b to/from BUT accept all traffic from/to 10.42.a.b to/from

Say the rule in plain english,
  1. Reject all traffic from 10.42.a.b to except to
  2. Reject all traffic from except from to 10.42.a.b
  3. Accept all traffic from elsewhere to 10.42.a.b
  4. Accept all traffic to elsewhere from 10.42.a.b
We cannot manage the way to write the correct rules ;(


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