Black Box LES114BA Server User Manual


 
Protocol: TCP
Direction: Egress
Action: Block
The firewall rules are processed in a set order- from top to bottom. So rule placement is important. For
example with the following rules, all traffic coming in over the Network Interface is blocked except when
it comes from two nominated IP addresses (SysAdmin and Tony):
To allow all incoming traffic on all
interfaces from the SysAdmin:
To allow all incoming
traffic from Tony:
To block all incoming traffic
from the Network
Interface:
Interface
Any
Any
Network Interface
Port Range
Any
Any
Any
Source IP
IP address of SysAdmin
IP address of Tony
Any
Destination IP
Any
Any
Any
Protocol
TCP
TCP
TCP
Direction
Ingress
Ingress
Ingress
Action
Accept
Accept
Block
However if the Rule Order above was to be changed so the “Block Everyone Else” rule was second on
the list then the traffic coming in over the Network Interface from Tony would be blocked.
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