NBB-800
User Manual for NRSW version 4.5.0.100
5.5.3. Rules
In general, the firewall is set up of a range of rules which control each packet’s permission to pass the
router. Please note that the rules are processed by order, that means traversing the list from top to
bottom until a matching rule is found. Packets which are not matching any of the rules configured will
be ALLOWED.
NetModule Router Simulator
Hostname NB1600
Software Version 4.4.0.103
© 2004-2020, NetModule AG
Firewall
Administration
Address / Port Groups
Filtering Rules
NAPT
Masquerading
Inbound Rules
Outbound Rules
Firewall Filtering Rules
This menu can be used to filter the packets passing the device and targeting its services.
Packets which are not matching any of the rules below will be ALLOWED.
Description
Action
Source
Destination
Port(s)
DENY-WAN-ALL
DENY
ANY on WAN
ANY
ANY
Apply
Clear
HOME
INTERFACES
ROUTING
FIREWALL
VPN
SERVICES
SYSTEM
LOGOUT
Figure 5.25.: Firewall Rules
Parameter
Firewall Rule Configuration
Description
A meaningful description about the purpose of this rule
Action
Specifies whether the packets of this rule should be allowed or denied
log matches
Throw a syslog message if rule matches
Source
The source address of matching packets, can be any or specified by
address/network. Selecting on source MAC addreses is possible as
well.
Destination
The destination address of matching packets, can be any, local (ad-
dressed to the system itself) or specified by address/network
Incoming interface
The interface on which matching packets are received
89
