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̈ Chapter 8: Firewall LANCOM Reference Manual LCOS 3.50
145
Firewall
WEBconfig, Telnet
Under WEBconfig or Telnet the Firewall rules are configured in the following
menus and lists:
There is a special syntax in LCOS for the description of the Firewall rules. This
syntax allows to describe also complex relations for checking and treatment
of data packets within the Firewall just with a few characters.
Rules are defined in the rule table. Pre-defined objects can be saved in two
additional tables in order to prevent entering frequently used objects each
time again in LCOS syntax:
̈ The action table contains Firewall actions
̈ The object table contains stations and services
Objects from these tables can be used for rule definition, but this is
not a must. They simply facilitate the use of frequently used objects.
Rule table
The rule table combines different information to a Firewall rule. The rule con-
tains the protocol to be filtered, the source, the destination as well as the Fire-
wall action to be executed. For each Firewall rule there is an additional on/off-
switch, a priority, the option for a linkage with other rules and an activation
of the rule for VPN connections. General information concerning these param-
eters can be found in section ’Parameters of Firewall rules’ →page 125.
The definition of the Firewall rules can be composed of entries of the object
table for protocols, services, stations (→page 146), and of entries of the
Configuration tool Run
WEBconfig Expert Configuration / Setup / IP Router Module/ Firewall: Rule
Table, Object Table, Actions Table
Terminal/Telnet Setup / IP Router Module/ Firewall / Rule Table, Object Table,
Actions Table