ADTRAN Express 4110, User Manual

Page: 111 / 205

Chapter 3. Terminal Menu Operation and Structure
61200176L3-1 Express 4110/4120 User Manual 3-55
Filters/LAN-to-WAN (Out)
Write security: 2; Read security: 5
The packets which come out toward the WAN from the Express 4110/
4120 can be filtered in three ways:
Filters/Out Exceptions
Write security: 2; Read security: 5
This is a list of up to 32 filter entries. The setup is exactly the same as the
Filter/In Exceptions
list.
Filters/Demand Dial
Write security: 2; Read security: 5
The demand dial filters have two purposes: 1) cause the Express 4110/
4120 in Bridge mode to dial this Connection List profile, and 2) determine
which traffic will cause the idle timer to be reset, keeping the connection
active. The latter is used in Bridge or IP/IPX Router mode. The idle
timer is a timer in the Express 4110/4120 which continually increments
until it reaches the idle time-out parameters value set in the Connection
List, at which point the connection is hung-up.
When this filter is enabled, direct control can be placed over which pack-
ets are considered as demand and which are ignored. Packets that are
ignored cause a connection not to be dialed and do not reset the idle
timer of an active connection. This is especially helpful for bridged con-
nections since bridges cannot easily distinguish true demand traffic from
Disabled (def) Turns off packet output filtering. No outgoing
packets are blocked.
Block All All outgoing packets to the WAN are blocked
except as defined in the
Filters/Out Excep-
tions list.
Forward All All outgoing packets to the WAN are not blocked
except as defined in the
Filters/Out Excep-
tions list.