ADTRAN Express L768 - Manual (Page 87)

Chapter 3. Terminal Menu Operation and Structure
61203192L1-20 Express L768 User Manual 3-53
»» PPP Profile/Filters
The Express L768 can block packets in and out of a WAN port by use
of the filters. They are set up in two steps: 1) define the types of packets
that would be of interest in the
Configuration/Security/Filter De-
fines menu, and 2) set up the filter type and combination of defines
that will cause a packet block.
Filters/WAN-to-LAN (In)
Write security: 2; Read security: 5
The packets which come into the Express L768 can be filtered in three
ways:
Disabled (def) Turns off packet input filtering. No incoming
packets are blocked.
Block All All incoming packets from the WAN are
blocked except as defined in the
Filters/In Ex-
ceptions list.
Forward All All incoming packets from the WAN are not
blocked except as defined in the
Filters/In Ex-
ceptions list.