Contents vGBChapter 7 — Security ............................................................7-1Suggested security measures ................................................. 7-2User accounts........................................................................ 7-2Telnet access......................................................................... 7-5Calling number authentication (CNA)........................................ 7-6Enabling CNA ...................................................................... 7-7Configuring a connection profile for CNA................................ 7-7About filters and filter sets ...................................................... 7-9What’s a filter and what’s a filter set?................................... 7-9How filter sets work............................................................. 7-9How individual filters work.................................................. 7-12Design guidelines.............................................................. 7-18Working with IP filters and filter sets ...................................... 7-19Adding a filter set .............................................................. 7-20Viewing filter sets.............................................................. 7-26Modifying filter sets ........................................................... 7-26Deleting a filter set............................................................ 7-27A sample IP filter set ......................................................... 7-27Chapter 8 — Telephone Services ............................................8-1Telephone Setup Services (POTS)............................................ 8-1Telephone Connections........................................................ 8-2Priority Ringing .................................................................... 8-5
