Another, more important thing: it has been brought to my attention
that many OS'es have a kernel bug that causes all connections to
remote hosts to be cut if remote identd is not responding. Therefore,
if your server host OS has this bug DO NOT USE IdentityCheck.
SunOS 4.1.1, NeXT 2.0a, ISC 3.0 with TCP 1.3, AIX 3.2.2 have the bug,
later ok. Sony News/OS 4.51, HP-UX 8-something, Ultrix 4.3 still
have the bug. Fix for Ultrix is available (CXO-8919).
Thanks to Per-Steinar Iversen for this information.
-- Ari Luotonen | World-Wide Web Project | CERN | phone: +41 22 767 8583 CH - 1211 Geneve 23 | email: luotonen@dxcern.cern.ch