hackers. See also attacks
authentication, 70
replay attacks, 103
site-to-site VPNs, 179
HELLO packets, 241
Help File page, 164
HKEY_LOCAL_MACHINE registry key, 191, 198. See also registry
Oakley logs, 282
tracing, 280
troubleshooting, 280, 282, 303, 304
Hosts file, 139
hotfixes, 72