Use Advanced ISA Logging to an MSDE or SQL Database to take advantage of the real-time logging and searching capabilities that this type of logging allows.
Use the logging mechanism to troubleshoot connectivity problems and errors with firewall policy rules.
Reset VPN sessions from the Sessions tab of the Monitoring node if changes are made to the VPN policy.
Use Microsoft Operations Manager (MOM) 2005 with the ISA Server 2004 Management Pack to monitor an ISA Server 2004 environment whenever possible.
Make use of connectivity verifiers to provide "quick glance" views of critical network services.