IBM Tivoli Monitoring > Version 6.3 Fix Pack 2 > Installation Guides > Installation Guide > Firewalls > Determine which option to use
IBM Tivoli Monitoring, Version 6.3 Fix Pack 2
Number of internet zones
The final factor to be taken into consideration is the number of internet zones, that is, how many barrier firewalls must be crossed.
If there are two or more translating firewalls, then option 4, a firewall gateway, must be used for interoperability in this firewall environment (see Implementation with firewall gateway).
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Determine which option to use