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Table Of Contents
CHAPTER 14 Understanding Policies
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This approach allows you to specify the host zones in a different order from that in the
list of zone descriptions.
Using the examples above, VMware ACE first searches for a match for the Eastern
Regional Office zone description (zone.description.1 criteria in the zone
descriptions). If it finds a match, it applies the host quarantine policies defined for
host.zone.0.
You may specify the following policies for each zone:
host.zone.<zone_number>.blockIPv4 = "1"
This policy specifies whether IPv4 network traffic should be blocked. If you add this
policy with a value of 1, IPv4 traffic is blocked. The policy defaults to 0, which allows
IPv4 traffic.
Note: The advanced network quarantine features have not been tested with IPv6.
Use of these features in an IPv6 environment is not supported.
host.zone.<zone_number>.exceptions.IPv4 = "<dns_name_or_IP>"
This policy specifies a list of exceptions to the policy specified by the blockIPv4
settings. You may mix DNS names and IP addresses in a comma-separated list. Do not
use any spaces in the comma-separated list. For each item in the list, you may specify
a subnet — for example, /24 — if you wish. You may specify subnets for both IP
addresses and DNS names. When you specify blockIPv4 = "1", the list is a
whitelist. When you specify blockIPv4 = "0", the list is a blacklist.
host.zone.<zone_number>.restrictARP = "0"
host.zone.<zone_number>.restrictDHCP = "0"
host.zone.<zone_number>.restrictDNS = "0"
host.zone.<zone_number>.restrictICMP = "0"
These policies may appear in the policy file and are set to 0 by default. Do not change
these defaults, which are required for the zone detection feature to work properly.
Defining Modified Default Host Policies
By default, the host computer has network access. This default and other defaults can
be changed by specifying a default policy. To specify a modified set of default policies,
use the same parameters that are described in this section, except substitute the
prefix host.default for the prefix host.zone.<zone_number> shown in
the descriptions above. You can specify new defaults for blockIPv4 and
exceptions.IPv4. You do not need to specify the parameters present, key or
descriptionName when you set these defaults; do not use them with the
host.default prefix.