5.1

Table Of Contents
Firewall Service
A FirewallService element defines firewall rules that, when matched, block or allow incoming or outgoing
traffic on the vApp network. A firewall rule in a vApp network can specify the destination as a combination
of address and port, or as a specific virtual NIC in a Vm This FirewallService allows TCP traffic to ports 21 and
22.
<FirewallService>
<IsEnabled>true</IsEnabled>
<FirewallRule>
<IsEnabled>true</IsEnabled>
<Description>FTP Rule</Description>
<Policy>allow</Policy>
<Protocols>
<Tcp>true</Tcp>
</Protocols>
<DestinationPortRange>21</DestinationPortRange>
<DestinationIp>10.147.115.1</DestinationIp>
<SourcePortRange>any</SourcePortRange>
<SourceIp>any</SourceIp>
<EnableLogging>false</EnableLogging>
</FirewallRule>
<FirewallRule>
<IsEnabled>true</IsEnabled>
<Description>SSH Rule</Description>
<Policy>allow</Policy>
<Protocols>
<Tcp>true</Tcp>
</Protocols>
<DestinationPortRange>22</DestinationPortRange>
<DestinationIp>10.147.115.1</DestinationIp>
<SourcePortRange>any</SourcePortRange>
<SourceIp>any</SourceIp>
<EnableLogging>false</EnableLogging>
</FirewallRule>
</FirewallService>
You can see this example in the context of a vApp NetworkConfigSection in “Example: Update a
NetworkConfigSection,” on page 110
An alternate implementation of the second FirewallRule in this example includes a DestinationVm element
that specifies the destination as a specific virtual NIC (identified in the VmNicId element) in a specific Vm
(identified in the VAppScopedVmId element. The value of VAppScopedVmId is taken from the VAppScopedLocalId
element of the Vm and the VmNicId value is taken from its PrimaryNetworkConnectionIndex. See
“Example: Configuration Links in a Vm Element,” on page 101. The IpType is set to assigned, indicating that
the NIC retains its assigned IP address. If you set IpType is set to NAT, the IP address of the NIC is its translated
address.
<FirewallRule>
<IsEnabled>true</IsEnabled>
<Description>allow ssh to a specific NIC in a specific Vm</Description>
<Policy>allow</Policy>
<Protocols>
<Tcp>true</Tcp>
</Protocols>
<DestinationPortRange>22</DestinationPortRange>
<DestinationVm>
Chapter 5 Deploying and Operating vApps
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