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The egress firewall rules applied will restrict the traffic from SRX guest network.
APIs:
We use the below APIs\[1\] to configure the egress firewall rules on SRX.Wiki Markup
createEgressFirewallRule: To configure the egress firewall rule on the guest network.
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Support egress rules feature for shared networks in SRX.
\[1\] [https://cwiki.apache.org/confluence/display/CLOUDSTACK/Egress+firewall+rules+for+guest+network]Wiki Markup