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https://issues.apache.org/jira/browse/CLOUDSTACK-6432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13972236#comment-13972236
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Sheng Yang commented on CLOUDSTACK-6432:
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To verify this:
1. Start a basic network or shared network(no isolated network or VPC). Deploy
a vm in it.
2. Check VR iptables. See if(assume cidr is 10.1.1.1/24):
-A INPUT -i eth0 -p udp -m udp --dport 53 -s 10.1.1.1/24 -j ACCEPT
-A INPUT -i eth0 -p tcp -m tcp --dport 53 -s 10.1.1.1/24 -j ACCEPT
in it.
> Prevent VR from response to DNS request from outside of network
> ---------------------------------------------------------------
>
> Key: CLOUDSTACK-6432
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-6432
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Affects Versions: 4.4.0, 4.5.0
> Reporter: Sheng Yang
> Assignee: Sheng Yang
> Fix For: 4.4.0, 4.5.0
>
>
> In basic and shared network, VR use private network nic for dhcp/dns
> services. But if private network is on the internet as well, it would make VR
> facing outside network.
> We would restrain the VR DNS service inside CloudStack managed network.
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