[jira] [Commented] (CLOUDSTACK-9552) KVM Security Groups do not allow DNS over TCP egress

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15624875#comment-15624875 ] 

ASF GitHub Bot commented on CLOUDSTACK-9552:
--------------------------------------------

Github user rhtyd commented on the issue:

    https://github.com/apache/cloudstack/pull/1713
  
    @blueorangutan package


> KVM Security Groups do not allow DNS over TCP egress
> ----------------------------------------------------
>
>                 Key: CLOUDSTACK-9552
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9552
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: KVM
>    Affects Versions: 4.8.0, 4.9.0
>         Environment: KVM Basic Networking
>            Reporter: Wido den Hollander
>            Assignee: Wido den Hollander
>              Labels: dns, dnssec, security-groups
>             Fix For: Future
>
>
> When egress filtering is configured all outbound traffic is blocked unless configured otherwise.
> With the exception that UDP/53 DNS is allowed implicitly by the Security Groups.
> Many DNS responses are larger then 4k, with DNSSEC for example and require TCP to be allowed.
> The Security Groups should also allow TCP/53 when egress filtering is configured.



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