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From "Wido den Hollander (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CLOUDSTACK-9552) KVM Security Groups do not allow DNS over TCP egress
Date Thu, 20 Oct 2016 08:29:58 GMT

     [ https://issues.apache.org/jira/browse/CLOUDSTACK-9552?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wido den Hollander updated CLOUDSTACK-9552:
-------------------------------------------
    Summary: KVM Security Groups do not allow DNS over TCP egress  (was: KVM Security Groups
do now allow DNS over TCP egress)

> 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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