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https://issues.apache.org/jira/browse/CLOUDSTACK-5144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13871509#comment-13871509
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Anthony Xu commented on CLOUDSTACK-5144:
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rules look good, seems linux doesn't go though the rules,
can you check value of below configs? 
cat /proc/sys/net/bridge/bridge-nf-call-iptables
cat /proc/sys/net/bridge/bridge-nf-call-arptables

They should be 1, if not execute following,
echo 1 > /proc/sys/net/bridge/bridge-nf-call-iptables
echo 1 > /proc/sys/net/bridge/bridge-nf-call-arptables


Anthony

> [Automation]: Basic Zone Security Groups - SSH to VM is allowed even when 
> there is no ingress rule defined for the security group
> ---------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-5144
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-5144
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: Network Controller
>    Affects Versions: 4.3.0
>            Reporter: Gaurav Aradhye
>            Assignee: Wei Zhou
>            Priority: Blocker
>              Labels: automation
>             Fix For: 4.3.0
>
>         Attachments: MS-Log.txt, agent.log, agent.log, ipset-L output.txt, 
> iptables-rules.txt, log.zip, management-server.log, management-server.zip
>
>
> In Basic Zone Setup:
> 1. Create an account
> 2. Deploy a VM in that account
> 3. Verify that any ingress rule is not defined for the security group 
> belonging to the account
> 4. Try SSH to VM using the nic ipaddress from external client
> SSH is successful to the VM where as it should fail when the ingress rule is 
> not defined.



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