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https://issues.apache.org/jira/browse/CLOUDSTACK-8688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14647279#comment-14647279
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Daan Hoogland commented on CLOUDSTACK-8688:
-------------------------------------------
Sanjeev, please do not mark any ticket blocker before discussing the issue on
list. A blocker blocks a release and no one can decide that on their own, it
needs to be on list.
> Defualt policy for INPUT and FORWARD chain is ACCEPT in VR filter table
> -----------------------------------------------------------------------
>
> Key: CLOUDSTACK-8688
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-8688
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Virtual Router
> Affects Versions: 4.6.0
> Environment: Latest build from ACS master.
> Zone type: Advanced
> Reporter: Sanjeev N
> Assignee: Wilder Rodrigues
> Priority: Critical
>
> Defualt policy for INPUT and FORWARD chain is ACCEPT in VR filter table
> Steps to reproduce the issue:
> =======================
> 1.Bring up CS in advanced zone with any supported hypervisor (e.g. Xenserver)
> 2.Create an isolated network with Network Offering
> "DefaultIsolatedNetworkOfferingWithSourceNatService"
> 3.Deploy one guest vm within that network
> Result:
> =======
> IP tables rules on the VR created are as follows:
> root@r-7-VM:~# iptables --list
> Chain INPUT (policy ACCEPT)
> target prot opt source destination
> NETWORK_STATS all -- anywhere anywhere
> ACCEPT all -- anywhere vrrp.mcast.net
> ACCEPT all -- anywhere 225.0.0.50
> ACCEPT all -- anywhere anywhere state
> RELATED,ESTABLISHED
> ACCEPT icmp -- anywhere anywhere
> ACCEPT all -- anywhere anywhere
> ACCEPT all -- anywhere vrrp.mcast.net
> ACCEPT all -- anywhere 225.0.0.50
> ACCEPT all -- anywhere anywhere state
> RELATED,ESTABLISHED
> ACCEPT icmp -- anywhere anywhere
> ACCEPT all -- anywhere anywhere
> ACCEPT udp -- anywhere anywhere udp dpt:bootps
> ACCEPT udp -- anywhere anywhere udp dpt:domain
> ACCEPT tcp -- anywhere anywhere tcp dpt:domain
> ACCEPT tcp -- anywhere anywhere tcp dpt:http
> state NEW
> ACCEPT tcp -- anywhere anywhere tcp
> dpt:http-alt state NEW
> Chain FORWARD (policy ACCEPT)
> target prot opt source destination
> NETWORK_STATS all -- anywhere anywhere
> ACCEPT all -- anywhere anywhere state
> RELATED,ESTABLISHED
> ACCEPT all -- anywhere anywhere state NEW
> ACCEPT all -- anywhere anywhere state
> RELATED,ESTABLISHED
> ACCEPT all -- anywhere anywhere state
> RELATED,ESTABLISHED
> Chain OUTPUT (policy ACCEPT)
> target prot opt source destination
> NETWORK_STATS all -- anywhere anywhere
> Chain NETWORK_STATS (3 references)
> target prot opt source destination
> all -- anywhere anywhere
> all -- anywhere anywhere
> tcp -- anywhere anywhere
> tcp -- anywhere anywhere
> But the Default policy for INPUT and FORWARD chain should be DROP instead of
> ACCEPT. Otherwise all the traffic would be allowed to VR.
> Same is the case with VPC and Shared network as well.
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