Open Stack

Guys,

A new test to see that the packages currently did not mach any iptables
rules at the compute node, completely bypassing "Security Groups", look:


* Instance with ONLY port 80 TCP open:

---
root at hypervisor-1:~# *iptables -L neutron-openvswi-i2fa3cfab-a -nv*
Chain neutron-openvswi-i2fa3cfab-a (1 references)
 pkts bytes target     prot opt in     out     source
destination
    0     0 DROP       all  --  *      *       0.0.0.0/0
0.0.0.0/0            state INVALID
    0     0 RETURN     all  --  *      *       0.0.0.0/0
0.0.0.0/0            state RELATED,ESTABLISHED
    0     0 RETURN     tcp  --  *      *       0.0.0.0/0
0.0.0.0/0            tcp dpt:80
    0     0 RETURN     udp  --  *      *       192.168.50.3
0.0.0.0/0            udp spt:67 dpt:68
    0     0 neutron-openvswi-sg-fallback  all  --  *      *
0.0.0.0/0
0.0.0.0/0
---

Starting dumping TCP data directly on instance port:

---
root at hypervisor-1:~# *tcpdump -ni tap2fa3cfab-a3*
tcpdump: WARNING: tap2fa3cfab-a3: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on tap2fa3cfab-a3, link-type EN10MB (Ethernet), capture size
65535 bytes
....
---

....and trying to connect at its port 22 from the Internet (not allowed!!):

---
thiago at desktop-1:~$ *telnet 189.8.93.69 22*
Trying 189.8.93.69...
Connected to 189.8.93.69.
Escape character is '^]'.
SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1.1
---

NOTE: *189.8.93.69* is the 'Floating IP' attached to that Instance and *
192.168.50.2* is the Instance IP.

---
root at hypervisor-1:~# *tcpdump -ni tap2fa3cfab-a3*
tcpdump: WARNING: tap2fa3cfab-a3: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on tap2fa3cfab-a3, link-type EN10MB (Ethernet), capture size
65535 bytes
22:13:40.800122 IP 200.232.113.107.7955 > 192.168.50.2.22: Flags [S], seq
2257975349, win 29200, options [mss 1460,sackOK,TS val 52435018 ecr
0,nop,wscale 7], length 0
22:13:40.800525 IP 192.168.50.2.22 > 200.232.113.107.7955: Flags [S.], seq
2704020835, ack 2257975350, win 14480, options [mss 1460,sackOK,TS val
703831 ecr 52435018,nop,wscale 2], length 0
22:13:40.805484 IP 200.232.113.107.7955 > 192.168.50.2.22: Flags [.], ack
1, win 229, options [nop,nop,TS val 52435019 ecr 703831], length 0
22:13:40.821804 IP 192.168.50.2.22 > 200.232.113.107.7955: Flags [P.], seq
1:42, ack 1, win 3620, options [nop,nop,TS val 703837 ecr 52435019], length
41
22:13:40.826058 IP 200.232.113.107.7955 > 192.168.50.2.22: Flags [.], ack
42, win 229, options [nop,nop,TS val 52435025 ecr 703837], length 0
---

See?! Security Groups are being ignored.

Please, help!

Thanks!   =)
Thiago


On 28 October 2013 22:03, Martinx - ジェームズ <thiagocmartinsc at gmail.com> wrote:

> Okay, I think I got it...
>
> Nova should proxy 'Security Groups' calls to Neutron (and not do it by
> itself), so, it must have:
>
> --- nova.conf ---
>  firewall_driver = nova.virt.firewall.NoopFirewallDriver
> security_group_api = neutron
> ---
>
> At Neutron OVS Agent (ovs_neutron_plugin.ini), you must set:
>
>  ---
> firewall_driver =
> neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
> ---
>
> Source:
> http://docs.openstack.org/havana/install-guide/install/apt/content/install-neutron.install-plugin.ovs.html
>
> BUT, it doesn't work.
>
> All my Security Groups rules are just being ignored. They are all applied
> at the Compute Node OVS ports but, no effect at all.
>
> Thanks!
> Thiago
>
>
> On 28 October 2013 21:26, Martinx - ジェームズ <thiagocmartinsc at gmail.com>wrote:
>
>> Well,
>>
>> Now I'm using "firewall_driver = nova.virt.firewall.NoopFirewallDriver"
>> for both Nova and Neutron (Open vSwitch Agent) but, Security Groups rules
>> are applied but ignored.
>>
>> Tips!?
>>
>> Thanks!
>> Thiago
>>
>>
>> On 28 October 2013 21:13, Martinx - ジェームズ <thiagocmartinsc at gmail.com>wrote:
>>
>>> Guys,
>>>
>>> I'm back using "libvirt_vif_driver =
>>> nova.virt.libvirt.vif.LibvirtHybridOVSBridgeDriver" (nova-compute.conf) but
>>> the problem persist for "tenant1".
>>>
>>> My nova.conf contains:
>>>
>>> ---
>>> # Network settings
>>> network_api_class = nova.network.neutronv2.api.API
>>> neutron_url = http://contrller-1.mydomain.com:9696
>>> neutron_auth_strategy = keystone
>>> neutron_admin_tenant_name = service
>>> neutron_admin_username = neutron
>>> neutron_admin_password = 123test123
>>> neutron_admin_auth_url = http://controller-1.mydomain.com:35357/v2.0
>>>
>>> linuxnet_interface_driver =
>>> nova.network.linux_net.LinuxOVSInterfaceDriver
>>>
>>> # If you want Neutron + Nova Security groups
>>> firewall_driver = nova.virt.firewall.NoopFirewallDriver
>>> security_group_api = neutron
>>> ---
>>>
>>> Is that a valid configuration for Havana?! I'm get it from my previous
>>> Grizzly setup.
>>>
>>> Also, I just realized that, there are two places to configure the
>>> "firewall_driver", first one is located at nova.conf, the second is located
>>> at "ovs_neutron_plugin.ini" under [securitygroups], of course, I believe,
>>> they must "match", I mean, I must be the same for both services, right?!
>>>
>>> Thanks!
>>> Thiago
>>>
>>>
>>> On 28 October 2013 20:30, Martinx - ジェームズ <thiagocmartinsc at gmail.com>wrote:
>>>
>>>> Stackers!
>>>>
>>>> I'm trying to configure my Security Groups and, I'm seeing that the
>>>> rules are being applied at the Compute Node OVS ports (iptables /
>>>> ip6tables) BUT, it does have no effect (or just being ignored?).
>>>>
>>>> I'm using Ubuntu 12.04.3 + Havana from Cloud Archive.
>>>>
>>>>
>>>> For example:
>>>>
>>>> I have 1 Instance with 1 Floating IP attached to it, open port is: 80.
>>>>
>>>> Look:
>>>>
>>>> ---
>>>> root at hypervisor-1:~# iptables -L neutron-openvswi-i9cf07c24-7 -nv
>>>> Chain neutron-openvswi-i9cf07c24-7 (1 references)
>>>>  pkts bytes target     prot opt in     out     source
>>>> destination
>>>>     0     0 DROP       all  --  *      *       0.0.0.0/0
>>>> 0.0.0.0/0            state INVALID
>>>>     0     0 RETURN     all  --  *      *       0.0.0.0/0
>>>> 0.0.0.0/0            state RELATED,ESTABLISHED
>>>>     0     0 RETURN     tcp  --  *      *       0.0.0.0/0
>>>> 0.0.0.0/0            tcp dpt:80
>>>>     0     0 RETURN     udp  --  *      *       192.168.50.3
>>>> 0.0.0.0/0            udp spt:67 dpt:68
>>>>     0     0 neutron-openvswi-sg-fallback  all  --  *      *
>>>> 0.0.0.0/0            0.0.0.0/0
>>>> ---
>>>>
>>>>
>>>> The problem is that the respective Instance still answers SSH to the
>>>> Internet. I mean, ALL ports are OPEN!! Regardless of what I typed at its
>>>> Security Groups.
>>>>
>>>> I created one "Security Group", called "web", only with TCP port 80 on
>>>> it, nothing more, nothing less. This Instance doesn't belong to the
>>>> "default" Security Group", only "web".
>>>>
>>>> Recently I've changed the *libvirt_vif_driver* from *
>>>> nova.virt.libvirt.vif.LibvirtHybridOVSBridgeDriver* to *
>>>> nova.virt.libvirt.vif.LibvirtOpenVswitchDriver*, maybe it is the
>>>> cause?!
>>>>
>>>> Any tips!?
>>>>
>>>> Thanks!
>>>> Thiago
>>>>
>>>
>>>
>>
>
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