** Changed in: neutron
Status: Opinion => New
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https://bugs.launchpad.net/bugs/1518296
Title:
Non snated packet should be blocked
Status in neutron:
New
Bug description:
In current neutron, when running "neutron router-gateway-set" with
specified router's "enable_snat" is false, then non-SNAT'ed packets
can arrive at other tenant via external-network. The packets don't
pass through other tenant's gateway, but take extra load to external
network.
The packet should be NAT'ed when flowing on external network. Non-
SNAT'ed packets don't need to flow on external network.
Therefore, non-SNAT'ed packets should be dropped at inside of own
tenant.
I will fix as follows:
* The router is Legacy mode and enable_snat is True:
No change from current implementation.
* The router is Legacy mode and enable_snat is False:
Add new rule for dropping outbound non-SNAT'ed packets.
* The router is DVR mode and enable_snat is True:
No change from current implementation.
* The router is Legacy mode and enable_snat is False:
Don't create SNAT name space.
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