Currently any dhcp agent instance will work as an open resolver. For
deployments using publicly routed addresses for tenant networks, this
allows the agent being abused in dDoS attacks, see [1].
By setting the `--local-service` option dnsmasq will filter DNS queries
and reply only to queries from directly attached networks.
Reviewed: https:/ /review. openstack. org/633210 /git.openstack. org/cgit/ openstack/ neutron/ commit/ ?id=f599c15e33f 72d44a18f10cd71 a0fc9b13b35080
Committed: https:/
Submitter: Zuul
Branch: stable/queens
commit f599c15e33f72d4 4a18f10cd71a0fc 9b13b35080
Author: Jens Harbott <email address hidden>
Date: Mon Oct 29 17:08:33 2018 +0000
Secure dnsmasq process against external abuse
Currently any dhcp agent instance will work as an open resolver. For
deployments using publicly routed addresses for tenant networks, this
allows the agent being abused in dDoS attacks, see [1].
By setting the `--local-service` option dnsmasq will filter DNS queries
and reply only to queries from directly attached networks.
[1] https:/ /bugs.launchpad .net/neutron/ +bug/1501206
Conflicts:
neutron/ cmd/sanity_ check.py
Closes-Bug: 1501206 15a88bd79896301 2fa0efca74e cfb8327a86d7225 e2c3972263)
Change-Id: I76d810aad2ce0f
(cherry picked from commit 0fce3ca2c1641fb