openstack/tripleo-heat-templates
Code Issues Proposed changes

Add IPv6 disable option

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This will give user the ability to set these values,
if IPv6 is not to be used, it's recommended that it be
disabled to reduce the attack surface of the system.

Change-Id: Ib3142cce49b93a421ca142a59961ce49a77e66b1
Co-Authored-By: Luke Hinds <lhinds@redhat.com>
Signed-off-by: zshi <zshi@redhat.com>
This commit is contained in:
zshi 2017-04-06 18:11:26 +08:00
parent e10ddcc3d2
commit d22484d389
2 changed files with 15 additions and 0 deletions
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8
puppet/services/kernel.yaml
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@ -22,6 +22,10 @@ parameters:
default: 1048576
description: Configures sysctl kernel.pid_max key
type: number
KernelDisableIPv6:
default: 0
description: Configures sysctl net.ipv6.{default/all}.disable_ipv6 keys
type: number
outputs:
role_data:
@ -57,6 +61,10 @@ outputs:
value: 500000
net.netfilter.nf_conntrack_max:
value: 500000
net.ipv6.conf.default.disable_ipv6:
value: {get_param: KernelDisableIPv6}
net.ipv6.conf.all.disable_ipv6:
value: {get_param: KernelDisableIPv6}
# prevent neutron bridges from autoconfiguring ipv6 addresses
net.ipv6.conf.all.accept_ra:
value: 0

7
releasenotes/notes/add-ipv6-diable-options-9aaee219bb87ac6a.yaml Normal file
View File

@ -0,0 +1,7 @@
---
security:
- |
Add IPv6 disable option and make it configurable for user to disable IPv6
when it's not used, this will descrease the risk of ipv6 attack.
Both net.ipv6.conf.default.disable_ipv6 & net.ipv6.conf.all.disable_ipv6
will be explicitly set to the default value (0) which is enabled.